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
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Issue Date
2019-09-17Author
Kossakowski, Diana
Espinoza, Néstor
Brahm, Rafael
Jordán, Andrés
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
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, 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
Publisher
Royal Astronomical Society
Type
Article
Article Version
Scholarly/refereed, publisher version
Rights
Copyright 2019 The Author(s). Published by Oxford University Press on behalf of the Royal Astronomical Society
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Show full item recordAbstract
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 RJ, massive (2.61+0.19−0.12 MJ) hot Jupiter in a 5.857-d orbit, while TOI-163b is an inflated (RP = 1.478+0.022−0.029RJ, MP = 1.219±0.11MJ) 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+0.045−0.037), 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).
Description
This article has been accepted for publication in Monthly Notices of the Royal Astronomical Society ©: 2019 The Author(s). Published by Oxford University Press on behalf of the Royal Astronomical Society. All rights reserved.
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Citation
Diana Kossakowski, Néstor Espinoza, Rafael Brahm, Andrés Jordán, Thomas Henning, Felipe Rojas, Martin Kürster, Paula Sarkis, Martin Schlecker, Francisco J Pozuelos, Khalid Barkaoui, Emmanuël Jehin, Michaël Gillon, Elisabeth Matthews, Elliott P Horch, David R Ciardi, Ian J M Crossfield, Erica Gonzales, Steve B Howell, Rachel Matson, Joshua Schlieder, Jon Jenkins, George Ricker, Sara Seager, Joshua N Winn, Jie Li, Mark E Rose, Jeffrey C Smith, Scott Dynes, Ed Morgan, Jesus Noel Villasenor, David Charbonneau, Tess Jaffe, Liang Yu, Gaspar Bakos, Waqas Bhatti, François Bouchy, Karen A Collins, Kevin I Collins, Zoltan Csubry, Phil Evans, Eric L N Jensen, Christophe Lovis, Maxime Marmier, Louise D Nielsen, David Osip, Francesco Pepe, Howard M Relles, Damien Ségransan, Avi Shporer, Chris Stockdale, Vincent Suc, Oliver Turner, Stéphane Udry, 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, Monthly Notices of the Royal Astronomical Society, Volume 490, Issue 1, November 2019, Pages 1094–1110, https://doi.org/10.1093/mnras/stz2433
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