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HAT-P-27b: A Hot Jupiter Transiting a G Star on a 3 Day Orbit

Béky, B. and Bakos, G. Á. and Hartman, J. and Torres, G. and Latham, D. W. and Jordán, A. and Arriagada, P. and Bayliss, D. and Kiss, L. L. and Kovács, Géza and Quinn, S. N. and Marcy, G. W. and Howard, A. W. and Fischer, D. A. and Johnson, J. A. and Esquerdo, G. A. and Noyes, R. W. and Buchhave, L. A. and Sasselov, D. D. and Stefanik, R. P. and Perumpilly, G. and Lázár, J. and Papp, I. and Sári, P. (2011) HAT-P-27b: A Hot Jupiter Transiting a G Star on a 3 Day Orbit. Astrophysical Journal, 734 (2). Art. No. 109. ISSN 0004-637X.

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We report the discovery of HAT-P-27b, an exoplanet transiting the moderately bright G8 dwarf star GSC 0333-00351 (V = 12.214). The orbital period is 3.039586 ± 0.000012 days, the reference epoch of transit is 2455186.01879 ± 0.00054 (BJD), and the transit duration is 0.0705 ± 0.0019 days. The host star with its effective temperature 5300 ± 90 K is somewhat cooler than the Sun and is more metal-rich with a metallicity of +0.29 ± 0.10. Its mass is 0.94 ± 0.04 M_☉ and radius is 0.90^(+0.05)_(–0.04) R_☉. For the planetary companion we determine a mass of 0.660 ± 0.033 M_J and radius of 1.038^(+0.077)_(–0.058) R_J. For the 30 known transiting exoplanets between 0.3 M_J and 0.8 M_J, a negative correlation between host star metallicity and planetary radius and an additional dependence of planetary radius on equilibrium temperature are confirmed at a high level of statistical significance.

Item Type:Article
Related URLs:
URLURL TypeDescription
Bakos, G. Á.0000-0001-7204-6727
Torres, G.0000-0002-5286-0251
Latham, D. W.0000-0001-9911-7388
Bayliss, D.0000-0001-6023-1335
Quinn, S. N.0000-0002-8964-8377
Marcy, G. W.0000-0002-2909-0113
Howard, A. W.0000-0001-8638-0320
Fischer, D. A.0000-0003-2221-0861
Johnson, J. A.0000-0001-9808-7172
Esquerdo, G. A.0000-0002-9789-5474
Buchhave, L. A.0000-0003-1605-5666
Sasselov, D. D.0000-0001-7014-1771
Additional Information:© 2011 American Astronomical Society. Received 2011 January 18; accepted 2011 April 8; published 2011 June 3. 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) and NASA (N018Hr, N167Hr). HATNet operations have been funded by NASA grants NNG04GN74G, NNX08AF23G, and SAO IR&D grants. Work of G. Á. B. was supported by the Postdoctoral Fellowship of the NSF Astronomy and Astrophysics Program AST-0702843. G.T. acknowledges partial support from NASA grant NNX09AF59G. A.J. acknowledges support from Fondecyt project 1095213, BASAL CATA PFB-06, FONDAP CFA 15010003, MIDEPLAN ICM Nucleus P07-021-F, and Anillo ACT-086. G.K. thanks the Hungarian Scientific Research Foundation (OTKA) for support through grant K-81373. L.L.K. is supported by the “Lendület” Young Researchers Program of the Hungarian Academy of Sciences and the Hungarian OTKA grants K76816, K83790 and MB08C 81013. Tamás Szalai (University of Szeged) is acknowledged for his assistance during the ANU 2.3 m observations. We also acknowledge partial support from the Kepler Mission under NASA Cooperative Agreement NCC2-1390 (D.W.L., PI). This research has made use of Keck telescope time granted through NOAO (A201Hr) and NASA (N018Hr, N167Hr). We also thank Mount Stromlo Observatory and Siding Spring Observatory for the ANU 2.3 m telescope time.
Funding AgencyGrant Number
Smithsonian Astrophysical ObservatoryUNSPECIFIED
Fondo Nacional de Desarrollo Científico y Tecnológico (FONDECYT)1095213
Fondo de Financiamiento de Centros de Investigación en Áreas Prioritarias (FONDAP)15010003
MIDEPLAN ICM NucleusP07-021-F
Hungarian Scientific Research Fund (OTKA)UNSPECIFIED
Subject Keywords:planetary systems; stars: individual (HAT-P-27, GSC 0333-00351); techniques: photometric; techniques: spectroscopic
Issue or Number:2
Classification Code:PACS: 97.82.-j; 95.10.Gi; 97.20.Jg; 95.85.Kr
Record Number:CaltechAUTHORS:20110624-094924045
Persistent URL:
Official Citation:HAT-P-27b: A Hot Jupiter Transiting a G Star on a 3 Day Orbit B. Béky et al. 2011 ApJ 734 109
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:24198
Deposited By: Jason Perez
Deposited On:24 Jun 2011 18:32
Last Modified:09 Mar 2020 13:19

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