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

K.A. Alsubai, N.R. Parley, D.M. Bramich, R.G. West, P.M. Sorensen, A. Collier Cameron, Don Pollacco, S.N. Quinn, J.C. Smith, R.P. Stefanik, A. Szentgyorgyi

Research output: Contribution to journalArticlepeer-review

41 Citations (Scopus)


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.
Original languageEnglish
Pages (from-to)709-716
Number of pages8
JournalMonthly Notices of the Royal Astronomical Society
Issue number1
Publication statusPublished - Oct 2011

ASJC Scopus subject areas

  • Space and Planetary Science
  • Astronomy and Astrophysics

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