A Caltech Library Service

HD 2685 b: a hot Jupiter orbiting an early F-type star detected by TESS

Jones, Matías I. and Christiansen, Jessie L. and Ciardi, David and Beichman, Charles (2019) HD 2685 b: a hot Jupiter orbiting an early F-type star detected by TESS. Astronomy and Astrophysics, 625 . Art. No. A16. ISSN 0004-6361. doi:10.1051/0004-6361/201834640.

[img] PDF - Published Version
See Usage Policy.

[img] PDF - Submitted Version
See Usage Policy.


Use this Persistent URL to link to this item:


We report on the confirmation of a transiting giant planet around the relatively hot (T_(eff) = 6801 ± 76 K) star HD 2685, whose transit signal was detected in Sector 1 data of NASA’s TESS mission. We confirmed the planetary nature of the transit signal using Doppler velocimetric measurements with CHIRON, CORALIE, and FEROS, as well as using photometric data obtained with the Chilean-Hungarian Automated Telescope and the Las Cumbres Observatory. From the joint analysis of photometry and radial velocities, we derived the following parameters for HD 2685 b: P = 4.12688_(−0.00004)^(+0.00005) days, e= 0.091_(−0.047)^(+0.039), M_P = 1.17 ± 0.12 M_J, and RP =1.44 ± 0.05 RJ. This system is a typical example of an inflated transiting hot Jupiter in a low-eccentricity orbit. Based on the apparent visual magnitude (V = 9.6 mag) of the host star, this is one of the brightest known stars hosting a transiting hot Jupiter, and it is a good example of the upcoming systems that will be detected by TESS during the two-year primary mission. This is also an excellent target for future ground- and space-based atmospheric characterization as well as a good candidate for measuring the projected spin-orbit misalignment angle through the Rossiter–McLaughlin effect.

Item Type:Article
Related URLs:
URLURL TypeDescription Paper
Christiansen, Jessie L.0000-0002-8035-4778
Ciardi, David0000-0002-5741-3047
Beichman, Charles0000-0002-5627-5471
Additional Information:© 2019 ESO. Article published by EDP Sciences. Received 13 November 2019; Accepted 11 February 2019. Published online 01 May 2019. S.W. and J.N.W. thank the Heising-Simons Foundation for their generous support. C.Z. is supported by a Dunlap Fellowship at the Dunlap Institute for Astronomy & Astrophysics, funded through an endowment established by the Dunlap family and the University of Toronto. A.V.’s work was performed under contract with the California Institute of Technology (Caltech)/Jet Propulsion Laboratory (JPL) funded by NASA through the Sagan Fellowship Program executed by the NASA Exoplanet Science Institute. A.J. acknowledges support from FONDECYT project 1171208, CONICYT project Basal AFB-170002, and by the Ministry for the Economy, Development, and Tourism’s Programa Iniciativa Científica Milenio through grant IC 120009, awarded to the Millennium Institute of Astrophysics (MAS). We acknowledge the use of TESS Alert data, which is currently in a beta test phase, from pipelines at the TESS Science Office and at the TESS Science Processing Operations Center. This research has made use of the Exoplanet Follow-up Observation Program website, which is operated by the California Institute of Technology, under contract with the National Aeronautics and Space Administration under the Exoplanet Exploration Program. This paper includes data collected by the TESS mission, which are publicly available from the Mikulski Archive for Space Telescopes (MAST). This work makes use of observations from the LCOGT network.
Group:Infrared Processing and Analysis Center (IPAC)
Funding AgencyGrant Number
Heising-Simons FoundationUNSPECIFIED
Dunlap Institute for Astronomy and AstrophysicsUNSPECIFIED
University of TorontoUNSPECIFIED
Fondo Nacional de Desarrollo Científico y Tecnológico (FONDECYT)1171208
Comisión Nacional de Investigación Científica y Tecnológica (CONICYT)BASAL AFB-170002
Iniciativa Científica Milenio del Ministerio de Economía, Fomento y TurismoIC120009
Millennium Institute of Astrophysics (MAS)UNSPECIFIED
Subject Keywords:techniques: radial velocities – planets and satellites: detection – instrumentation: spectrographs – planetary systems–methods: observational
Record Number:CaltechAUTHORS:20190606-094633978
Persistent URL:
Official Citation:HD 2685 b: a hot Jupiter orbiting an early F-type star detected by TESS. Matías I. Jones, Rafael Brahm, Nestor Espinoza, Songhu Wang, Avi Shporer, Thomas Henning, Andrés Jordán, Paula Sarkis, Leonardo A. Paredes, James Hodari-Sadiki, Todd Henry, Bryndis Cruz, Louise D. Nielsen, François Bouchy, Francesco Pepe, Damien Ségransan, Oliver Turner, Stéphane Udry, Maxime Marmier, Christophe Lovis, Gaspar Bakos, David Osip, Vincent Suc, Carl Ziegler, Andrei Tokovinin, Nick M. Law, Andrew W. Mann, Howard Relles, Karen A. Collins, Daniel Bayliss, Elyar Sedaghati, David W. Latham, Sara Seager, Joshua N. Winn, Jon M. Jenkins, Jeffrey C. Smith, Misty Davies, Peter Tenenbaum, Jason Dittmann, Andrew Vanderburg, Jessie L. Christiansen, Kari Haworth, John Doty, Gabor Furész, Greg Laughlin, Elisabeth Matthews, Ian Crossfield, Steve Howell, David Ciardi, Erica Gonzales, Rachel Matson, Charles Beichman and Joshua Schlieder. A&A, 625 (2019) A16. DOI:
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:96189
Deposited By: Tony Diaz
Deposited On:06 Jun 2019 22:11
Last Modified:16 Nov 2021 17:18

Repository Staff Only: item control page