TOI-1259Ab – a gas giant planet with 2.7 per cent deep transits and a bound white dwarf companion
<jats:title>ABSTRACT</jats:title> <jats:p>We present TOI-1259Ab, a 1.0RJup gas giant planet transiting a 0.71R⊙ K-dwarf on a 3.48 d orbit. The system also contains a bound white dwarf companion TOI-1259B with a projected distance of ∼1600 au from the planet host. Tr...
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| Format: | Article |
| Language: | English |
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Oxford University Press (OUP)
2023
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| Online Access: | https://hdl.handle.net/1721.1/148524 |
| _version_ | 1826196790517432320 |
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| author | Seager, Sara |
| author2 | Massachusetts Institute of Technology. Department of Earth, Atmospheric, and Planetary Sciences |
| author_facet | Massachusetts Institute of Technology. Department of Earth, Atmospheric, and Planetary Sciences Seager, Sara |
| author_sort | Seager, Sara |
| collection | MIT |
| description | <jats:title>ABSTRACT</jats:title>
<jats:p>We present TOI-1259Ab, a 1.0RJup gas giant planet transiting a 0.71R⊙ K-dwarf on a 3.48 d orbit. The system also contains a bound white dwarf companion TOI-1259B with a projected distance of ∼1600 au from the planet host. Transits are observed in nine TESS sectors and are 2.7 per cent deep – among the deepest known – making TOI-1259Ab a promising target for atmospheric characterization. Our follow-up radial velocity measurements indicate a variability of semiamplitude $K=71\, \rm m\, s^{-1}$, implying a planet mass of 0.44MJup. By fitting the spectral energy distribution of the white dwarf, we derive a total age of $4.08^{+1.21}_{-0.53}$ Gyr for the system. The K dwarf’s light curve reveals rotational variability with a period of 28 d, which implies a gyrochronology age broadly consistent with the white dwarf’s total age.</jats:p> |
| first_indexed | 2024-09-23T10:38:03Z |
| format | Article |
| id | mit-1721.1/148524 |
| institution | Massachusetts Institute of Technology |
| language | English |
| last_indexed | 2024-09-23T10:38:03Z |
| publishDate | 2023 |
| publisher | Oxford University Press (OUP) |
| record_format | dspace |
| spelling | mit-1721.1/1485242023-03-14T03:39:42Z TOI-1259Ab – a gas giant planet with 2.7 per cent deep transits and a bound white dwarf companion Seager, Sara Massachusetts Institute of Technology. Department of Earth, Atmospheric, and Planetary Sciences <jats:title>ABSTRACT</jats:title> <jats:p>We present TOI-1259Ab, a 1.0RJup gas giant planet transiting a 0.71R⊙ K-dwarf on a 3.48 d orbit. The system also contains a bound white dwarf companion TOI-1259B with a projected distance of ∼1600 au from the planet host. Transits are observed in nine TESS sectors and are 2.7 per cent deep – among the deepest known – making TOI-1259Ab a promising target for atmospheric characterization. Our follow-up radial velocity measurements indicate a variability of semiamplitude $K=71\, \rm m\, s^{-1}$, implying a planet mass of 0.44MJup. By fitting the spectral energy distribution of the white dwarf, we derive a total age of $4.08^{+1.21}_{-0.53}$ Gyr for the system. The K dwarf’s light curve reveals rotational variability with a period of 28 d, which implies a gyrochronology age broadly consistent with the white dwarf’s total age.</jats:p> 2023-03-13T17:58:21Z 2023-03-13T17:58:21Z 2021 2023-03-13T17:51:53Z Article http://purl.org/eprint/type/JournalArticle https://hdl.handle.net/1721.1/148524 Seager, Sara. 2021. "TOI-1259Ab – a gas giant planet with 2.7 per cent deep transits and a bound white dwarf companion." Monthly Notices of the Royal Astronomical Society, 507 (3). en 10.1093/MNRAS/STAB2129 Monthly Notices of the Royal Astronomical Society Creative Commons Attribution-Noncommercial-Share Alike http://creativecommons.org/licenses/by-nc-sa/4.0/ application/pdf Oxford University Press (OUP) arXiv |
| spellingShingle | Seager, Sara TOI-1259Ab – a gas giant planet with 2.7 per cent deep transits and a bound white dwarf companion |
| title | TOI-1259Ab – a gas giant planet with 2.7 per cent deep transits and a bound white dwarf companion |
| title_full | TOI-1259Ab – a gas giant planet with 2.7 per cent deep transits and a bound white dwarf companion |
| title_fullStr | TOI-1259Ab – a gas giant planet with 2.7 per cent deep transits and a bound white dwarf companion |
| title_full_unstemmed | TOI-1259Ab – a gas giant planet with 2.7 per cent deep transits and a bound white dwarf companion |
| title_short | TOI-1259Ab – a gas giant planet with 2.7 per cent deep transits and a bound white dwarf companion |
| title_sort | toi 1259ab a gas giant planet with 2 7 per cent deep transits and a bound white dwarf companion |
| url | https://hdl.handle.net/1721.1/148524 |
| work_keys_str_mv | AT seagersara toi1259abagasgiantplanetwith27percentdeeptransitsandaboundwhitedwarfcompanion |