Identification of Blue Horizontal-branch Stars from LAMOST DR5
We construct a new catalog of the blue horizontal-branch (BHB) stars from the Large Sky Area Multi-Object Fiber Spectroscopic Telescope (LAMOST) DR5 data set, which contains 5355 + 81 BHB stars at high Galactic latitude (∣Glat∣ < 20°). We combine the spectral line indices with a set of Balmer lin...
Ausführliche Beschreibung
Autor*in: |
Jie Ju [verfasserIn] Wenyuan Cui [verfasserIn] Zhenyan Huo [verfasserIn] Chao Liu [verfasserIn] Xiangxiang Xue [verfasserIn] Jiaming Liu [verfasserIn] Shuai Feng [verfasserIn] Mingxu Sun [verfasserIn] Linlin Li [verfasserIn] |
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Format: |
E-Artikel |
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Sprache: |
Englisch |
Erschienen: |
2023 |
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Schlagwörter: |
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Übergeordnetes Werk: |
In: The Astrophysical Journal Supplement Series - IOP Publishing, 2022, 270(2023), 1, p 11 |
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Übergeordnetes Werk: |
volume:270 ; year:2023 ; number:1, p 11 |
Links: |
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DOI / URN: |
10.3847/1538-4365/ad0df9 |
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Katalog-ID: |
DOAJ097995592 |
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10.3847/1538-4365/ad0df9 doi (DE-627)DOAJ097995592 (DE-599)DOAJ170f37719ec94442a58bc2ba80e2a1f9 DE-627 ger DE-627 rakwb eng QB460-466 Jie Ju verfasserin aut Identification of Blue Horizontal-branch Stars from LAMOST DR5 2023 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier We construct a new catalog of the blue horizontal-branch (BHB) stars from the Large Sky Area Multi-Object Fiber Spectroscopic Telescope (LAMOST) DR5 data set, which contains 5355 + 81 BHB stars at high Galactic latitude (∣Glat∣ < 20°). We combine the spectral line indices with a set of Balmer line profile selection criteria to identify the BHB stars. During the selection process, we use the line index of Ca ii K to exclude the metal-rich A-type dwarfs. We obtain their atmospheric parameters by crossmatching our BHB stars with the catalog provided by Xiang et al. The results show that our sample is consistent with the theoretical T _eff –log g evolutionary tracks of the BHB stars, indicating that our method is robust for identifying BHB stars from the LAMOST spectra. Their spatial distribution indicates that most of our BHB stars are located in the inner halo or the disk of the Milky Way. Combined with other BHB samples from the literature, the BHB stars can cover a large Galactic volume, which makes them a better probe for studying the kinematics, dynamics, and structural characteristics of the Milky Way. Horizontal branch stars Astrophysics Wenyuan Cui verfasserin aut Zhenyan Huo verfasserin aut Chao Liu verfasserin aut Xiangxiang Xue verfasserin aut Jiaming Liu verfasserin aut Shuai Feng verfasserin aut Mingxu Sun verfasserin aut Linlin Li verfasserin aut In The Astrophysical Journal Supplement Series IOP Publishing, 2022 270(2023), 1, p 11 (DE-627)312200196 (DE-600)2006860-8 15384365 nnns volume:270 year:2023 number:1, p 11 https://doi.org/10.3847/1538-4365/ad0df9 kostenfrei https://doaj.org/article/170f37719ec94442a58bc2ba80e2a1f9 kostenfrei https://doi.org/10.3847/1538-4365/ad0df9 kostenfrei https://doaj.org/toc/0067-0049 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ 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_702 GBV_ILN_2001 GBV_ILN_2014 GBV_ILN_2088 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 AR 270 2023 1, p 11 |
