OGLE-2019-BLG-0825 : constraints on the source system and effect on binary-lens parameters arising from a five-day xallarap effect in a candidate planetary microlensing event
We present an analysis of microlensing event OGLE-2019-BLG-0825. This event was identified as a planetary candidate by preliminary modeling. We find that significant residuals from the best-fit static binary-lens model exist and a xallarap effect can fit the residuals very well and significantly imp...
Ausführliche Beschreibung
Gespeichert in:
| Autor*in: |
Satoh, Yuki K. [verfasserIn] Koshimoto, Naoki [verfasserIn] Bennett, David P. [verfasserIn] Sumi, Takahiro [verfasserIn] Rattenbury, Nicholas James [verfasserIn] Suzuki, Daisuke [verfasserIn] Miyazaki, Shota [verfasserIn] Bond, Ian A. [verfasserIn] Udalski, Andrzej [verfasserIn] Gould, Andrew [verfasserIn] Bozza, Valerio [verfasserIn] Dominik, Martin [verfasserIn] Hirao, Yuki [verfasserIn] Kondo, Iona [verfasserIn] Kirikawa, Rintaro [verfasserIn] Hamada, Ryusei [verfasserIn] Hundertmark, Markus [verfasserIn] |
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| Format: |
E-Artikel |
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| Sprache: |
Englisch |
| Erschienen: |
2023 August 18 |
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| Anmerkung: |
Gesehen am 04.01.2024 The MOA Collaboration: Fumio Abe, Richard Barry, Aparna Bhattacharya [und 19 weitere Verfasser] ; The OGLE Collaboration: Przemek Mróz, Radosław Poleski , Jan Skowron [und 10 weitere Verfasser] ; The KMTNet Collaboration: Michael D. Albrow, Sun-Ju Chung, Cheongho Han [und 18 weitere Verfasser] ; The MiNDSTEp Collaboration: Uffe G. Jørgensen, Penélope Longa-Peña, Markus Hundertmark [und 14 weitere Verfasser] |
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| Umfang: |
Illustrationen 15 |
| Übergeordnetes Werk: |
Enthalten in: The astronomical journal - Washington, DC : AAS Publishing, American Astronomical Society, 1998, 166(2023), 3, Artikel-ID 116, Seite 1-15 |
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| Übergeordnetes Werk: |
volume:166 ; year:2023 ; number:3 ; elocationid:116 ; pages:1-15 ; extent:15 |
| Links: |
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| DOI / URN: |
10.3847/1538-3881/ace908 |
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| Katalog-ID: |
1877265144 |
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| 100 | 1 | |a Satoh, Yuki K. |e verfasserin |0 (DE-588)1315041014 |0 (DE-627)1877269689 |4 aut | |
| 245 | 1 | 0 | |a OGLE-2019-BLG-0825 |b constraints on the source system and effect on binary-lens parameters arising from a five-day xallarap effect in a candidate planetary microlensing event |c Yuki K. Satoh, Naoki Koshimoto, David P. Bennett, Takahiro Sumi, Nicholas J. Rattenbury, Daisuke Suzuki, Shota Miyazaki, Ian A. Bond, Andrzej Udalski, Andrew Gould, Valerio Bozza, Martin Dominik, Yuki Hirao, Iona Kondo, Rintaro Kirikawa, Ryusei Hamada, (leading authors), Fumio Abe [und 21 weitere] (the MOA Collaboration), Przemek Mróz [und 12 weitere] (the OGLE Collaboration), Michael D. Albrow [und 20 weitere] (the KMTNet Collaboration), and Uffe G. Jørgensen, Markus Hundertmark [und 15 weitere] (the MiNDSTEp Collaboration) |
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| 500 | |a The MOA Collaboration: Fumio Abe, Richard Barry, Aparna Bhattacharya [und 19 weitere Verfasser] ; The OGLE Collaboration: Przemek Mróz, Radosław Poleski , Jan Skowron [und 10 weitere Verfasser] ; The KMTNet Collaboration: Michael D. Albrow, Sun-Ju Chung, Cheongho Han [und 18 weitere Verfasser] ; The MiNDSTEp Collaboration: Uffe G. Jørgensen, Penélope Longa-Peña, Markus Hundertmark [und 14 weitere Verfasser] | ||
| 520 | |a We present an analysis of microlensing event OGLE-2019-BLG-0825. This event was identified as a planetary candidate by preliminary modeling. We find that significant residuals from the best-fit static binary-lens model exist and a xallarap effect can fit the residuals very well and significantly improves χ 2 values. On the other hand, by including the xallarap effect in our models, we find that binary-lens parameters such as mass ratio, q, and separation, s, cannot be constrained well. However, we also find that the parameters for the source system such as the orbital period and semimajor axis are consistent between all the models we analyzed. We therefore constrain the properties of the source system better than the properties of the lens system. The source system comprises a G-type main-sequence star orbited by a brown dwarf with a period of P ∼ 5 days. This analysis is the first to demonstrate that the xallarap effect does affect binary-lens parameters in planetary events. It would not be common for the presence or absence of the xallarap effect to affect lens parameters in events with long orbital periods of the source system or events with transits to caustics, but in other cases, such as this event, the xallarap effect can affect binary-lens parameters. | ||
