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Hat-P-25b: A Hot-Jupiter Transiting a Moderately Faint G Star

Quinn, S. N. and Bakos, G. Á. and Hartmann, J. and Torres, G. and Kovács, G. and Latham, D. W. and Noyes, R. W. and Fischer, D. A. and Johnson, J. A. and Marcy, G. W. and Howard, A. W. and Szentgyorgyi, A. and Fűrész, G. and Buchhave, L. A. and Béky, B. and Sasselov, D. D. and Stefanik, R. P. and Perumpilly, G. and Everett, M. and Lázár, J. and Papp, I. and Sári, P. (2012) Hat-P-25b: A Hot-Jupiter Transiting a Moderately Faint G Star. Astrophysical Journal, 745 (1). Art. No. 80. ISSN 0004-637X.

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We report the discovery of HAT-P-25b, a transiting extrasolar planet orbiting the V = 13.19 G5 dwarf star GSC 1788-01237, with a period P = 3.652836 ± 0.000019 days, transit epoch T_c = 2455176.85173 ± 0.00047 (BJD—barycentric Julian dates throughout the paper are calculated from Coordinated Universal Time, UTC), and transit duration 0.1174 ± 0.0017 days. The host star has a mass of 1.01 ± 0.03 M_☉, radius of 0.96^(+0.05)_(– 0.04) R_☉, effective temperature 5500 ± 80 K, and metallicity [Fe/H] = +0.31 ± 0.08. The planetary companion has a mass of 0.567 ± 0.022 M_J and radius of 1.190^(+0.081)_(–0.056) R_J yielding a mean density of 0.42 ± 0.07 g cm^(–3).

Item Type:Article
Related URLs:
URLURL TypeDescription
Quinn, S. N.0000-0002-8964-8377
Bakos, G. Á.0000-0001-7204-6727
Torres, G.0000-0002-5286-0251
Latham, D. W.0000-0001-9911-7388
Fischer, D. A.0000-0003-2221-0861
Johnson, J. A.0000-0001-9808-7172
Marcy, G. W.0000-0002-2909-0113
Howard, A. W.0000-0001-8638-0320
Buchhave, L. A.0000-0003-1605-5666
Sasselov, D. D.0000-0001-7014-1771
Everett, M.0000-0002-0885-7215
Additional Information:© 2012 American Astronomical Society. Received 2010 August 20; accepted 2011 November 4; published 2011 December 29. Based in part on observations obtained at the W. M. Keck Observatory, which is operated by the University of California and the California Institute of Technology. Keck time has been granted by NOAO (A201Hr), NASA (N018Hr and N167Hr), and the NASA Gemini-Keck time-exchange program (G329Hr). Based in part on observations made with the Nordic Optical Telescope, operated on the island of La Palma jointly by Denmark, Finland, Iceland, Norway, and Sweden, in the Spanish Observatorio del Roque de los Muchachos of the Instituto de Astrofisica de Canarias. HATNet operations have been funded by NASA grants NNG04GN74G, NNX08AF23G, and SAO IR&D grants. Work of G.Á.B. and J. Johnson were supported by the Postdoctoral Fellowship of the NSF Astronomy and Astrophysics Program (AST-0702843 and AST-0702821, respectively). G.T. acknowledges partial support from NASA grant NNX09AF59G. We acknowledge partial support also from the Kepler Mission under NASA Cooperative Agreement NCC2-1390 (PI: D.W. Latham). G.K. thanks the Hungarian Scientific Research Foundation (OTKA) for support through grant K-81373. This research has made use of Keck telescope time granted through NOAO (A201Hr), NASA (N018Hr and N167Hr), and the NASA Gemini-Keck time-exchange program (G329Hr). This research has also made use of the NASA/IPAC Infrared Science Archive, which is operated by the Jet Propulsion Laboratory, California Institute of Technology, under contract with the National Aeronautics and Space Administration.
Funding AgencyGrant Number
Smithsonian Astrophysical ObservatoryUNSPECIFIED
NSF Astronomy and Astrophysics FellowshipAST-0702843
NSF Astronomy and Astrophysics FellowshipAST-0702821
Hungarian Scientific Research Foundation (OTKA)K-81373
National Optical Astronomy Observatory (NOAO)A201Hr
Subject Keywords:planetary systems; stars: individual (HAT-P-25, GSC 1788-01237); techniques: photometric; techniques: spectroscopic
Issue or Number:1
Record Number:CaltechAUTHORS:20120404-072516851
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Official Citation:HAT-P-25b: A Hot-Jupiter Transiting a Moderately Faint G Star S. N. Quinn et al. 2012 ApJ 745 80
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:29968
Deposited By: Ruth Sustaita
Deposited On:04 Apr 2012 15:48
Last Modified:09 Mar 2020 13:19

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