TOI-1268b: The youngest hot Saturn-mass transiting exoplanet
We report the discovery of TOI-1268b, a transiting Saturn-mass planet from the TESS space mission. With an age of less than 1 Gyr, derived from various age indicators, TOI-1268b is the youngest Saturn-mass planet known to date; it contributes to the small sample of well-characterised young planets...
| Main Authors: | , , , , , , , , , , , , , , , , , , |
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| Other Authors: | |
| Format: | Article |
| Language: | English |
| Published: |
EDP Sciences
2023
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| Online Access: | https://hdl.handle.net/1721.1/148389 |
| _version_ | 1826192584062533632 |
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| author | Subjak, J Endl, M Chaturvedi, P Karjalainen, R Cochran, WD Esposito, M Gandolfi, D Lam, KWF Stassun, K Zák, J Lodieu, N Boffin, HMJ MacQueen, PJ Hatzes, A Guenther, EW Georgieva, I Grziwa, S Schmerling, H Skarka, M |
| 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 Subjak, J Endl, M Chaturvedi, P Karjalainen, R Cochran, WD Esposito, M Gandolfi, D Lam, KWF Stassun, K Zák, J Lodieu, N Boffin, HMJ MacQueen, PJ Hatzes, A Guenther, EW Georgieva, I Grziwa, S Schmerling, H Skarka, M |
| author_sort | Subjak, J |
| collection | MIT |
| description | We report the discovery of TOI-1268b, a transiting Saturn-mass planet from the TESS space mission. With an age of less than 1 Gyr,
derived from various age indicators, TOI-1268b is the youngest Saturn-mass planet known to date; it contributes to the small sample of
well-characterised young planets. It has an orbital period of P = 8.1577080 ± 0.0000044 days, and transits an early K-dwarf star with
a mass of M? = 0.96 ± 0.04 M , a radius of R? = 0.92 ± 0.06 R , an effective temperature of Teff = 5300 ± 100 K, and a metallicity of
0.36 ± 0.06 dex. By combining TESS photometry with high-resolution spectra acquired with the Tull spectrograph at the McDonald
Observatory, and the high-resolution spectrographs at the Tautenburg and Ondˇrejov Observatories, we measured a planetary mass of
Mp = 96.4 ± 8.3 M⊕ and a radius of Rp = 9.1 ± 0.6 R⊕. TOI-1268 is an ideal system for studying the role of star-planet tidal interactions
for non-inflated Saturn-mass planets. We used system parameters derived in this paper to constrain the planet’s tidal quality factor to the
range of 104.5−5.3
. When compared with the sample of other non-inflated Saturn-mass planets, TOI-1268b is one of the best candidates
for transmission spectroscopy studies. |
| first_indexed | 2024-09-23T09:21:33Z |
| format | Article |
| id | mit-1721.1/148389 |
| institution | Massachusetts Institute of Technology |
| language | English |
| last_indexed | 2024-09-23T09:21:33Z |
| publishDate | 2023 |
| publisher | EDP Sciences |
| record_format | dspace |
| spelling | mit-1721.1/1483892023-03-08T03:46:06Z TOI-1268b: The youngest hot Saturn-mass transiting exoplanet Subjak, J Endl, M Chaturvedi, P Karjalainen, R Cochran, WD Esposito, M Gandolfi, D Lam, KWF Stassun, K Zák, J Lodieu, N Boffin, HMJ MacQueen, PJ Hatzes, A Guenther, EW Georgieva, I Grziwa, S Schmerling, H Skarka, M Massachusetts Institute of Technology. Department of Earth, Atmospheric, and Planetary Sciences We report the discovery of TOI-1268b, a transiting Saturn-mass planet from the TESS space mission. With an age of less than 1 Gyr, derived from various age indicators, TOI-1268b is the youngest Saturn-mass planet known to date; it contributes to the small sample of well-characterised young planets. It has an orbital period of P = 8.1577080 ± 0.0000044 days, and transits an early K-dwarf star with a mass of M? = 0.96 ± 0.04 M , a radius of R? = 0.92 ± 0.06 R , an effective temperature of Teff = 5300 ± 100 K, and a metallicity of 0.36 ± 0.06 dex. By combining TESS photometry with high-resolution spectra acquired with the Tull spectrograph at the McDonald Observatory, and the high-resolution spectrographs at the Tautenburg and Ondˇrejov Observatories, we measured a planetary mass of Mp = 96.4 ± 8.3 M⊕ and a radius of Rp = 9.1 ± 0.6 R⊕. TOI-1268 is an ideal system for studying the role of star-planet tidal interactions for non-inflated Saturn-mass planets. We used system parameters derived in this paper to constrain the planet’s tidal quality factor to the range of 104.5−5.3 . When compared with the sample of other non-inflated Saturn-mass planets, TOI-1268b is one of the best candidates for transmission spectroscopy studies. 2023-03-07T15:48:53Z 2023-03-07T15:48:53Z 2022 2023-03-07T15:41:21Z Article http://purl.org/eprint/type/JournalArticle https://hdl.handle.net/1721.1/148389 Subjak, J, Endl, M, Chaturvedi, P, Karjalainen, R, Cochran, WD et al. 2022. "TOI-1268b: The youngest hot Saturn-mass transiting exoplanet." Astronomy and Astrophysics, 662. en 10.1051/0004-6361/202142883 Astronomy and Astrophysics Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. application/pdf EDP Sciences EDP Sciences |
| spellingShingle | Subjak, J Endl, M Chaturvedi, P Karjalainen, R Cochran, WD Esposito, M Gandolfi, D Lam, KWF Stassun, K Zák, J Lodieu, N Boffin, HMJ MacQueen, PJ Hatzes, A Guenther, EW Georgieva, I Grziwa, S Schmerling, H Skarka, M TOI-1268b: The youngest hot Saturn-mass transiting exoplanet |
| title | TOI-1268b: The youngest hot Saturn-mass transiting exoplanet |
| title_full | TOI-1268b: The youngest hot Saturn-mass transiting exoplanet |
| title_fullStr | TOI-1268b: The youngest hot Saturn-mass transiting exoplanet |
| title_full_unstemmed | TOI-1268b: The youngest hot Saturn-mass transiting exoplanet |
| title_short | TOI-1268b: The youngest hot Saturn-mass transiting exoplanet |
| title_sort | toi 1268b the youngest hot saturn mass transiting exoplanet |
| url | https://hdl.handle.net/1721.1/148389 |
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