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10.3847/1538-4365/ad0df9 doi (DE-627)DOAJ097995592 (DE-599)DOAJ170f37719ec94442a58bc2ba80e2a1f9 DE-627 ger DE-627 rakwb eng QB460-466 Jie Ju verfasserin aut Identification of Blue Horizontal-branch Stars from LAMOST DR5 2023 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier We construct a new catalog of the blue horizontal-branch (BHB) stars from the Large Sky Area Multi-Object Fiber Spectroscopic Telescope (LAMOST) DR5 data set, which contains 5355 + 81 BHB stars at high Galactic latitude (∣Glat∣ < 20°). We combine the spectral line indices with a set of Balmer line profile selection criteria to identify the BHB stars. During the selection process, we use the line index of Ca ii K to exclude the metal-rich A-type dwarfs. We obtain their atmospheric parameters by crossmatching our BHB stars with the catalog provided by Xiang et al. The results show that our sample is consistent with the theoretical T _eff –log g evolutionary tracks of the BHB stars, indicating that our method is robust for identifying BHB stars from the LAMOST spectra. Their spatial distribution indicates that most of our BHB stars are located in the inner halo or the disk of the Milky Way. Combined with other BHB samples from the literature, the BHB stars can cover a large Galactic volume, which makes them a better probe for studying the kinematics, dynamics, and structural characteristics of the Milky Way. Horizontal branch stars Astrophysics Wenyuan Cui verfasserin aut Zhenyan Huo verfasserin aut Chao Liu verfasserin aut Xiangxiang Xue verfasserin aut Jiaming Liu verfasserin aut Shuai Feng verfasserin aut Mingxu Sun verfasserin aut Linlin Li verfasserin aut In The Astrophysical Journal Supplement Series IOP Publishing, 2022 270(2023), 1, p 11 (DE-627)312200196 (DE-600)2006860-8 15384365 nnns volume:270 year:2023 number:1, p 11 https://doi.org/10.3847/1538-4365/ad0df9 kostenfrei https://doaj.org/article/170f37719ec94442a58bc2ba80e2a1f9 kostenfrei https://doi.org/10.3847/1538-4365/ad0df9 kostenfrei https://doaj.org/toc/0067-0049 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ 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_702 GBV_ILN_2001 GBV_ILN_2014 GBV_ILN_2088 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 AR 270 2023 1, p 11 |
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10.3847/1538-4365/ad0df9 doi (DE-627)DOAJ097995592 (DE-599)DOAJ170f37719ec94442a58bc2ba80e2a1f9 DE-627 ger DE-627 rakwb eng QB460-466 Jie Ju verfasserin aut Identification of Blue Horizontal-branch Stars from LAMOST DR5 2023 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier We construct a new catalog of the blue horizontal-branch (BHB) stars from the Large Sky Area Multi-Object Fiber Spectroscopic Telescope (LAMOST) DR5 data set, which contains 5355 + 81 BHB stars at high Galactic latitude (∣Glat∣ < 20°). We combine the spectral line indices with a set of Balmer line profile selection criteria to identify the BHB stars. During the selection process, we use the line index of Ca ii K to exclude the metal-rich A-type dwarfs. We obtain their atmospheric parameters by crossmatching our BHB stars with the catalog provided by Xiang et al. The results show that our sample is consistent with the theoretical T _eff –log g evolutionary tracks of the BHB stars, indicating that our method is robust for identifying BHB stars from the LAMOST spectra. Their spatial distribution indicates that most of our BHB stars are located in the inner halo or the disk of the Milky Way. Combined with other BHB samples from the literature, the BHB stars can cover a large Galactic volume, which makes them a better probe for studying the kinematics, dynamics, and structural characteristics of the Milky Way. Horizontal branch stars Astrophysics Wenyuan Cui verfasserin aut Zhenyan Huo verfasserin aut Chao Liu verfasserin aut Xiangxiang Xue verfasserin aut Jiaming Liu verfasserin aut Shuai Feng verfasserin aut Mingxu Sun verfasserin aut Linlin Li verfasserin aut In The Astrophysical Journal Supplement Series IOP Publishing, 2022 270(2023), 1, p 11 (DE-627)312200196 (DE-600)2006860-8 15384365 nnns volume:270 year:2023 number:1, p 11 https://doi.org/10.3847/1538-4365/ad0df9 kostenfrei https://doaj.org/article/170f37719ec94442a58bc2ba80e2a1f9 kostenfrei https://doi.org/10.3847/1538-4365/ad0df9 kostenfrei https://doaj.org/toc/0067-0049 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ 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_702 GBV_ILN_2001 GBV_ILN_2014 GBV_ILN_2088 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 AR 270 2023 1, p 11 |
