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Qatar-1b: A hot Jupiter orbiting a metal-rich K dwarf star

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posted on 2012-10-24, 09:10 authored by Collier Cameron A., K. Horne, D. J. A. Brown, G. M. Miller, D. M. Bramich, R. G. West, P. M. Sorensen, D. W. Latham, G. Á. Bakos, G. A. Esquerdo, G. Furész, J. D. Hartman, S. N. Quinn, R. P. Stefanik, A. Szentgyorgyi, D. R. Anderson, C. Hellier, L. A. Buchhave, M. E. Everett, D. Pollacco, J. C. Smith
We report the discovery and initial characterization of Qatar-1b, a hot Jupiter-orbiting metal-rich K dwarf star, the first planet discovered by the Qatar Exoplanet Survey. We describe the strategy used to select candidate transiting planets from photometry generated by the Qatar Exoplanet Survey camera array. We examine the rate of astrophysical and other false positives found during the spectroscopic reconnaissance of the initial batch of candidates. A simultaneous fit to the follow-up radial velocities and photometry of Qatar-1b yields a planetary mass of 1.09 ± 0.08 MJ and a radius of 1.16 ± 0.05 RJ. The orbital period and separation are 1.420 033 ± 0.000 016 d and 0.023 43 ± 0.000 26 au for an orbit assumed to be circular. The stellar density, effective temperature and rotation rate indicate an age greater than 4 Gyr for the system.

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Citation

Monthly Notices of the Royal Astronomical Society , 2011, 417 (1), pp. 709-716

Version

  • VoR (Version of Record)

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Monthly Notices of the Royal Astronomical Society

Publisher

Oxford University Press (OUP)

issn

0035-8711

eissn

1365-2966

Copyright date

2011

Available date

2012-10-24

Publisher version

http://mnras.oxfordjournals.org/content/417/1/709

Language

en

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