Redder than Red: Discovery of an Exceptionally Red L/T Transition Dwarf

We present the discovery of CWISE J050626.96+073842.4 (CWISE J0506+0738), an L/T transition dwarf with extremely red near-infrared colors discovered through the Backyard Worlds: Planet 9 citizen science project. Photometry from UKIRT and CatWISE give a ( J − K ) _MKO color of 2.97 ± 0.03 mag and a J...
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Autor*in:	Adam C. Schneider [verfasserIn] Adam J. Burgasser [verfasserIn] Justice Bruursema [verfasserIn] Jeffrey A. Munn [verfasserIn] Frederick J. Vrba [verfasserIn] Dan Caselden [verfasserIn] Martin Kabatnik [verfasserIn] Austin Rothermich [verfasserIn] Arttu Sainio [verfasserIn] Thomas P. Bickle [verfasserIn] Scott E. Dahm [verfasserIn] Aaron M. Meisner [verfasserIn] J. Davy Kirkpatrick [verfasserIn] Genaro Suárez [verfasserIn] Jonathan Gagné [verfasserIn] Jacqueline K. Faherty [verfasserIn] Johanna M. Vos [verfasserIn] Marc J. Kuchner [verfasserIn] Stephen J. Williams [verfasserIn] Daniella Bardalez Gagliuffi [verfasserIn] Christian Aganze [verfasserIn] Chih-Chun Hsu [verfasserIn] Christopher Theissen [verfasserIn] Michael C. Cushing [verfasserIn] Federico Marocco [verfasserIn] Sarah Casewell [verfasserIn] The Backyard Worlds: Planet 9 Collaboration [verfasserIn]

Format:	E-Artikel
Sprache:	Englisch

Erschienen:	2023

Schlagwörter:	Brown dwarfs L dwarfs T dwarfs

Übergeordnetes Werk:	In: The Astrophysical Journal Letters - IOP Publishing, 2022, 943(2023), 2, p L16
Übergeordnetes Werk:	volume:943 ; year:2023 ; number:2, p L16

Links:	Link aufrufen Link aufrufen Link aufrufen Journal toc

DOI / URN:	10.3847/2041-8213/acb0cd

Katalog-ID:	DOAJ089156692

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520			\|a We present the discovery of CWISE J050626.96+073842.4 (CWISE J0506+0738), an L/T transition dwarf with extremely red near-infrared colors discovered through the Backyard Worlds: Planet 9 citizen science project. Photometry from UKIRT and CatWISE give a ( J − K ) _MKO color of 2.97 ± 0.03 mag and a J _MKO − W2 color of 4.93 ± 0.02 mag, making CWISE J0506+0738 the reddest known free-floating L/T dwarf in both colors. We confirm the extremely red nature of CWISE J0506+0738 using Keck/NIRES near-infrared spectroscopy and establish that it is a low-gravity, late-type L/T transition dwarf. The spectrum of CWISE J0506+0738 shows possible signatures of CH _4 absorption in its atmosphere, suggesting a colder effective temperature than other known, young, red L dwarfs. We assign a preliminary spectral type for this source of L8 γ –T0 γ . We tentatively find that CWISE J0506+0738 is variable at 3–5 μ m based on multiepoch WISE photometry. Proper motions derived from follow-up UKIRT observations combined with a radial velocity from our Keck/NIRES spectrum and a photometric distance estimate indicate a strong membership probability in the β Pic moving group. A future parallax measurement will help to establish a more definitive moving group membership for this unusual object.