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10.3847/1538-3881/ace908 doi (DE-627)1877265144 (DE-599)KXP1877265144 (OCoLC)1425207900 DE-627 ger DE-627 rda eng Satoh, Yuki K. verfasserin (DE-588)1315041014 (DE-627)1877269689 aut OGLE-2019-BLG-0825 constraints on the source system and effect on binary-lens parameters arising from a five-day xallarap effect in a candidate planetary microlensing event Yuki K. Satoh, Naoki Koshimoto, David P. Bennett, Takahiro Sumi, Nicholas J. Rattenbury, Daisuke Suzuki, Shota Miyazaki, Ian A. Bond, Andrzej Udalski, Andrew Gould, Valerio Bozza, Martin Dominik, Yuki Hirao, Iona Kondo, Rintaro Kirikawa, Ryusei Hamada, (leading authors), Fumio Abe [und 21 weitere] (the MOA Collaboration), Przemek Mróz [und 12 weitere] (the OGLE Collaboration), Michael D. Albrow [und 20 weitere] (the KMTNet Collaboration), and Uffe G. Jørgensen, Markus Hundertmark [und 15 weitere] (the MiNDSTEp Collaboration) 2023 August 18 Illustrationen 15 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Gesehen am 04.01.2024 The MOA Collaboration: Fumio Abe, Richard Barry, Aparna Bhattacharya [und 19 weitere Verfasser] ; The OGLE Collaboration: Przemek Mróz, Radosław Poleski , Jan Skowron [und 10 weitere Verfasser] ; The KMTNet Collaboration: Michael D. Albrow, Sun-Ju Chung, Cheongho Han [und 18 weitere Verfasser] ; The MiNDSTEp Collaboration: Uffe G. Jørgensen, Penélope Longa-Peña, Markus Hundertmark [und 14 weitere Verfasser] We present an analysis of microlensing event OGLE-2019-BLG-0825. This event was identified as a planetary candidate by preliminary modeling. We find that significant residuals from the best-fit static binary-lens model exist and a xallarap effect can fit the residuals very well and significantly improves χ 2 values. On the other hand, by including the xallarap effect in our models, we find that binary-lens parameters such as mass ratio, q, and separation, s, cannot be constrained well. However, we also find that the parameters for the source system such as the orbital period and semimajor axis are consistent between all the models we analyzed. We therefore constrain the properties of the source system better than the properties of the lens system. The source system comprises a G-type main-sequence star orbited by a brown dwarf with a period of P ∼ 5 days. This analysis is the first to demonstrate that the xallarap effect does affect binary-lens parameters in planetary events. It would not be common for the presence or absence of the xallarap effect to affect lens parameters in events with long orbital periods of the source system or events with transits to caustics, but in other cases, such as this event, the xallarap effect can affect binary-lens parameters. Koshimoto, Naoki verfasserin aut Bennett, David P. verfasserin (DE-588)1283262819 (DE-627)1839065133 aut Sumi, Takahiro verfasserin aut Rattenbury, Nicholas James verfasserin (DE-588)1186734590 (DE-627)1666002038 aut Suzuki, Daisuke verfasserin aut Miyazaki, Shota verfasserin (DE-588)1231401230 (DE-627)1754866190 aut Bond, Ian A. verfasserin aut Udalski, Andrzej verfasserin (DE-588)1179965736 (DE-627)1067576215 (DE-576)501321179 aut Gould, Andrew verfasserin (DE-588)1126124508 (DE-627)880786531 (DE-576)483741582 aut Bozza, Valerio verfasserin (DE-588)110303104X (DE-627)86063146X (DE-576)470429399 aut Dominik, Martin verfasserin (DE-588)1179717260 (DE-627)106741536X (DE-576)518283968 aut Hirao, Yuki verfasserin (DE-588)1223378772 (DE-627)1742702848 aut Kondo, Iona verfasserin (DE-588)124178955X (DE-627)1771726962 aut Kirikawa, Rintaro verfasserin aut Hamada, Ryusei verfasserin aut Hundertmark, Markus verfasserin (DE-588)1138794627 (DE-627)896371042 (DE-576)492681937 aut Enthalten in The astronomical journal Washington, DC : AAS Publishing, American Astronomical Society, 1998 166(2023), 3, Artikel-ID 116, Seite 1-15 (DE-627)312175647 (DE-600)2003104-X (DE-576)090883306 1538-3881 nnns volume:166 year:2023 number:3 elocationid:116 pages:1-15 extent:15 https://doi.org/10.3847/1538-3881/ace908 Verlag Resolving-System kostenfrei Volltext https://dx.doi.org/10.3847/1538-3881/ace908 Verlag kostenfrei Volltext GBV_USEFLAG_U GBV_ILN_2013 ISIL_DE-16-250 SYSFLAG_1 GBV_KXP GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_2006 GBV_ILN_2014 GBV_ILN_2088 GBV_ILN_2110 GBV_ILN_2129 GBV_ILN_2522 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 GBV_ILN_2403 GBV_ILN_2403 ISIL_DE-LFER AR 166 2023 3 116 1-15 15 2013 01 DE-16-250 4447474093 00 --%%-- --%%-- --%%-- --%%-- l01 04-01-24 2403 01 DE-LFER 4456222042 00 --%%-- --%%-- n --%%-- l01 12-01-24 2403 01 DE-LFER https://dx.doi.org/10.3847/1538-3881/ace908 2013 01 DE-16-250 00 s hd2023 2013 01 DE-16-250 01 s (DE-627)1410508463 wissenschaftlicher Artikel (Zeitschrift) 2013 01 DE-16-250 02 s per_89 2013 01 DE-16-250 03 s s_15 2013 01 DE-16-250 04 p (DE-627)1562690353 Hundertmark, Markus 2013 01 DE-16-250 04 k (DE-627)1416733728 ZAH Astronomisches Recheninstitut 2013 01 DE-16-250 04 s (DE-627)1410501914 Verfasser 2013 01 DE-16-250 04 s pos_84 |
