Loading…

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

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-minute cadence Transiting Exoplanet Survey Satellite TESS photometry from Sector 1 and thoroughly characterized through follow-up photometry (CHA...

Full description

Saved in:
Bibliographic Details
Published in:arXiv.org 2019-06
Main Authors: Kossakowski, Diana, Espinoza, Néstor, Brahm, Rafael, Andrès Jordàn, Henning, Thomas, Rojas, Felipe, Kürster, Martin, Sarkis, Paula, Schlecker, Martin, Pozuelos, Francisco J, Barkaoui, Khalid, Jehin, Emmanuël, Gillon, Michaël, Matthews, Elisabeth, Horch, Elliott P, Ciardi, David R, Crossfield, Ian J M, Gonzales, Erica, Howell, Steve B, Matson, Rachel A, 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, François, 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, Ségransan, Damien, Shporer, Avi, Stockdale, Chris, Suc, Vincent, Turner, Oliver, Udry, Stéphane
Format: Article
Language:English
Subjects:
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary: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-minute 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 \(1.254\pm0.016\ R_J\), massive (\(2.61^{+0.19}_{-0.12}\ M_J\)) hot Jupiter in a \(5.857\)-day orbit, while TOI-163b is an inflated (\(R_P\) = \(1.478^{+0.022}_{-0.029} R_J\), \(M_P\) = \(1.219\pm0.11 M_J\)) hot Jupiter on a \(P\) = \(4.231\)-day orbit; both planets orbit F-type stars. A particularly interesting result is that TOI-150b shows an eccentric orbit (\(e=0.262^{+0.045}_{-0.037}\)), which is quite uncommon among hot Jupiters. We estimate that this is consistent, however, with the circularization timescale 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).
ISSN:2331-8422
DOI:10.48550/arxiv.1906.09866