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allfields	10.3847/2041-8213/acb0cd doi (DE-627)DOAJ089156692 (DE-599)DOAJ32c925b93a444637813f9fe405d28b9c DE-627 ger DE-627 rakwb eng QB460-466 Adam C. Schneider verfasserin aut Redder than Red: Discovery of an Exceptionally Red L/T Transition Dwarf 2023 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier We present the discovery of CWISE J050626.96+073842.4 (CWISE J0506+0738), an L/T transition dwarf with extremely red near-infrared colors discovered through the Backyard Worlds: Planet 9 citizen science project. Photometry from UKIRT and CatWISE give a ( J − K ) _MKO color of 2.97 ± 0.03 mag and a J _MKO − W2 color of 4.93 ± 0.02 mag, making CWISE J0506+0738 the reddest known free-floating L/T dwarf in both colors. We confirm the extremely red nature of CWISE J0506+0738 using Keck/NIRES near-infrared spectroscopy and establish that it is a low-gravity, late-type L/T transition dwarf. The spectrum of CWISE J0506+0738 shows possible signatures of CH _4 absorption in its atmosphere, suggesting a colder effective temperature than other known, young, red L dwarfs. We assign a preliminary spectral type for this source of L8 γ –T0 γ . We tentatively find that CWISE J0506+0738 is variable at 3–5 μ m based on multiepoch WISE photometry. Proper motions derived from follow-up UKIRT observations combined with a radial velocity from our Keck/NIRES spectrum and a photometric distance estimate indicate a strong membership probability in the β Pic moving group. A future parallax measurement will help to establish a more definitive moving group membership for this unusual object. Brown dwarfs L dwarfs T dwarfs Astrophysics Adam J. Burgasser verfasserin aut Justice Bruursema verfasserin aut Jeffrey A. Munn verfasserin aut Frederick J. Vrba verfasserin aut Dan Caselden verfasserin aut Martin Kabatnik verfasserin aut Austin Rothermich verfasserin aut Arttu Sainio verfasserin aut Thomas P. Bickle verfasserin aut Scott E. Dahm verfasserin aut Aaron M. Meisner verfasserin aut J. Davy Kirkpatrick verfasserin aut Genaro Suárez verfasserin aut Jonathan Gagné verfasserin aut Jacqueline K. Faherty verfasserin aut Johanna M. Vos verfasserin aut Marc J. Kuchner verfasserin aut Stephen J. Williams verfasserin aut Daniella Bardalez Gagliuffi verfasserin aut Christian Aganze verfasserin aut Chih-Chun Hsu verfasserin aut Christopher Theissen verfasserin aut Michael C. Cushing verfasserin aut Federico Marocco verfasserin aut Sarah Casewell verfasserin aut The Backyard Worlds: Planet 9 Collaboration verfasserin aut In The Astrophysical Journal Letters IOP Publishing, 2022 943(2023), 2, p L16 (DE-627)312189028 (DE-600)2006858-X 20418213 nnns volume:943 year:2023 number:2, p L16 https://doi.org/10.3847/2041-8213/acb0cd kostenfrei https://doaj.org/article/32c925b93a444637813f9fe405d28b9c kostenfrei https://doi.org/10.3847/2041-8213/acb0cd kostenfrei https://doaj.org/toc/2041-8205 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_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 943 2023 2, p L16
spelling	10.3847/2041-8213/acb0cd doi (DE-627)DOAJ089156692 (DE-599)DOAJ32c925b93a444637813f9fe405d28b9c DE-627 ger DE-627 rakwb eng QB460-466 Adam C. Schneider verfasserin aut Redder than Red: Discovery of an Exceptionally Red L/T Transition Dwarf 2023 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier We present the discovery of CWISE J050626.96+073842.4 (CWISE J0506+0738), an L/T transition dwarf with extremely red near-infrared colors discovered through the Backyard Worlds: Planet 9 citizen science project. Photometry from UKIRT and CatWISE give a ( J − K ) _MKO color of 2.97 ± 0.03 mag and a J _MKO − W2 color of 4.93 ± 0.02 mag, making CWISE J0506+0738 the reddest known free-floating L/T dwarf in both colors. We confirm the extremely red nature of CWISE J0506+0738 using Keck/NIRES near-infrared spectroscopy and establish that it is a low-gravity, late-type L/T transition dwarf. The spectrum of CWISE J0506+0738 shows possible signatures of CH _4 absorption in its atmosphere, suggesting a colder effective temperature than other known, young, red L dwarfs. We assign a preliminary spectral