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HAT-P-42b and HAT-P-43b - Two inflated transiting hot Jupiters from the HATNet Survey

Boisse, I. and Hartman, J. D. and Bakos, G. Á. and Penev, K. and Csubry, Z. and Béky, B. and Latham, D. W. and Bieryla, A. and Torres, G. and Kovács, G. and Buchhave, L. A. and Hansen, T. and Everett, M. and Esquerdo, G. A. and Szklenár, T. and Falco, E. and Shporer, A. and Fulton, B. J. and Noyes, R. W. and Stefanik, R. P. and Lázár, J. and Papp, I. and Sári, P. (2013) HAT-P-42b and HAT-P-43b - Two inflated transiting hot Jupiters from the HATNet Survey. Astronomy and Astrophysics, 558 . Art. No. A86. ISSN 0004-6361.

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Aims. We announce the discovery of two new transiting planets, and provide their accurate initial characterization. Methods. First identified from the HATNet wide-field photometric survey, these candidate transiting planets were then followed-up with a variety of photometric observations. Determining the planetary nature of the objects and characterizing the parameters of the systems were mainly done with the SOPHIE spectrograph at the 1.93 m telescope at OHP and the TRES spectrograph at the 1.5 m telescope at FLWO. Results. HAT-P-42b and HAT-P-43b are typical hot Jupiters on circular orbits around early-G/late-F main sequence host stars, with periods of 4.641878 ± 0.000032 and 3.332687 ± 0.000015 days, masses of 0.044 ± 0.083 and 0.662 ± 0.060 M_J, and radii of 1.280 ± 0.153 and 1.281_(-0.033)^(+0.062) R_J, respectively. These discoveries increase the sample of planets with measured mean densities, which are needed to constrain theories of planetary interiors and atmospheres. Moreover, their hosts are relatively bright (V < 13.5), which facilitates further follow-up studies.

Item Type:Article
Related URLs:
URLURL TypeDescription Paper
Hartman, J. D.0000-0001-8732-6166
Bakos, G. Á.0000-0001-7204-6727
Penev, K.0000-0003-4464-1371
Latham, D. W.0000-0001-9911-7388
Bieryla, A.0000-0001-6637-5401
Torres, G.0000-0002-5286-0251
Buchhave, L. A.0000-0003-1605-5666
Everett, M.0000-0002-0885-7215
Esquerdo, G. A.0000-0002-9789-5474
Shporer, A.0000-0002-1836-3120
Fulton, B. J.0000-0003-3504-5316
Additional Information:© 2013 ESO. Article published by EDP Sciences. Received 22 December 2012. Accepted 14 April 2013. Published online 09 October 2013. The photometric/spectroscopic data presented in this paper are based in part on observations carried out by the Hungarian-made Automated Telescope Network, using telescopes operated at the Fred Lawrence Whipple Observatory (FLWO) of the Smithsonian Astrophysical Observatory (SAO), and at the Submillimeter Array (SMA) of SAO, by the Tillinghast Reflector 1.5m telescope and the 1.2m telescope, both operated by SAO at FLWO, by the SOPHIE spectrograph mounted on the 1.93m telescope at Observatoire de Haute Provence, France (runs DDT-Dec. 2011), by 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 losMuchachos of the Instituto de Astrofisica de Canarias, and by the facilities of the Las Cumbres Observatory Global Telescope. The authors thank all the staff of Haute-Provence Observatory for their contribution to the success of the ELODIE and SOPHIE projects and their support at the 1.93-m telescope. I.B. acknowledges the support of the European Research Council/ European Community under the FP7 through a Starting Grant, as well from Fundaccao para a Ciência e a Tecnologia (FCT), Portugal, through SFRH/BPD/81084/2011 and the project PTDC/CTE-AST/098528/2008. We acknowledge partial funding for HATNet operations by NASA grant NNX08AF23G, and support for performing follow-up observations by NSF grant NSF AST-1108686. G.K. acknowledges the support of the Hungarian Scientific Research Foundation (OTKA) through grant K-81373. The research leading to these results has received funding from the European Community’s Seventh Framework Programme (FP7/2007-2013) under grant agreement number RG226604 (OPTICON). We thank the referee for her/his comments.
Funding AgencyGrant Number
Fundaccao para a Ciência e a Tecnologia (FCT)SFRH/BPD/81084/2011
Fundaccao para a Ciência e a Tecnologia (FCT)PTDC/CTE-AST/098528/2008
Hungarian Scientific Research Foundation (OTKA)K-81373
European Research Council (ERC)RG226604 (OPTICON)
Subject Keywords:planetary systems, techniques: radial velocities, techniques: photometric, stars: individual: HAT-P-42, stars: individual: HAT-P-43
Record Number:CaltechAUTHORS:20140108-100428133
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Official Citation:HAT-P-42b and HAT-P-43b - Two inflated transiting hot Jupiters from the HATNet Survey I. Boisse, J. D. Hartman, G. Á. Bakos, K. Penev, Z. Csubry, B. Béky, D. W. Latham, A. Bieryla, G. Torres, G. Kovács, L. A. Buchhave, T. Hansen, M. Everett, G. A. Esquerdo, T. Szklenár, E. Falco, A. Shporer, B. J. Fulton, R. W. Noyes, R. P. Stefanik, J. Lázár, I. Papp and P. Sári A&A 558 A86 (2013) DOI:
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:43262
Deposited By: Ruth Sustaita
Deposited On:08 Jan 2014 18:47
Last Modified:09 Mar 2020 13:19

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