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10.3847/1538-3881/ace908 doi (DE-627)1877265144 (DE-599)KXP1877265144 (OCoLC)1425207900 DE-627 ger DE-627 rda eng Satoh, Yuki K. verfasserin (DE-588)1315041014 (DE-627)1877269689 aut OGLE-2019-BLG-0825 constraints on the source system and effect on binary-lens parameters arising from a five-day xallarap effect in a candidate planetary microlensing event Yuki K. Satoh, Naoki Koshimoto, David P. Bennett, Takahiro Sumi, Nicholas J. Rattenbury, Daisuke Suzuki, Shota Miyazaki, Ian A. Bond, Andrzej Udalski, Andrew Gould, Valerio Bozza, Martin Dominik, Yuki Hirao, Iona Kondo, Rintaro Kirikawa, Ryusei Hamada, (leading authors), Fumio Abe [und 21 weitere] (the MOA Collaboration), Przemek Mróz [und 12 weitere] (the OGLE Collaboration), Michael D. Albrow [und 20 weitere] (the KMTNet Collaboration), and Uffe G. Jørgensen, Markus Hundertmark [und 15 weitere] (the MiNDSTEp Collaboration) 2023 August 18 Illustrationen 15 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Gesehen am 04.01.2024 The MOA Collaboration: Fumio Abe, Richard Barry, Aparna Bhattacharya [und 19 weitere Verfasser] ; The OGLE Collaboration: Przemek Mróz, Radosław Poleski , Jan Skowron [und 10 weitere Verfasser] ; The KMTNet Collaboration: Michael D. Albrow, Sun-Ju Chung, Cheongho Han [und 18 weitere Verfasser] ; The MiNDSTEp Collaboration: Uffe G. Jørgensen, Penélope Longa-Peña, Markus Hundertmark [und 14 weitere Verfasser] We present an analysis of microlensing event OGLE-2019-BLG-0825. This event was identified as a planetary candidate by preliminary modeling. We find that significant residuals from the best-fit static binary-lens model exist and a xallarap effect can fit the residuals very well and significantly improves χ 2 values. On the other hand, by including the xallarap effect in our models, we find that binary-lens parameters such as mass ratio, q, and separation, s, cannot be constrained well. However, we also find that the parameters for the source system such as the orbital period and semimajor axis are consistent between all the models we analyzed. We therefore constrain the properties of the source system better than the properties of the lens system. The source system comprises a G-type main-sequence star orbited by a brown dwarf with a period of P ∼ 5 days. This analysis is the first to demonstrate that the xallarap effect does affect binary-lens parameters in planetary events. It would not be common for the presence or absence of the xallarap effect to affect lens parameters in events with long orbital periods of the source system or events with transits to caustics, but in other cases, such as this event, the xallarap effect can affect binary-lens parameters. Koshimoto, Naoki verfasserin aut Bennett, David P. verfasserin (DE-588)1283262819 (DE-627)1839065133 aut Sumi, Takahiro verfasserin aut Rattenbury, Nicholas James verfasserin (DE-588)1186734590 (DE-627)1666002038 aut Suzuki, Daisuke verfasserin aut Miyazaki, Shota verfasserin (DE-588)1231401230 (DE-627)1754866190 aut Bond, Ian A. verfasserin aut Udalski, Andrzej verfasserin (DE-588)1179965736 (DE-627)1067576215 (DE-576)501321179 aut Gould, Andrew verfasserin (DE-588)1126124508 (DE-627)880786531 (DE-576)483741582 aut Bozza, Valerio verfasserin (DE-588)110303104X (DE-627)86063146X (DE-576)470429399 aut Dominik, Martin verfasserin (DE-588)1179717260 (DE-627)106741536X (DE-576)518283968 aut Hirao, Yuki verfasserin (DE-588)1223378772 (DE-627)1742702848 aut Kondo, Iona verfasserin (DE-588)124178955X (DE-627)1771726962 aut Kirikawa, Rintaro verfasserin aut Hamada, Ryusei verfasserin aut Hundertmark, Markus verfasserin (DE-588)1138794627 (DE-627)896371042 (DE-576)492681937 aut Enthalten in The astronomical journal Washington, DC : AAS Publishing, American Astronomical Society, 1998 166(2023), 3, Artikel-ID 116, Seite 1-15 (DE-627)312175647 (DE-600)2003104-X (DE-576)090883306 1538-3881 nnns volume:166 year:2023 number:3 elocationid:116 pages:1-15 extent:15 https://doi.org/10.3847/1538-3881/ace908 Verlag Resolving-System kostenfrei Volltext https://dx.doi.org/10.3847/1538-3881/ace908 Verlag kostenfrei Volltext GBV_USEFLAG_U GBV_ILN_2013 ISIL_DE-16-250 SYSFLAG_1 GBV_KXP GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_2006 GBV_ILN_2014 GBV_ILN_2088 GBV_ILN_2110 GBV_ILN_2129 GBV_ILN_2522 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 GBV_ILN_2403 GBV_ILN_2403 ISIL_DE-LFER AR 166 2023 3 116 1-15 15 2013 01 DE-16-250 4447474093 00 --%%-- --%%-- --%%-- --%%-- l01 04-01-24 2403 01 DE-LFER 4456222042 00 --%%-- --%%-- n --%%-- l01 12-01-24 2403 01 DE-LFER https://dx.doi.org/10.3847/1538-3881/ace908 2013 01 DE-16-250 00 s hd2023 2013 01 DE-16-250 01 s (DE-627)1410508463 wissenschaftlicher Artikel (Zeitschrift) 2013 01 DE-16-250 02 s per_89 2013 01 DE-16-250 03 s s_15 2013 01 DE-16-250 04 p (DE-627)1562690353 Hundertmark, Markus 2013 01 DE-16-250 04 k (DE-627)1416733728 ZAH Astronomisches Recheninstitut 2013 01 DE-16-250 04 s (DE-627)1410501914 Verfasser 2013 01 DE-16-250 04 s pos_84 |
| allfields_unstemmed |