type for this source of L8 γ –T0 γ . We tentatively find that CWISE J0506+0738 is variable at 3–5 μ m based on multiepoch WISE photometry. Proper motions derived from follow-up UKIRT observations combined with a radial velocity from our Keck/NIRES spectrum and a photometric distance estimate indicate a strong membership probability in the β Pic moving group. A future parallax measurement will help to establish a more definitive moving group membership for this unusual object. Brown dwarfs L dwarfs T dwarfs Astrophysics Adam J. Burgasser verfasserin aut Justice Bruursema verfasserin aut Jeffrey A. Munn verfasserin aut Frederick J. Vrba verfasserin aut Dan Caselden verfasserin aut Martin Kabatnik verfasserin aut Austin Rothermich verfasserin aut Arttu Sainio verfasserin aut Thomas P. Bickle verfasserin aut Scott E. Dahm verfasserin aut Aaron M. Meisner verfasserin aut J. Davy Kirkpatrick verfasserin aut Genaro Suárez verfasserin aut Jonathan Gagné verfasserin aut Jacqueline K. Faherty verfasserin aut Johanna M. Vos verfasserin aut Marc J. Kuchner verfasserin aut Stephen J. Williams verfasserin aut Daniella Bardalez Gagliuffi verfasserin aut Christian Aganze verfasserin aut Chih-Chun Hsu verfasserin aut Christopher Theissen verfasserin aut Michael C. Cushing verfasserin aut Federico Marocco verfasserin aut Sarah Casewell verfasserin aut The Backyard Worlds: Planet 9 Collaboration verfasserin aut In The Astrophysical Journal Letters IOP Publishing, 2022 943(2023), 2, p L16 (DE-627)312189028 (DE-600)2006858-X 20418213 nnns volume:943 year:2023 number:2, p L16 https://doi.org/10.3847/2041-8213/acb0cd kostenfrei https://doaj.org/article/32c925b93a444637813f9fe405d28b9c kostenfrei https://doi.org/10.3847/2041-8213/acb0cd kostenfrei https://doaj.org/toc/2041-8205 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_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 943 2023 2, p L16
allfields_unstemmed	10.3847/2041-8213/acb0cd doi (DE-627)DOAJ089156692 (DE-599)DOAJ32c925b93a444637813f9fe405d28b9c DE-627 ger DE-627 rakwb eng QB460-466 Adam C. Schneider verfasserin aut Redder than Red: Discovery of an Exceptionally Red L/T Transition Dwarf 2023 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier We present the discovery of CWISE J050626.96+073842.4 (CWISE J0506+0738), an L/T transition dwarf with extremely red near-infrared colors discovered through the Backyard Worlds: Planet 9 citizen science project. Photometry from UKIRT and CatWISE give a ( J − K ) _MKO color of 2.97 ± 0.03 mag and a J _MKO − W2 color of 4.93 ± 0.02 mag, making CWISE J0506+0738 the reddest known free-floating L/T dwarf in both colors. We confirm the extremely red nature of CWISE J0506+0738 using Keck/NIRES near-infrared spectroscopy and establish that it is a low-gravity, late-type L/T transition dwarf. The spectrum of CWISE J0506+0738 shows possible signatures of CH _4 absorption in its atmosphere, suggesting a colder effective temperature than other known, young, red L dwarfs. We assign a preliminary spectral type for this source of L8 γ –T0 γ . We tentatively find that CWISE J0506+0738 is variable at 3–5 μ m based on multiepoch WISE photometry. Proper motions derived from follow-up UKIRT observations combined with a radial velocity from our Keck/NIRES spectrum and a photometric distance estimate indicate a strong membership probability in the β Pic moving group. A future parallax measurement will help to establish a more definitive moving group membership for this unusual object. Brown dwarfs L dwarfs T dwarfs Astrophysics Adam J. Burgasser verfasserin aut Justice Bruursema verfasserin aut Jeffrey A. Munn verfasserin aut Frederick J. Vrba verfasserin aut Dan Caselden verfasserin aut Martin Kabatnik verfasserin aut Austin Rothermich verfasserin aut Arttu Sainio verfasserin aut Thomas P. Bickle verfasserin aut Scott E. Dahm verfasserin aut Aaron M. Meisner verfasserin aut J. Davy Kirkpatrick verfasserin aut Genaro Suárez verfasserin aut Jonathan Gagné verfasserin aut Jacqueline K. Faherty verfasserin aut Johanna M. Vos verfasserin aut Marc J. Kuchner verfasserin aut Stephen J. Williams verfasserin aut Daniella Bardalez Gagliuffi verfasserin