TOI-150b and TOI-163b: two transiting hot Jupiters, one eccentric and one inflated, revealed by <i>TESS</i> near and at the edge of the <i>JWST</i> CVZ

Kossakowski, Diana; Espinoza, Nestor; Brahm, Rafael; Jordan, Andres; Henning, Thomas; Rojas, Felipe; Kuerster, Martin; Sarkis, Paula; Schlecker, Martin; Pozuelos, Francisco J.; Barkaoui, Khalid; Jehin, Emmanuel; Gillon, Michael; Matthews, Elisabeth; Horch, Elliott P.; Ciardi, David R.; Crossfield, Ian J. M.; Gonzales, Erica; Howell, Steve B.; Matson, Rachel; Schlieder, Joshua; Jenkins, Jon; Ricker, George; Seager, Sara; Winn, Joshua N.; Li, Jie; Rose, Mark E.; Smith, Jeffrey C.; Dynes, Scott; Morgan, Ed; Villasenor, Jesus Noel; Charbonneau, David; Jaffe, Tess; Yu, Liang; Bakos, Gaspar; Bhatti, Waqas; Bouchy, Francois; Collins, Karen A.; Collins, Kevin, I; Csubry, Zoltan; Evans, Phil; Jensen, Eric L. N.; Lovis, Christophe; Marmier, Maxime; Nielsen, Louise D.; Osip, David; Pepe, Francesco; Relles, Howard M.; Segransan, Damien; Shporer, Avi; Stockdale, Chris; Suc, Vincent; Turner, Oliver; Udry, Stephane
2019
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
DOI
10.1093/mnras/stz2433
We present the discovery of TYC9191-519-1b (TOI-150b, TIC 271893367) and HD271181b (TOI-163b, TIC 179317684), two hot Jupiters initially detected using 30-min cadence Transiting Exoplanet Survey Satellite (TESS) photometry from Sector 1 and thoroughly characterized through follow-up photometry (CHAT, Hazelwood, LCO/CTIO, El Sauce, TRAPPIST-S), high-resolution spectroscopy (FEROS, CORALIE), and speckle imaging (Gemini/DSSI), confirming the planetary nature of the two signals. A simultaneous joint fit of photometry and radial velocity using a new fitting package JULIET reveals that TOI-150b is a 1.254 +/- 0.016 R-J, massive (2.61(-0.12)(+0.19) M-J) hot Jupiter in a 5.857-d orbit, while TOI-163b is an inflated (R-P = 1.478(-0.029)(+0.022) R-J, M-P = 1.219 +/- 0.11 M-J) hot Jupiter on a P = 4.231-d orbit; both planets orbit F-type stars. A particularly interesting result is that TOI-150b shows an eccentric orbit (e = 0.262(-0.037)(+0.045)), which is quite uncommon among hot Jupiters. We estimate that this is consistent, however, with the circularization time-scale, which is slightly larger than the age of the system. These two hot Jupiters are both prime candidates for further characterization - in particular, both are excellent candidates for determining spin-orbit alignments via the Rossiter-McLaughlin (RM) effect and for characterizing atmospheric thermal structures using secondary eclipse observations considering they are both located closely to the James Webb Space Telescope (JWST) Continuous Viewing Zone (CVZ).