10.3847/1538-3881/ace908 doi (DE-627)1877265144 (DE-599)KXP1877265144 (OCoLC)1425207900 DE-627 ger DE-627 rda eng Satoh, Yuki K. verfasserin (DE-588)1315041014 (DE-627)1877269689 aut OGLE-2019-BLG-0825 constraints on the source system and effect on binary-lens parameters arising from a five-day xallarap effect in a candidate planetary microlensing event Yuki K. Satoh, Naoki Koshimoto, David P. Bennett, Takahiro Sumi, Nicholas J. Rattenbury, Daisuke Suzuki, Shota Miyazaki, Ian A. Bond, Andrzej Udalski, Andrew Gould, Valerio Bozza, Martin Dominik, Yuki Hirao, Iona Kondo, Rintaro Kirikawa, Ryusei Hamada, (leading authors), Fumio Abe [und 21 weitere] (the MOA Collaboration), Przemek Mróz [und 12 weitere] (the OGLE Collaboration), Michael D. Albrow [und 20 weitere] (the KMTNet Collaboration), and Uffe G. Jørgensen, Markus Hundertmark [und 15 weitere] (the MiNDSTEp Collaboration) 2023 August 18 Illustrationen 15 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Gesehen am 04.01.2024 The MOA Collaboration: Fumio Abe, Richard Barry, Aparna Bhattacharya [und 19 weitere Verfasser] ; The OGLE Collaboration: Przemek Mróz, Radosław Poleski , Jan Skowron [und 10 weitere Verfasser] ; The KMTNet Collaboration: Michael D. Albrow, Sun-Ju Chung, Cheongho Han [und 18 weitere Verfasser] ; The MiNDSTEp Collaboration: Uffe G. Jørgensen, Penélope Longa-Peña, Markus Hundertmark [und 14 weitere Verfasser] We present an analysis of microlensing event OGLE-2019-BLG-0825. This event was identified as a planetary candidate by preliminary modeling. We find that significant residuals from the best-fit static binary-lens model exist and a xallarap effect can fit the residuals very well and significantly improves χ 2 values. On the other hand, by including the xallarap effect in our models, we find that binary-lens parameters such as mass ratio, q, and separation, s, cannot be constrained well. However, we also find that the parameters for the source system such as the orbital period and semimajor axis are consistent between all the models we analyzed. We therefore constrain the properties of the source system better than the properties of the lens system. The source system comprises a G-type main-sequence star orbited by a brown dwarf with a period of P ∼ 5 days. This analysis is the first to demonstrate that the xallarap effect does affect binary-lens parameters in planetary events. It would not be common for the presence or absence of the xallarap effect to affect lens parameters in events with long orbital periods of the source system or events with transits to caustics, but in other cases, such as this event, the xallarap effect can affect binary-lens parameters. Koshimoto, Naoki verfasserin aut Bennett, David P. verfasserin (DE-588)1283262819 (DE-627)1839065133 aut Sumi, Takahiro verfasserin aut Rattenbury, Nicholas James verfasserin (DE-588)1186734590 (DE-627)1666002038 aut Suzuki, Daisuke verfasserin aut Miyazaki, Shota verfasserin (DE-588)1231401230 (DE-627)1754866190 aut Bond, Ian A. verfasserin aut Udalski, Andrzej verfasserin (DE-588)1179965736 (DE-627)1067576215 (DE-576)501321179 aut Gould, Andrew verfasserin (DE-588)1126124508 (DE-627)880786531 (DE-576)483741582 aut Bozza, Valerio verfasserin (DE-588)110303104X (DE-627)86063146X (DE-576)470429399 aut Dominik, Martin verfasserin (DE-588)1179717260 (DE-627)106741536X (DE-576)518283968 aut Hirao, Yuki verfasserin (DE-588)1223378772 (DE-627)1742702848 aut Kondo, Iona verfasserin (DE-588)124178955X (DE-627)1771726962 aut Kirikawa, Rintaro verfasserin aut Hamada, Ryusei verfasserin aut Hundertmark, Markus verfasserin (DE-588)1138794627 (DE-627)896371042 (DE-576)492681937 aut Enthalten in The astronomical journal Washington, DC : AAS Publishing, American Astronomical Society, 1998 166(2023), 3, Artikel-ID 116, Seite 1-15 (DE-627)312175647 (DE-600)2003104-X (DE-576)090883306 1538-3881 nnns volume:166 year:2023 number:3 elocationid:116 pages:1-15 extent:15 https://doi.org/10.3847/1538-3881/ace908 Verlag Resolving-System kostenfrei Volltext https://dx.doi.org/10.3847/1538-3881/ace908 Verlag kostenfrei Volltext GBV_USEFLAG_U GBV_ILN_2013 ISIL_DE-16-250 SYSFLAG_1 GBV_KXP GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_2006 GBV_ILN_2014 GBV_ILN_2088 GBV_ILN_2110 GBV_ILN_2129 GBV_ILN_2522 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 GBV_ILN_2403 GBV_ILN_2403 ISIL_DE-LFER AR 166 2023 3 116 1-15 15 2013 01 DE-16-250 4447474093 00 --%%-- --%%-- --%%-- --%%-- l01 04-01-24 2403 01 DE-LFER 4456222042 00 --%%-- --%%-- n --%%-- l01 12-01-24 2403 01 DE-LFER https://dx.doi.org/10.3847/1538-3881/ace908 2013 01 DE-16-250 00 s hd2023 2013 01 DE-16-250 01 s (DE-627)1410508463 wissenschaftlicher Artikel (Zeitschrift) 2013 01 DE-16-250 02 s per_89 2013 01 DE-16-250 03 s s_15 2013 01 DE-16-250 04 p (DE-627)1562690353 Hundertmark, Markus 2013 01 DE-16-250 04 k (DE-627)1416733728 ZAH Astronomisches Recheninstitut 2013 01 DE-16-250 04 s (DE-627)1410501914 Verfasser 2013 01 DE-16-250 04 s pos_84 |
| allfieldsGer |
10.3847/1538-3881/ace908 doi (DE-627)1877265144 (DE-599)KXP1877265144 (OCoLC)1425207900 DE-627 ger DE-627 rda eng Satoh, Yuki K. verfasserin (DE-588)1315041014 (DE-627)1877269689 aut OGLE-2019-BLG-0825 constraints on the source system and effect on binary-lens parameters arising from a five-day xallarap effect in a candidate planetary microlensing event Yuki K. Satoh, Naoki Koshimoto, David P. Bennett, Takahiro Sumi, Nicholas J. Rattenbury, Daisuke Suzuki, Shota Miyazaki, Ian A. Bond, Andrzej Udalski, Andrew Gould, Valerio Bozza, Martin Dominik, Yuki Hirao, Iona Kondo, Rintaro Kirikawa, Ryusei Hamada, (leading authors), Fumio Abe [und 21 weitere] (the MOA Collaboration), Przemek Mróz [und 12 weitere] (the OGLE Collaboration), Michael D. Albrow [und 20 weitere] (the KMTNet Collaboration), and Uffe