aut Christian Aganze verfasserin aut Chih-Chun Hsu verfasserin aut Christopher Theissen verfasserin aut Michael C. Cushing verfasserin aut Federico Marocco verfasserin aut Sarah Casewell verfasserin aut The Backyard Worlds: Planet 9 Collaboration verfasserin aut In The Astrophysical Journal Letters IOP Publishing, 2022 943(2023), 2, p L16 (DE-627)312189028 (DE-600)2006858-X 20418213 nnns volume:943 year:2023 number:2, p L16 https://doi.org/10.3847/2041-8213/acb0cd kostenfrei https://doaj.org/article/32c925b93a444637813f9fe405d28b9c kostenfrei https://doi.org/10.3847/2041-8213/acb0cd kostenfrei https://doaj.org/toc/2041-8205 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_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 943 2023 2, p L16
allfieldsGer	10.3847/2041-8213/acb0cd doi (DE-627)DOAJ089156692 (DE-599)DOAJ32c925b93a444637813f9fe405d28b9c DE-627 ger DE-627 rakwb eng QB460-466 Adam C. Schneider verfasserin aut Redder than Red: Discovery of an Exceptionally Red L/T Transition Dwarf 2023 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier We present the discovery of CWISE J050626.96+073842.4 (CWISE J0506+0738), an L/T transition dwarf with extremely red near-infrared colors discovered through the Backyard Worlds: Planet 9 citizen science project. Photometry from UKIRT and CatWISE give a ( J − K ) _MKO color of 2.97 ± 0.03 mag and a J _MKO − W2 color of 4.93 ± 0.02 mag, making CWISE J0506+0738 the reddest known free-floating L/T dwarf in both colors. We confirm the extremely red nature of CWISE J0506+0738 using Keck/NIRES near-infrared spectroscopy and establish that it is a low-gravity, late-type L/T transition dwarf. The spectrum of CWISE J0506+0738 shows possible signatures of CH _4 absorption in its atmosphere, suggesting a colder effective temperature than other known, young, red L dwarfs. We assign a preliminary spectral type for this source of L8 γ –T0 γ . We tentatively find that CWISE J0506+0738 is variable at 3–5 μ m based on multiepoch WISE photometry. Proper motions derived from follow-up UKIRT observations combined with a radial velocity from our Keck/NIRES spectrum and a photometric distance estimate indicate a strong membership probability in the β Pic moving group. A future parallax measurement will help to establish a more definitive moving group membership for this unusual object. Brown dwarfs L dwarfs T dwarfs Astrophysics Adam J. Burgasser verfasserin aut Justice Bruursema verfasserin aut Jeffrey A. Munn verfasserin aut Frederick J. Vrba verfasserin aut Dan Caselden verfasserin aut Martin Kabatnik verfasserin aut Austin Rothermich verfasserin aut Arttu Sainio verfasserin aut Thomas P. Bickle verfasserin aut Scott E. Dahm verfasserin aut Aaron M. Meisner verfasserin aut J. Davy Kirkpatrick verfasserin aut Genaro Suárez verfasserin aut Jonathan Gagné verfasserin aut Jacqueline K. Faherty verfasserin aut Johanna M. Vos verfasserin aut Marc J. Kuchner verfasserin aut Stephen J. Williams verfasserin aut Daniella Bardalez Gagliuffi verfasserin aut Christian Aganze verfasserin aut Chih-Chun Hsu verfasserin aut Christopher Theissen verfasserin aut Michael C. Cushing verfasserin aut Federico Marocco verfasserin aut Sarah Casewell verfasserin aut The Backyard Worlds: Planet 9 Collaboration verfasserin aut In The Astrophysical Journal Letters IOP Publishing, 2022 943(2023), 2, p L16 (DE-627)312189028 (DE-600)2006858-X 20418213 nnns volume:943 year:2023 number:2, p L16 https://doi.org/10.3847/2041-8213/acb0cd kostenfrei https://doaj.org/article/32c925b93a444637813f9fe405d28b9c kostenfrei https://doi.org/10.3847/2041-8213/acb0cd kostenfrei https://doaj.org/toc/2041-8205 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_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 943 2023 2, p L16
