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.
@article{arxiv.1012.3027,
title = {Qatar-1b: a hot Jupiter orbiting a metal-rich K dwarf star},
author = {K. A. Alsubai and N. R. Parley and D. M. Bramich and R. G. West and P. M. Sorensen and A. Collier Cameron and D. W. Latham and K. Horne and D. R. Anderson and D. J. A. Brown and L. A. Buchhave and G. A. Esquerdo and M. E. Everett and G. Fürész and C. Hellier and G. M. Miller and D. Pollacco and S. N. Quinn and J. C. Smith and R. P. Stefanik and A. Szentgyorgyi},
journal= {arXiv preprint arXiv:1012.3027},
year = {2015}
}
Comments
8 pages, 5 figures, submitted to Monthly Notices of the Royal Astronomical Society