Bibcode
Nielsen, L. D.; Brahm, R.; Bouchy, F.; Espinoza, N.; Turner, O.; Rappaport, S.; Pearce, L.; Ricker, G.; Vanderspek, R.; Latham, D. W.; Seager, S.; Winn, J. N.; Jenkins, J. M.; Acton, J. S.; Bakos, G.; Barclay, T.; Barkaoui, K.; Bhatti, W.; Briceño, C.; Bryant, E. M.; Burleigh, M. R.; Ciardi, D. R.; Collins, K. A.; Collins, K. I.; Cooke, B. F.; Csubry, Z.; dos Santos, L. A.; Eigmüller, Ph.; Fausnaugh, M. M.; Gan, T.; Gillon, M.; Goad, M. R.; Guerrero, N.; Hagelberg, J.; Hart, R.; Henning, T.; Huang, C. X.; Jehin, E.; Jenkins, J. S.; Jordán, A.; Kielkopf, J. F.; Kossakowski, D.; Lavie, B.; Law, N.; Lendl, M.; de Leon, J. P.; Lovis, C.; Mann, A. W.; Marmier, M.; McCormac, J.; Mori, M.; Moyano, M.; Narita, N.; Osip, D.; Otegi, J. F.; Pepe, F.; Pozuelos, F. J.; Raynard, L.; Relles, H. M.; Sarkis, P.; Ségransan, D.; Seidel, J. V.; Shporer, A.; Stalport, M.; Stockdale, C.; Suc, V.; Tamura, M.; Tan, T. G.; Tilbrook, R. H.; Ting, E. B.; Trifonov, T.; Udry, S.; Vanderburg, A.; Wheatley, P. J.; Wingham, G.; Zhan, Z.; Ziegler, C.
Bibliographical reference
Astronomy and Astrophysics
Advertised on:
7
2020
Journal
Citations
27
Refereed citations
25
Description
We report the confirmation and mass determination of three hot Jupiters discovered by the Transiting Exoplanet Survey Satellite (TESS) mission: HIP 65Ab (TOI-129, TIC-201248411) is an ultra-short-period Jupiter orbiting a bright (V = 11.1 mag) K4-dwarf every 0.98 days. It is a massive 3.213 ± 0.078 MJ planet in a grazing transit configuration with an impact parameter of b = 1.17-0.08+0.10. As a result the radius is poorly constrained, 2.03-0.49+0.61RJ. The planet's distance to its host star is less than twice the separation at which it would be destroyed by Roche lobe overflow. It is expected to spiral into HIP 65A on a timescale ranging from 80 Myr to a few gigayears, assuming a reduced tidal dissipation quality factor of Qs' = 107 - 109. We performed a full phase-curve analysis of the TESS data and detected both illumination- and ellipsoidal variations as well as Doppler boosting. HIP 65A is part of a binary stellar system, with HIP 65B separated by 269 AU (3.95 arcsec on sky). TOI-157b (TIC 140691463) is a typical hot Jupiter with a mass of 1.18 ± 0.13 MJ and a radius of 1.29 ± 0.02 RJ. It has a period of 2.08 days, which corresponds to a separation of just 0.03 AU. This makes TOI-157 an interesting system, as the host star is an evolved G9 sub-giant star (V = 12.7). TOI-169b (TIC 183120439) is a bloated Jupiter orbiting a V = 12.4 G-type star. It has a mass of 0.79 ±0.06 MJ and a radius of 1.09-0.05+0.08RJ. Despite having the longest orbital period (P = 2.26 days) of the three planets, TOI-169b receives the most irradiation and is situated on the edge of the Neptune desert. All three host stars are metal rich with [Fe / H] ranging from 0.18 to0.24.
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The search for life in the universe has been driven by recent discoveries of planets around other stars (known as exoplanets), becoming one of the most active fields in modern astrophysics. The growing number of new exoplanets discovered in recent years and the recent advance on the study of their atmospheres are not only providing new valuable
Enric
Pallé Bago