G. Jørgensen, Markus Hundertmark [und 15 weitere] (the MiNDSTEp Collaboration) 2023 August 18 Illustrationen 15 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Gesehen am 04.01.2024 The MOA Collaboration: Fumio Abe, Richard Barry, Aparna Bhattacharya [und 19 weitere Verfasser] ; The OGLE Collaboration: Przemek Mróz, Radosław Poleski , Jan Skowron [und 10 weitere Verfasser] ; The KMTNet Collaboration: Michael D. Albrow, Sun-Ju Chung, Cheongho Han [und 18 weitere Verfasser] ; The MiNDSTEp Collaboration: Uffe G. Jørgensen, Penélope Longa-Peña, Markus Hundertmark [und 14 weitere Verfasser] We present an analysis of microlensing event OGLE-2019-BLG-0825. This event was identified as a planetary candidate by preliminary modeling. We find that significant residuals from the best-fit static binary-lens model exist and a xallarap effect can fit the residuals very well and significantly improves χ 2 values. On the other hand, by including the xallarap effect in our models, we find that binary-lens parameters such as mass ratio, q, and separation, s, cannot be constrained well. However, we also find that the parameters for the source system such as the orbital period and semimajor axis are consistent between all the models we analyzed. We therefore constrain the properties of the source system better than the properties of the lens system. The source system comprises a G-type main-sequence star orbited by a brown dwarf with a period of P ∼ 5 days. This analysis is the first to demonstrate that the xallarap effect does affect binary-lens parameters in planetary events. It would not be common for the presence or absence of the xallarap effect to affect lens parameters in events with long orbital periods of the source system or events with transits to caustics, but in other cases, such as this event, the xallarap effect can affect binary-lens parameters. Koshimoto, Naoki verfasserin aut Bennett, David P. verfasserin (DE-588)1283262819 (DE-627)1839065133 aut Sumi, Takahiro verfasserin aut Rattenbury, Nicholas James verfasserin (DE-588)1186734590 (DE-627)1666002038 aut Suzuki, Daisuke verfasserin aut Miyazaki, Shota verfasserin (DE-588)1231401230 (DE-627)1754866190 aut Bond, Ian A. verfasserin aut Udalski, Andrzej verfasserin (DE-588)1179965736 (DE-627)1067576215 (DE-576)501321179 aut Gould, Andrew verfasserin (DE-588)1126124508 (DE-627)880786531 (DE-576)483741582 aut Bozza, Valerio verfasserin (DE-588)110303104X (DE-627)86063146X (DE-576)470429399 aut Dominik, Martin verfasserin (DE-588)1179717260 (DE-627)106741536X (DE-576)518283968 aut Hirao, Yuki verfasserin (DE-588)1223378772 (DE-627)1742702848 aut Kondo, Iona verfasserin (DE-588)124178955X (DE-627)1771726962 aut Kirikawa, Rintaro verfasserin aut Hamada, Ryusei verfasserin aut Hundertmark, Markus verfasserin (DE-588)1138794627 (DE-627)896371042 (DE-576)492681937 aut Enthalten in The astronomical journal Washington, DC : AAS Publishing, American Astronomical Society, 1998 166(2023), 3, Artikel-ID 116, Seite 1-15 (DE-627)312175647 (DE-600)2003104-X (DE-576)090883306 1538-3881 nnns volume:166 year:2023 number:3 elocationid:116 pages:1-15 extent:15 https://doi.org/10.3847/1538-3881/ace908 Verlag Resolving-System kostenfrei Volltext https://dx.doi.org/10.3847/1538-3881/ace908 Verlag kostenfrei Volltext GBV_USEFLAG_U GBV_ILN_2013 ISIL_DE-16-250 SYSFLAG_1 GBV_KXP GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_2006 GBV_ILN_2014 GBV_ILN_2088 GBV_ILN_2110 GBV_ILN_2129 GBV_ILN_2522 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 GBV_ILN_2403 GBV_ILN_2403 ISIL_DE-LFER AR 166 2023 3 116 1-15 15 2013 01 DE-16-250 4447474093 00 --%%-- --%%-- --%%-- --%%-- l01 04-01-24 2403 01 DE-LFER 4456222042 00 --%%-- --%%-- n --%%-- l01 12-01-24 2403 01 DE-LFER https://dx.doi.org/10.3847/1538-3881/ace908 2013 01 DE-16-250 00 s hd2023 2013 01 DE-16-250 01 s (DE-627)1410508463 wissenschaftlicher Artikel (Zeitschrift) 2013 01 DE-16-250 02 s per_89 2013 01 DE-16-250 03 s s_15 2013 01 DE-16-250 04 p (DE-627)1562690353 Hundertmark, Markus 2013 01 DE-16-250 04 k (DE-627)1416733728 ZAH Astronomisches Recheninstitut 2013 01 DE-16-250 04 s (DE-627)1410501914 Verfasser 2013 01 DE-16-250 04 s pos_84 |
| allfieldsSound |
10.3847/1538-3881/ace908 doi (DE-627)1877265144 (DE-599)KXP1877265144 (OCoLC)1425207900 DE-627 ger DE-627 rda eng Satoh, Yuki K. verfasserin (DE-588)1315041014 (DE-627)1877269689 aut OGLE-2019-BLG-0825 constraints on the source system and effect on binary-lens parameters arising from a five-day xallarap effect in a candidate planetary microlensing event Yuki K. Satoh, Naoki Koshimoto, David P. Bennett, Takahiro Sumi, Nicholas J. Rattenbury, Daisuke Suzuki, Shota Miyazaki, Ian A. Bond, Andrzej Udalski, Andrew Gould, Valerio Bozza, Martin Dominik, Yuki Hirao, Iona Kondo, Rintaro Kirikawa, Ryusei Hamada, (leading authors), Fumio Abe [und 21 weitere] (the MOA Collaboration), Przemek Mróz [und 12 weitere] (the OGLE Collaboration), Michael D. Albrow [und 20 weitere] (the KMTNet Collaboration), and Uffe G. Jørgensen, Markus Hundertmark [und 15 weitere] (the MiNDSTEp Collaboration) 2023 August 18 Illustrationen 15 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Gesehen am 04.01.2024 The MOA Collaboration: Fumio