allfieldsSound	10.3847/2041-8213/acb0cd doi (DE-627)DOAJ089156692 (DE-599)DOAJ32c925b93a444637813f9fe405d28b9c DE-627 ger DE-627 rakwb eng QB460-466 Adam C. Schneider verfasserin aut Redder than Red: Discovery of an Exceptionally Red L/T Transition Dwarf 2023 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier We present the discovery of CWISE J050626.96+073842.4 (CWISE J0506+0738), an L/T transition dwarf with extremely red near-infrared colors discovered through the Backyard Worlds: Planet 9 citizen science project. Photometry from UKIRT and CatWISE give a ( J − K ) _MKO color of 2.97 ± 0.03 mag and a J _MKO − W2 color of 4.93 ± 0.02 mag, making CWISE J0506+0738 the reddest known free-floating L/T dwarf in both colors. We confirm the extremely red nature of CWISE J0506+0738 using Keck/NIRES near-infrared spectroscopy and establish that it is a low-gravity, late-type L/T transition dwarf. The spectrum of CWISE J0506+0738 shows possible signatures of CH _4 absorption in its atmosphere, suggesting a colder effective temperature than other known, young, red L dwarfs. We assign a preliminary spectral type for this source of L8 γ –T0 γ . We tentatively find that CWISE J0506+0738 is variable at 3–5 μ m based on multiepoch WISE photometry. Proper motions derived from follow-up UKIRT observations combined with a radial velocity from our Keck/NIRES spectrum and a photometric distance estimate indicate a strong membership probability in the β Pic moving group. A future parallax measurement will help to establish a more definitive moving group membership for this unusual object. Brown dwarfs L dwarfs T dwarfs Astrophysics Adam J. Burgasser verfasserin aut Justice Bruursema verfasserin aut Jeffrey A. Munn verfasserin aut Frederick J. Vrba verfasserin aut Dan Caselden verfasserin aut Martin Kabatnik verfasserin aut Austin Rothermich verfasserin aut Arttu Sainio verfasserin aut Thomas P. Bickle verfasserin aut Scott E. Dahm verfasserin aut Aaron M. Meisner verfasserin aut J. Davy Kirkpatrick verfasserin aut Genaro Suárez verfasserin aut Jonathan Gagné verfasserin aut Jacqueline K. Faherty verfasserin aut Johanna M. Vos verfasserin aut Marc J. Kuchner verfasserin aut Stephen J. Williams verfasserin aut Daniella Bardalez Gagliuffi verfasserin aut Christian Aganze verfasserin aut Chih-Chun Hsu verfasserin aut Christopher Theissen verfasserin aut Michael C. Cushing verfasserin aut Federico Marocco verfasserin aut Sarah Casewell verfasserin aut The Backyard Worlds: Planet 9 Collaboration verfasserin aut In The Astrophysical Journal Letters IOP Publishing, 2022 943(2023), 2, p L16 (DE-627)312189028 (DE-600)2006858-X 20418213 nnns volume:943 year:2023 number:2, p L16 https://doi.org/10.3847/2041-8213/acb0cd kostenfrei https://doaj.org/article/32c925b93a444637813f9fe405d28b9c kostenfrei https://doi.org/10.3847/2041-8213/acb0cd kostenfrei https://doaj.org/toc/2041-8205 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_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 943 2023 2, p L16
language	English
source	In The Astrophysical Journal Letters 943(2023), 2, p L16 volume:943 year:2023 number:2, p L16
sourceStr	In The Astrophysical Journal Letters 943(2023), 2, p L16 volume:943 year:2023 number:2, p L16
format_phy_str_mv	Article
institution	findex.gbv.de
topic_facet	Brown dwarfs L dwarfs T dwarfs Astrophysics
isfreeaccess_bool	true
container_title	The Astrophysical Journal Letters
authorswithroles_txt_mv	Adam C. Schneider @@aut@@ Adam J. Burgasser @@aut@@ Justice Bruursema @@aut@@ Jeffrey A. Munn @@aut@@ Frederick J. Vrba @@aut@@ Dan Caselden @@aut@@ Martin Kabatnik @@aut@@ Austin Rothermich @@aut@@ Arttu Sainio @@aut@@ Thomas P. Bickle @@aut@@ Scott E. Dahm @@aut@@ Aaron M. Meisner @@aut@@ J. Davy Kirkpatrick @@aut@@ Genaro Suárez @@aut@@ Jonathan Gagné @@aut@@ Jacqueline K. Faherty @@aut@@ Johanna M. Vos @@aut@@ Marc J. Kuchner @@aut@@ Stephen J. Williams @@aut@@ Daniella Bardalez Gagliuffi @@aut@@ Christian Aganze @@aut@@ Chih-Chun Hsu @@aut@@ Christopher Theissen @@aut@@ Michael C. Cushing @@aut@@ Federico Marocco @@aut@@ Sarah Casewell @@aut@@ The Backyard Worlds: Planet 9 Collaboration @@aut@@
publishDateDaySort_date	2023-01-01T00:00:00Z
hierarchy_top_id	312189028
id	DOAJ089156692
language_de	englisch