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10.3847/1538-4365/ad0df9 doi (DE-627)DOAJ097995592 (DE-599)DOAJ170f37719ec94442a58bc2ba80e2a1f9 DE-627 ger DE-627 rakwb eng QB460-466 Jie Ju verfasserin aut Identification of Blue Horizontal-branch Stars from LAMOST DR5 2023 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier We construct a new catalog of the blue horizontal-branch (BHB) stars from the Large Sky Area Multi-Object Fiber Spectroscopic Telescope (LAMOST) DR5 data set, which contains 5355 + 81 BHB stars at high Galactic latitude (∣Glat∣ < 20°). We combine the spectral line indices with a set of Balmer line profile selection criteria to identify the BHB stars. During the selection process, we use the line index of Ca ii K to exclude the metal-rich A-type dwarfs. We obtain their atmospheric parameters by crossmatching our BHB stars with the catalog provided by Xiang et al. The results show that our sample is consistent with the theoretical T _eff –log g evolutionary tracks of the BHB stars, indicating that our method is robust for identifying BHB stars from the LAMOST spectra. Their spatial distribution indicates that most of our BHB stars are located in the inner halo or the disk of the Milky Way. Combined with other BHB samples from the literature, the BHB stars can cover a large Galactic volume, which makes them a better probe for studying the kinematics, dynamics, and structural characteristics of the Milky Way. Horizontal branch stars Astrophysics Wenyuan Cui verfasserin aut Zhenyan Huo verfasserin aut Chao Liu verfasserin aut Xiangxiang Xue verfasserin aut Jiaming Liu verfasserin aut Shuai Feng verfasserin aut Mingxu Sun verfasserin aut Linlin Li verfasserin aut In The Astrophysical Journal Supplement Series IOP Publishing, 2022 270(2023), 1, p 11 (DE-627)312200196 (DE-600)2006860-8 15384365 nnns volume:270 year:2023 number:1, p 11 https://doi.org/10.3847/1538-4365/ad0df9 kostenfrei https://doaj.org/article/170f37719ec94442a58bc2ba80e2a1f9 kostenfrei https://doi.org/10.3847/1538-4365/ad0df9 kostenfrei https://doaj.org/toc/0067-0049 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ 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_702 GBV_ILN_2001 GBV_ILN_2014 GBV_ILN_2088 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 AR 270 2023 1, p 11 |
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10.3847/1538-4365/ad0df9 doi (DE-627)DOAJ097995592 (DE-599)DOAJ170f37719ec94442a58bc2ba80e2a1f9 DE-627 ger DE-627 rakwb eng QB460-466 Jie Ju verfasserin aut Identification of Blue Horizontal-branch Stars from LAMOST DR5 2023 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier We construct a new catalog of the blue horizontal-branch (BHB) stars from the Large Sky Area Multi-Object Fiber Spectroscopic Telescope (LAMOST) DR5 data set, which contains 5355 + 81 BHB stars at high Galactic latitude (∣Glat∣ < 20°). We combine the spectral line indices with a set of Balmer line profile selection criteria to identify the BHB stars. During the selection process, we use the line index of Ca ii K to exclude the metal-rich A-type dwarfs. We obtain their atmospheric parameters by crossmatching our BHB stars with the catalog provided by Xiang et al. The results show that our sample is consistent with the theoretical T _eff –log g evolutionary tracks of the BHB stars, indicating that our method is robust for identifying BHB stars from the LAMOST spectra. Their spatial distribution indicates that most of our BHB stars are located in the inner halo or the disk of the Milky Way. Combined with other BHB samples from the literature, the BHB stars can cover a large Galactic volume, which makes them a better probe for studying the kinematics, dynamics, and structural characteristics of the Milky Way. Horizontal branch stars Astrophysics Wenyuan Cui verfasserin aut Zhenyan Huo verfasserin aut Chao Liu verfasserin aut Xiangxiang Xue verfasserin aut Jiaming Liu verfasserin aut Shuai Feng verfasserin aut Mingxu Sun verfasserin aut Linlin Li verfasserin aut In The Astrophysical Journal Supplement Series IOP Publishing, 2022 270(2023), 1, p 11 (DE-627)312200196 (DE-600)2006860-8 15384365 nnns volume:270 year:2023 number:1, p 11 https://doi.org/10.3847/1538-4365/ad0df9 kostenfrei https://doaj.org/article/170f37719ec94442a58bc2ba80e2a1f9 kostenfrei https://doi.org/10.3847/1538-4365/ad0df9 kostenfrei https://doaj.org/toc/0067-0049 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ 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_702 GBV_ILN_2001 GBV_ILN_2014 GBV_ILN_2088 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 AR 270 2023 1, p 11 |