Abe, Richard Barry, Aparna Bhattacharya [und 19 weitere Verfasser] ; The OGLE Collaboration: Przemek Mróz, Radosław Poleski , Jan Skowron [und 10 weitere Verfasser] ; The KMTNet Collaboration: Michael D. Albrow, Sun-Ju Chung, Cheongho Han [und 18 weitere Verfasser] ; The MiNDSTEp Collaboration: Uffe G. Jørgensen, Penélope Longa-Peña, Markus Hundertmark [und 14 weitere Verfasser] We present an analysis of microlensing event OGLE-2019-BLG-0825. This event was identified as a planetary candidate by preliminary modeling. We find that significant residuals from the best-fit static binary-lens model exist and a xallarap effect can fit the residuals very well and significantly improves χ 2 values. On the other hand, by including the xallarap effect in our models, we find that binary-lens parameters such as mass ratio, q, and separation, s, cannot be constrained well. However, we also find that the parameters for the source system such as the orbital period and semimajor axis are consistent between all the models we analyzed. We therefore constrain the properties of the source system better than the properties of the lens system. The source system comprises a G-type main-sequence star orbited by a brown dwarf with a period of P ∼ 5 days. This analysis is the first to demonstrate that the xallarap effect does affect binary-lens parameters in planetary events. It would not be common for the presence or absence of the xallarap effect to affect lens parameters in events with long orbital periods of the source system or events with transits to caustics, but in other cases, such as this event, the xallarap effect can affect binary-lens parameters. Koshimoto, Naoki verfasserin aut Bennett, David P. verfasserin (DE-588)1283262819 (DE-627)1839065133 aut Sumi, Takahiro verfasserin aut Rattenbury, Nicholas James verfasserin (DE-588)1186734590 (DE-627)1666002038 aut Suzuki, Daisuke verfasserin aut Miyazaki, Shota verfasserin (DE-588)1231401230 (DE-627)1754866190 aut Bond, Ian A. verfasserin aut Udalski, Andrzej verfasserin (DE-588)1179965736 (DE-627)1067576215 (DE-576)501321179 aut Gould, Andrew verfasserin (DE-588)1126124508 (DE-627)880786531 (DE-576)483741582 aut Bozza, Valerio verfasserin (DE-588)110303104X (DE-627)86063146X (DE-576)470429399 aut Dominik, Martin verfasserin (DE-588)1179717260 (DE-627)106741536X (DE-576)518283968 aut Hirao, Yuki verfasserin (DE-588)1223378772 (DE-627)1742702848 aut Kondo, Iona verfasserin (DE-588)124178955X (DE-627)1771726962 aut Kirikawa, Rintaro verfasserin aut Hamada, Ryusei verfasserin aut Hundertmark, Markus verfasserin (DE-588)1138794627 (DE-627)896371042 (DE-576)492681937 aut Enthalten in The astronomical journal Washington, DC : AAS Publishing, American Astronomical Society, 1998 166(2023), 3, Artikel-ID 116, Seite 1-15 (DE-627)312175647 (DE-600)2003104-X (DE-576)090883306 1538-3881 nnns volume:166 year:2023 number:3 elocationid:116 pages:1-15 extent:15 https://doi.org/10.3847/1538-3881/ace908 Verlag Resolving-System kostenfrei Volltext https://dx.doi.org/10.3847/1538-3881/ace908 Verlag kostenfrei Volltext GBV_USEFLAG_U GBV_ILN_2013 ISIL_DE-16-250 SYSFLAG_1 GBV_KXP GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_2006 GBV_ILN_2014 GBV_ILN_2088 GBV_ILN_2110 GBV_ILN_2129 GBV_ILN_2522 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 GBV_ILN_2403 GBV_ILN_2403 ISIL_DE-LFER AR 166 2023 3 116 1-15 15 2013 01 DE-16-250 4447474093 00 --%%-- --%%-- --%%-- --%%-- l01 04-01-24 2403 01 DE-LFER 4456222042 00 --%%-- --%%-- n --%%-- l01 12-01-24 2403 01 DE-LFER https://dx.doi.org/10.3847/1538-3881/ace908 2013 01 DE-16-250 00 s hd2023 2013 01 DE-16-250 01 s (DE-627)1410508463 wissenschaftlicher Artikel (Zeitschrift) 2013 01 DE-16-250 02 s per_89 2013 01 DE-16-250 03 s s_15 2013 01 DE-16-250 04 p (DE-627)1562690353 Hundertmark, Markus 2013 01 DE-16-250 04 k (DE-627)1416733728 ZAH Astronomisches Recheninstitut 2013 01 DE-16-250 04 s (DE-627)1410501914 Verfasser 2013 01 DE-16-250 04 s pos_84 |
| language |
English |
| source |
Enthalten in The astronomical journal 166(2023), 3, Artikel-ID 116, Seite 1-15 volume:166 year:2023 number:3 elocationid:116 pages:1-15 extent:15 |
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Enthalten in The astronomical journal 166(2023), 3, Artikel-ID 116, Seite 1-15 volume:166 year:2023 number:3 elocationid:116 pages:1-15 extent:15 |
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Article |
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2013:0 2403:0 |
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findex.gbv.de |
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2013@01 2403@01 |
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2013:hd2023 DE-16-250:hd2023 2013:wissenschaftlicher Artikel (Zeitschrift) DE-16-250:wissenschaftlicher Artikel (Zeitschrift) 2013:per_89 DE-16-250:per_89 2013:s_15 DE-16-250:s_15 2013:Hundertmark, Markus DE-16-250:Hundertmark, Markus 2013:ZAH Astronomisches Recheninstitut DE-16-250:ZAH Astronomisches Recheninstitut 2013:Verfasser DE-16-250:Verfasser 2013:pos_84 DE-16-250:pos_84 |
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The astronomical journal |
