| Record |
Author  |
Clark, J.T.; Addison, B.C.; Okumura, J.; Vach, S.; Errico, A.; Heitzmann, A.; Rodriguez, J.E.; Wright, D.J.; Clerte, M.; Brown, C.J.; Fetherolf, T.; Wittenmyer, R.A.; Plavchan, P.; Kane, S.R.; Horner, J.; Kielkopf, J.F.; Shporer, A.; Tinney, C.G.; Hui-Gen, L.; Ballard, S.; Bowler, B.P.; Mengel, M.W.; Zhou, G.; Lee, A.S.; David, A.; Heim, J.; Lee, M.E.; Sevilla, V.; Zafar, N.E.; Hinkel, N.R.; Allen, B.E.; Bayliss, D.; Berberyan, A.; Berlind, P.; Bieryla, A.; Bouchy, F.; Brahm, R.; Bryant, E.M.; Christiansen, J.L.; Ciardi, D.R..; Ciardi, KN.; Collins, K.A.; Dallant, J.; Davis, A.B.; Dfaz, M.R.; Dressing, C.D.; Esquerdo, G.A.; Harre, J.V.; Howell, S.B.; Jenkins, J.M.; Jensen, E.L.N.; Jones, M.I.; Jordan, A.; Latham, D.W.; Lund, M.B.; McCormac, J.; Nielsen, L.D.; Otegi, J.; Quinn, S.N.; Radford, D.J.; Ricker, G.R.; Schwarz, R.P.; Seager, S.; Smith, A.M.S.; Stockdale, C.; Tan, T.G.; Udry, S.; Vanderspek, R.; Gnnther, M.N.; Wang, S.H.; Wingham, G.; Winn, J.N. |
| Title |
Spinning up a Daze: TESS Uncovers a Hot Jupiter Orbiting the Rapid Rotator TOI-778 |
Type |
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| Year |
2023 |
Publication |
Astronomical Journal |
Abbreviated Journal |
Astron. J. |
| Volume |
165 |
Issue |
5 |
Pages |
207 |
| Keywords |
ANGLO-AUSTRALIAN PLANET; TRANSITING HOT; ADAPTIVE OPTICS; GIANT PLANETS; DETERMINISTIC MODEL; OCCURRENCE RATES; 51 PEGASI; STARS; KEPLER; MASS |
| Abstract |
NASA's Transiting Exoplanet Survey Satellite (TESS) mission has been uncovering a growing number of exoplanets orbiting nearby, bright stars. Most exoplanets that have been discovered by TESS orbit narrow-line, slow-rotating stars, facilitating the confirmation and mass determination of these worlds. We present the discovery of a hot Jupiter orbiting a rapidly rotating (v sin (i) = 35.1 +/- 1.0 km s(-1) early F3V-dwarf, HD 115447 (TOI-778). The transit signal taken from Sectors 10 and 37 of TESS's initial detection of the exoplanet is combined with follow-up ground-based photometry and velocity measurements taken from MINERVA-Australis, TRES, CORALIE, and CHIRON to confirm and characterize TOI-778 b. A joint analysis of the light curves and the radial velocity measurements yields a mass, a radius, and an orbital period for TOI-778 b of 2.76(-0.23)(+0.24) M-J, 1.370 +/- 0.043 R-J, and similar to 4.63 days, respectively. The planet orbits a bright (V = 9.1 mag) F3-dwarf with M = 1.40 +/- 0.05 M-circle dot, R = 1.70 +/- 0.05 R-circle dot, and log g = 4.05 +/- 0.17. We observed a spectroscopic transit of TOI-778 b, which allowed us to derive a sky-projected spin-orbit angle of 18 degrees +/- 11 degrees, consistent with an aligned planetary system. This discovery demonstrates the capability of smaller-aperture telescopes such as MINERVA-Australis to detect the radial velocity signals produced by planets orbiting broad-line, rapidly rotating stars. |
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| ISSN |
0004-6256 |
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| Notes |
WOS:000982918300001 |
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UAI @ alexi.delcanto @ |
Serial |
1836 |
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