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Identification of Blue Horizontal-branch Stars from LAMOST DR5 |
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We construct a new catalog of the blue horizontal-branch (BHB) stars from the Large Sky Area Multi-Object Fiber Spectroscopic Telescope (LAMOST) DR5 data set, which contains 5355 + 81 BHB stars at high Galactic latitude (∣Glat∣ < 20°). We combine the spectral line indices with a set of Balmer line profile selection criteria to identify the BHB stars. During the selection process, we use the line index of Ca ii K to exclude the metal-rich A-type dwarfs. We obtain their atmospheric parameters by crossmatching our BHB stars with the catalog provided by Xiang et al. The results show that our sample is consistent with the theoretical T _eff –log g evolutionary tracks of the BHB stars, indicating that our method is robust for identifying BHB stars from the LAMOST spectra. Their spatial distribution indicates that most of our BHB stars are located in the inner halo or the disk of the Milky Way. Combined with other BHB samples from the literature, the BHB stars can cover a large Galactic volume, which makes them a better probe for studying the kinematics, dynamics, and structural characteristics of the Milky Way. |
abstractGer |
We construct a new catalog of the blue horizontal-branch (BHB) stars from the Large Sky Area Multi-Object Fiber Spectroscopic Telescope (LAMOST) DR5 data set, which contains 5355 + 81 BHB stars at high Galactic latitude (∣Glat∣ < 20°). We combine the spectral line indices with a set of Balmer line profile selection criteria to identify the BHB stars. During the selection process, we use the line index of Ca ii K to exclude the metal-rich A-type dwarfs. We obtain their atmospheric parameters by crossmatching our BHB stars with the catalog provided by Xiang et al. The results show that our sample is consistent with the theoretical T _eff –log g evolutionary tracks of the BHB stars, indicating that our method is robust for identifying BHB stars from the LAMOST spectra. Their spatial distribution indicates that most of our BHB stars are located in the inner halo or the disk of the Milky Way. Combined with other BHB samples from the literature, the BHB stars can cover a large Galactic volume, which makes them a better probe for studying the kinematics, dynamics, and structural characteristics of the Milky Way. |
abstract_unstemmed |
We construct a new catalog of the blue horizontal-branch (BHB) stars from the Large Sky Area Multi-Object Fiber Spectroscopic Telescope (LAMOST) DR5 data set, which contains 5355 + 81 BHB stars at high Galactic latitude (∣Glat∣ < 20°). We combine the spectral line indices with a set of Balmer line profile selection criteria to identify the BHB stars. During the selection process, we use the line index of Ca ii K to exclude the metal-rich A-type dwarfs. We obtain their atmospheric parameters by crossmatching our BHB stars with the catalog provided by Xiang et al. The results show that our sample is consistent with the theoretical T _eff –log g evolutionary tracks of the BHB stars, indicating that our method is robust for identifying BHB stars from the LAMOST spectra. Their spatial distribution indicates that most of our BHB stars are located in the inner halo or the disk of the Milky Way. Combined with other BHB samples from the literature, the BHB stars can cover a large Galactic volume, which makes them a better probe for studying the kinematics, dynamics, and structural characteristics of the Milky Way. |
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Identification of Blue Horizontal-branch Stars from LAMOST DR5 |
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