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Satoh, Yuki K. @@aut@@ Koshimoto, Naoki @@aut@@ Bennett, David P. @@aut@@ Sumi, Takahiro @@aut@@ Rattenbury, Nicholas James @@aut@@ Suzuki, Daisuke @@aut@@ Miyazaki, Shota @@aut@@ Bond, Ian A. @@aut@@ Udalski, Andrzej @@aut@@ Gould, Andrew @@aut@@ Bozza, Valerio @@aut@@ Dominik, Martin @@aut@@ Hirao, Yuki @@aut@@ Kondo, Iona @@aut@@ Kirikawa, Rintaro @@aut@@ Hamada, Ryusei @@aut@@ Hundertmark, Markus @@aut@@ |
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2023-01-01T00:00:00Z |
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englisch |
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Satoh, Naoki Koshimoto, David P. Bennett, Takahiro Sumi, Nicholas J. Rattenbury, Daisuke Suzuki, Shota Miyazaki, Ian A. Bond, Andrzej Udalski, Andrew Gould, Valerio Bozza, Martin Dominik, Yuki Hirao, Iona Kondo, Rintaro Kirikawa, Ryusei Hamada, (leading authors), Fumio Abe [und 21 weitere] (the MOA Collaboration), Przemek Mróz [und 12 weitere] (the OGLE Collaboration), Michael D. Albrow [und 20 weitere] (the KMTNet Collaboration), and Uffe G. Jørgensen, Markus Hundertmark [und 15 weitere] (the MiNDSTEp Collaboration)</subfield></datafield><datafield tag="264" ind1=" " ind2="1"><subfield code="c">2023 August 18</subfield></datafield><datafield tag="300" ind1=" " ind2=" "><subfield code="b">Illustrationen</subfield></datafield><datafield tag="300" ind1=" " ind2=" "><subfield code="a">15</subfield></datafield><datafield tag="336" ind1=" " ind2=" "><subfield code="a">Text</subfield><subfield code="b">txt</subfield><subfield code="2">rdacontent</subfield></datafield><datafield tag="337" ind1=" " ind2=" "><subfield code="a">Computermedien</subfield><subfield code="b">c</subfield><subfield code="2">rdamedia</subfield></datafield><datafield tag="338" ind1=" " ind2=" "><subfield code="a">Online-Ressource</subfield><subfield code="b">cr</subfield><subfield code="2">rdacarrier</subfield></datafield><datafield tag="500" ind1=" " ind2=" "><subfield code="a">Gesehen am 04.01.2024</subfield></datafield><datafield tag="500" ind1=" " ind2=" "><subfield code="a">The MOA Collaboration: Fumio Abe, Richard Barry, Aparna Bhattacharya [und 19 weitere Verfasser] ; The OGLE Collaboration: Przemek Mróz, Radosław Poleski , Jan Skowron [und 10 weitere Verfasser] ; The KMTNet Collaboration: Michael D. Albrow, Sun-Ju Chung, Cheongho Han [und 18 weitere Verfasser] ; The MiNDSTEp Collaboration: Uffe G. Jørgensen, Penélope Longa-Peña, Markus Hundertmark [und 14 weitere Verfasser]</subfield></datafield><datafield tag="520" ind1=" " ind2=" "><subfield code="a">We present an analysis of microlensing event OGLE-2019-BLG-0825. This event was identified as a planetary candidate by preliminary modeling. We find that significant residuals from the best-fit static binary-lens model exist and a xallarap effect can fit the residuals very well and significantly improves χ 2 values. On the other hand, by including the xallarap effect in our models, we find that binary-lens parameters such as mass ratio, q, and separation, s, cannot be constrained well. However, we also find that the parameters for the source system such as the orbital period and semimajor axis are consistent between all the models we analyzed. We therefore constrain the properties of the source system better than the properties of the lens system. The source system comprises a G-type main-sequence star orbited by a brown dwarf with a period of P ∼ 5 days. This analysis is the first to demonstrate that the xallarap effect does affect binary-lens parameters in planetary events. 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OGLE-2019-BLG-0825 constraints on the source system and effect on binary-lens parameters arising from a five-day xallarap effect in a candidate planetary microlensing event |
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OGLE-2019-BLG-0825 constraints on the source system and effect on binary-lens parameters arising from a five-day xallarap effect in a candidate planetary microlensing event Yuki K. Satoh, Naoki Koshimoto, David P. Bennett, Takahiro Sumi, Nicholas J. Rattenbury, Daisuke Suzuki, Shota Miyazaki, Ian A. Bond, Andrzej Udalski, Andrew Gould, Valerio Bozza, Martin Dominik, Yuki Hirao, Iona Kondo, Rintaro Kirikawa, Ryusei Hamada, (leading authors), Fumio Abe [und 21 weitere] (the MOA Collaboration), Przemek Mróz [und 12 weitere] (the OGLE Collaboration), Michael D. Albrow [und 20 weitere] (the KMTNet Collaboration), and Uffe G. Jørgensen, Markus Hundertmark [und 15 weitere] (the MiNDSTEp Collaboration) |
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constraints on the source system and effect on binary-lens parameters arising from a five-day xallarap effect in a candidate planetary microlensing event |
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ogle-2019-blg-0825constraints on the source system and effect on binary-lens parameters arising from a five-day xallarap effect in a candidate planetary microlensing event |
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OGLE-2019-BLG-0825 constraints on the source system and effect on binary-lens parameters arising from a five-day xallarap effect in a candidate planetary microlensing event |