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Schneider</subfield><subfield code="e">verfasserin</subfield><subfield code="4">aut</subfield></datafield><datafield tag="245" ind1="1" ind2="0"><subfield code="a">Redder than Red: Discovery of an Exceptionally Red L/T Transition Dwarf</subfield></datafield><datafield tag="264" ind1=" " ind2="1"><subfield code="c">2023</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="520" ind1=" " ind2=" "><subfield code="a">We present the discovery of CWISE J050626.96+073842.4 (CWISE J0506+0738), an L/T transition dwarf with extremely red near-infrared colors discovered through the Backyard Worlds: Planet 9 citizen science project. Photometry from UKIRT and CatWISE give a ( J − K ) _MKO color of 2.97 ± 0.03 mag and a J _MKO − W2 color of 4.93 ± 0.02 mag, making CWISE J0506+0738 the reddest known free-floating L/T dwarf in both colors. We confirm the extremely red nature of CWISE J0506+0738 using Keck/NIRES near-infrared spectroscopy and establish that it is a low-gravity, late-type L/T transition dwarf. The spectrum of CWISE J0506+0738 shows possible signatures of CH _4 absorption in its atmosphere, suggesting a colder effective temperature than other known, young, red L dwarfs. We assign a preliminary spectral type for this source of L8 γ –T0 γ . We tentatively find that CWISE J0506+0738 is variable at 3–5 μ m based on multiepoch WISE photometry. Proper motions derived from follow-up UKIRT observations combined with a radial velocity from our Keck/NIRES spectrum and a photometric distance estimate indicate a strong membership probability in the β Pic moving group. 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callnumber-first	Q - Science
author	Adam C. Schneider
spellingShingle	Adam C. Schneider misc QB460-466 misc Brown dwarfs misc L dwarfs misc T dwarfs misc Astrophysics Redder than Red: Discovery of an Exceptionally Red L/T Transition Dwarf
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topic_title	QB460-466 Redder than Red: Discovery of an Exceptionally Red L/T Transition Dwarf Brown dwarfs L dwarfs T dwarfs
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title	Redder than Red: Discovery of an Exceptionally Red L/T Transition Dwarf
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title_full	Redder than Red: Discovery of an Exceptionally Red L/T Transition Dwarf
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author_browse	Adam C. Schneider Adam J. Burgasser Justice Bruursema Jeffrey A. Munn Frederick J. Vrba Dan Caselden Martin Kabatnik Austin Rothermich Arttu Sainio Thomas P. Bickle Scott E. Dahm Aaron M. Meisner J. Davy Kirkpatrick Genaro Suárez Jonathan Gagné Jacqueline K. Faherty Johanna M. Vos Marc J. Kuchner Stephen J. Williams Daniella Bardalez Gagliuffi Christian Aganze Chih-Chun Hsu Christopher Theissen Michael C. Cushing Federico Marocco Sarah Casewell The Backyard Worlds: Planet 9 Collaboration
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title_sort	redder than red: discovery of an exceptionally red l/t transition dwarf
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title_auth	Redder than Red: Discovery of an Exceptionally Red L/T Transition Dwarf
abstract	We present the discovery of CWISE J050626.96+073842.4 (CWISE J0506+0738), an L/T transition dwarf with extremely red near-infrared colors discovered through the Backyard Worlds: Planet 9 citizen science project. Photometry from UKIRT and CatWISE give a ( J − K ) _MKO color of 2.97 ± 0.03 mag and a J _MKO − W2 color of 4.93 ± 0.02 mag, making CWISE J0506+0738 the reddest known free-floating L/T dwarf in both colors. We confirm the extremely red nature of CWISE J0506+0738 using Keck/NIRES near-infrared spectroscopy and establish that it is a low-gravity, late-type L/T transition dwarf. The spectrum of CWISE J0506+0738 shows possible signatures of CH _4 absorption in its atmosphere, suggesting a colder effective temperature than other known, young, red L dwarfs. We assign a preliminary spectral type for this source of L8 γ –T0 γ . We tentatively find that CWISE J0506+0738 is variable at 3–5 μ m based on multiepoch WISE photometry. Proper motions derived from follow-up UKIRT observations combined with a radial velocity from our Keck/NIRES spectrum and a photometric distance estimate indicate a strong membership probability in the β Pic moving group. A future parallax measurement will help to establish a more definitive moving group membership for this unusual object.
