Qatar-1b: a hot Jupiter orbiting a metal-rich K dwarf star
Autor: | K. A. Alsubai, N. R. Parley, D. M. Bramich, R. G. West, P. M. Sorensen, A. Collier Cameron, D. W. Latham, K. Horne, D. R. Anderson, G. Á. Bakos, D. J. A. Brown, L. A. Buchhave, G. A. Esquerdo, M. E. Everett, G. Fűrész, J. D. Hartman, C. Hellier, G. M. Miller, D. Pollacco, S. N. Quinn, J. C. Smith, R. P. Stefanik, A. Szentgyorgyi |
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Rok vydání: | 2011 |
Předmět: |
Physics
Dwarf star Astronomy Astronomy and Astrophysics Astrophysics::Cosmology and Extragalactic Astrophysics Effective temperature Orbital period Exoplanet Space and Planetary Science Planet Hot Jupiter Astrophysics::Solar and Stellar Astrophysics Astrophysics::Earth and Planetary Astrophysics Planetary mass Stellar density Astrophysics::Galaxy Astrophysics |
Zdroj: | Monthly Notices of the Royal Astronomical Society. 417:709-716 |
ISSN: | 0035-8711 |
Popis: | We report the discovery and initial characterisation of Qatar-1b, a hot Jupiter orbiting a metal-rich K dwarf star, the first planet discovered by the Alsubai Project exoplanet transit survey. We describe the strategy used to select candidate transiting planets from photometry generated by the Alsubai Project instrument. 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 yield a planetary mass of 1.09+/-0.08 Mjup and a radius of 1.16+/-0.05 Rjup. The orbital period and separation are 1.420033 days and 0.0234 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. |
Databáze: | OpenAIRE |
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