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We present an analysis of microlensing event OGLE-2019-BLG-0825. This event was identified as a planetary candidate by preliminary modeling. We find that significant residuals from the best-fit static binary-lens model exist and a xallarap effect can fit the residuals very well and significantly improves χ 2 values. On the other hand, by including the xallarap effect in our models, we find that binary-lens parameters such as mass ratio, q, and separation, s, cannot be constrained well. However, we also find that the parameters for the source system such as the orbital period and semimajor axis are consistent between all the models we analyzed. We therefore constrain the properties of the source system better than the properties of the lens system. The source system comprises a G-type main-sequence star orbited by a brown dwarf with a period of P ∼ 5 days. This analysis is the first to demonstrate that the xallarap effect does affect binary-lens parameters in planetary events. It would not be common for the presence or absence of the xallarap effect to affect lens parameters in events with long orbital periods of the source system or events with transits to caustics, but in other cases, such as this event, the xallarap effect can affect binary-lens parameters. Gesehen am 04.01.2024 The MOA Collaboration: Fumio Abe, Richard Barry, Aparna Bhattacharya [und 19 weitere Verfasser] ; The OGLE Collaboration: Przemek Mróz, Radosław Poleski , Jan Skowron [und 10 weitere Verfasser] ; The KMTNet Collaboration: Michael D. Albrow, Sun-Ju Chung, Cheongho Han [und 18 weitere Verfasser] ; The MiNDSTEp Collaboration: Uffe G. Jørgensen, Penélope Longa-Peña, Markus Hundertmark [und 14 weitere Verfasser] |
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We present an analysis of microlensing event OGLE-2019-BLG-0825. This event was identified as a planetary candidate by preliminary modeling. We find that significant residuals from the best-fit static binary-lens model exist and a xallarap effect can fit the residuals very well and significantly improves χ 2 values. On the other hand, by including the xallarap effect in our models, we find that binary-lens parameters such as mass ratio, q, and separation, s, cannot be constrained well. However, we also find that the parameters for the source system such as the orbital period and semimajor axis are consistent between all the models we analyzed. We therefore constrain the properties of the source system better than the properties of the lens system. The source system comprises a G-type main-sequence star orbited by a brown dwarf with a period of P ∼ 5 days. This analysis is the first to demonstrate that the xallarap effect does affect binary-lens parameters in planetary events. It would not be common for the presence or absence of the xallarap effect to affect lens parameters in events with long orbital periods of the source system or events with transits to caustics, but in other cases, such as this event, the xallarap effect can affect binary-lens parameters. Gesehen am 04.01.2024 The MOA Collaboration: Fumio Abe, Richard Barry, Aparna Bhattacharya [und 19 weitere Verfasser] ; The OGLE Collaboration: Przemek Mróz, Radosław Poleski , Jan Skowron [und 10 weitere Verfasser] ; The KMTNet Collaboration: Michael D. Albrow, Sun-Ju Chung, Cheongho Han [und 18 weitere Verfasser] ; The MiNDSTEp Collaboration: Uffe G. Jørgensen, Penélope Longa-Peña, Markus Hundertmark [und 14 weitere Verfasser] |
| abstract_unstemmed |
We present an analysis of microlensing event OGLE-2019-BLG-0825. This event was identified as a planetary candidate by preliminary modeling. We find that significant residuals from the best-fit static binary-lens model exist and a xallarap effect can fit the residuals very well and significantly improves χ 2 values. On the other hand, by including the xallarap effect in our models, we find that binary-lens parameters such as mass ratio, q, and separation, s, cannot be constrained well. However, we also find that the parameters for the source system such as the orbital period and semimajor axis are consistent between all the models we analyzed. We therefore constrain the properties of the source system better than the properties of the lens system. The source system comprises a G-type main-sequence star orbited by a brown dwarf with a period of P ∼ 5 days. This analysis is the first to demonstrate that the xallarap effect does affect binary-lens parameters in planetary events. It would not be common for the presence or absence of the xallarap effect to affect lens parameters in events with long orbital periods of the source system or events with transits to caustics, but in other cases, such as this event, the xallarap effect can affect binary-lens parameters. Gesehen am 04.01.2024 The MOA Collaboration: Fumio Abe, Richard Barry, Aparna Bhattacharya [und 19 weitere Verfasser] ; The OGLE Collaboration: Przemek Mróz, Radosław Poleski , Jan Skowron [und 10 weitere Verfasser] ; The KMTNet Collaboration: Michael D. Albrow, Sun-Ju Chung, Cheongho Han [und 18 weitere Verfasser] ; The MiNDSTEp Collaboration: Uffe G. Jørgensen, Penélope Longa-Peña, Markus Hundertmark [und 14 weitere Verfasser] |
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