abstractGer	We present the discovery of CWISE J050626.96+073842.4 (CWISE J0506+0738), an L/T transition dwarf with extremely red near-infrared colors discovered through the Backyard Worlds: Planet 9 citizen science project. Photometry from UKIRT and CatWISE give a ( J − K ) _MKO color of 2.97 ± 0.03 mag and a J _MKO − W2 color of 4.93 ± 0.02 mag, making CWISE J0506+0738 the reddest known free-floating L/T dwarf in both colors. We confirm the extremely red nature of CWISE J0506+0738 using Keck/NIRES near-infrared spectroscopy and establish that it is a low-gravity, late-type L/T transition dwarf. The spectrum of CWISE J0506+0738 shows possible signatures of CH _4 absorption in its atmosphere, suggesting a colder effective temperature than other known, young, red L dwarfs. We assign a preliminary spectral type for this source of L8 γ –T0 γ . We tentatively find that CWISE J0506+0738 is variable at 3–5 μ m based on multiepoch WISE photometry. Proper motions derived from follow-up UKIRT observations combined with a radial velocity from our Keck/NIRES spectrum and a photometric distance estimate indicate a strong membership probability in the β Pic moving group. A future parallax measurement will help to establish a more definitive moving group membership for this unusual object.
abstract_unstemmed	We present the discovery of CWISE J050626.96+073842.4 (CWISE J0506+0738), an L/T transition dwarf with extremely red near-infrared colors discovered through the Backyard Worlds: Planet 9 citizen science project. Photometry from UKIRT and CatWISE give a ( J − K ) _MKO color of 2.97 ± 0.03 mag and a J _MKO − W2 color of 4.93 ± 0.02 mag, making CWISE J0506+0738 the reddest known free-floating L/T dwarf in both colors. We confirm the extremely red nature of CWISE J0506+0738 using Keck/NIRES near-infrared spectroscopy and establish that it is a low-gravity, late-type L/T transition dwarf. The spectrum of CWISE J0506+0738 shows possible signatures of CH _4 absorption in its atmosphere, suggesting a colder effective temperature than other known, young, red L dwarfs. We assign a preliminary spectral type for this source of L8 γ –T0 γ . We tentatively find that CWISE J0506+0738 is variable at 3–5 μ m based on multiepoch WISE photometry. Proper motions derived from follow-up UKIRT observations combined with a radial velocity from our Keck/NIRES spectrum and a photometric distance estimate indicate a strong membership probability in the β Pic moving group. A future parallax measurement will help to establish a more definitive moving group membership for this unusual object.
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title_short	Redder than Red: Discovery of an Exceptionally Red L/T Transition Dwarf
url	https://doi.org/10.3847/2041-8213/acb0cd https://doaj.org/article/32c925b93a444637813f9fe405d28b9c https://doaj.org/toc/2041-8205
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author2	Adam J. Burgasser Justice Bruursema Jeffrey A. Munn Frederick J. Vrba Dan Caselden Martin Kabatnik Austin Rothermich Arttu Sainio Thomas P. Bickle Scott E. Dahm Aaron M. Meisner J. Davy Kirkpatrick Genaro Suárez Jonathan Gagné Jacqueline K. Faherty Johanna M. Vos Marc J. Kuchner Stephen J. Williams Daniella Bardalez Gagliuffi Christian Aganze Chih-Chun Hsu Christopher Theissen Michael C. Cushing Federico Marocco Sarah Casewell The Backyard Worlds: Planet 9 Collaboration
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Redder than Red: Discovery of an Exceptionally Red L/T Transition Dwarf

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