تقرير
TESS and HARPS reveal two sub-Neptunes around TOI 1062
| العنوان: | TESS and HARPS reveal two sub-Neptunes around TOI 1062 |
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| المؤلفون: | J. F. Otegi, F. Bouchy, R. Helled, D. J. Armstrong, M. Stalport, A. Psaridi, J.-B. Delisle, K.G. Stassun, E. Delgado-Mena, N. C. Santos, N. C. Hara, K. Collins, S. Gandhi, C. Dorn, M. Brogi, M. Fridlund, H. P. Osborn, S. Hoyer, S. Udry, S. Hojjatpanah, L. D. Nielsen, X. Dumusque, V. Adibekyan, D. Conti, R. Schwarz, G. Wang, P. Figueira, J. Lillo-Box, A. Hadjigeorghiou, D. Bayliss, P. A. Strøm, S. G. Sousa, D. Barrado, A. Osborn, S. C. C. Barros, D. J. A. Brown, J. D. Eastman, D. R. Ciardi, A. Vanderburg, R. F. Goeke, N. M. Guerrero, P. T. Boyd, D. A. Caldwell, C. E. Henze, B. McLean, G. Ricker, R. Vanderspek, D. W. Latham, S. Seager, J. Winn, J. M. Jenkins |
| المصدر: | Astronomy & Astrophysics. 653 |
| بيانات النشر: | United States: NASA Center for Aerospace Information (CASI), 2021. |
| سنة النشر: | 2021 |
| مصطلحات موضوعية: | Astronomy, Astrophysics |
| الوصف: | The Transiting Exoplanet Survey Satellite (TESS) mission was designed to perform an all-sky search of planets around bright and nearby stars. Here we report the discovery of two sub-Neptunes orbiting around TOI 1062 (TIC 299799658), a V = 10.25 G9V star observed in the TESS Sectors 1, 13, 27, and 28. We use precise radial velocity observations from HARPS to confirm and characterize these two planets. TOI 1062b has a radius of 2.265(-0.091,+0.096) Rꚛ, a mass of 10.15 ± 0.8 Mꚛ, and an orbital period of 4.1130 ± 0.0015 days. The second planet is not transiting, has a minimum mass of 9.78(−1.18,+1.26) Mꚛ and is near the 2:1 mean motion resonance with the innermost planet with an orbital period of 7.972(−0.024,+0.018) days. We performed a dynamical analysis to explore the proximity of the system to this resonance, and to attempt further constraining the orbital parameters. The transiting planet has a mean density of 4.85(−0.74,+0.84) g/cu. cm and an analysis of its internal structure reveals that it is expected to have a small volatile envelope accounting for 0.35% of the mass at most. The star’s brightness and the proximity of the inner planet to what is know as the radius gap make it an interesting candidate for transmission spectroscopy, which could further constrain the composition and internal structure of TOI 1062b. |
| نوع الوثيقة: | Report |
| اللغة: | English |
| تدمد: | 1432-0746 0004-6361 |
| DOI: | 10.1051/0004-6361/202040247 |
| URL الوصول: | https://ntrs.nasa.gov/citations/20210026640 |
| ملاحظات: | 985788 UID/FIS/04434/2019 UIDB/04434/2020 UIDP/04434/2020 PTDC/FIS-AST/32113/2017 POCI-01-0145-FEDER032113 PTDC/FIS-AST/28953/2017 POCI-01-0145-FEDER-028953 IF/00650/2015/CP1273/CT0001 IF/00849/2015/CP1273/CT0003 SNSF PZ00P2_174028 UK STFC ST/S000631/1 ESP2017-87676-C5-1-R MDM-2017-0737 FCT CEECIND/00826/2018 NSF PD/BD/128119/2016 EUH 2020 851555/SCORE CNES 837319 |
| رقم الأكسشن: | edsnas.20210026640 |
| قاعدة البيانات: | NASA Technical Reports |
| تدمد: | 14320746 00046361 |
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| DOI: | 10.1051/0004-6361/202040247 |