A fast hybrid algorithm for exoplanetary transit searches
A. Collier Cameron,Don Pollacco,R. A. Street,Tim Lister,Tim Lister,Richard G. West,D. M. Wilson,Frederic Pont,Damian J. Christian,Will Clarkson,B. Enoch,A. Evans,Alan Fitzsimmons,Carole A. Haswell,Coel Hellier,Simon Hodgkin,Keith Horne,Jonathan Irwin,Stephen R. Kane,Francis P. Keenan,Andrew Norton,N. R. Parley,J. P. Osborne,Robert Ryans,Ian Skillen,Peter J. Wheatley +25 more
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In this paper, a fast and efficient hybrid algorithm for selecting exoplanetary candidates from wide-field transit surveys is presented, based on the widely used SysRem and Box Least Squares (BLS) algorithms.Abstract:
We present a fast and efficient hybrid algorithm for selecting exoplanetary candidates from wide-field transit surveys. Our method is based on the widely used SysRem and Box Least-Squares (BLS) algorithms. Patterns of systematic error that are common to all stars on the frame are mapped and eliminated using the SysRem algorithm. The remaining systematic errors caused by spatially localized flat-fielding and other errors are quantified using a boxcar-smoothing method. We show that the dimensions of the search-parameter space can be reduced greatly by carrying out an initial BLS search on a coarse grid of reduced dimensions, followed by Newton-Raphson refinement of the transit parameters in the vicinity of the most significant solutions. We illustrate the method's operation by applying it to data from one field of the SuperWASP survey, comprising 2300 observations of 7840 stars brighter than V = 13.0. We identify 11 likely transit candidates. We reject stars that exhibit significant ellipsoidal variations caused indicative of a stellar-mass companion. We use colours and proper motions from the Two Micron All Sky Survey and USNO-B1.0 surveys to estimate the stellar parameters and the companion radius. We find that two stars showing unambiguous transit signals pass all these tests, and so qualify for detailed high-resolution spectroscopic follow-up.read more
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The Exoplanet Handbook
TL;DR: In this paper, the authors present an overview of the solar system and its evolution, including the formation and evolution of stars, asteroids, and free-floating planets, as well as their internal and external structures.
Journal ArticleDOI
WASP-12b: the hottest transiting extrasolar planet yet discovered
Leslie Hebb,Andrew Collier-Cameron,B. Loeillet,Don Pollacco,Guillaume Hébrard,Rachel Street,François Bouchy,H. C. Stempels,C. Moutou,E. K. Simpson,Stéphane Udry,Yogesh C. Joshi,Richard G. West,I. Skillen,D. M. Wilson,Iain McDonald,Neale P. Gibson,Suzanne Aigrain,David R. Anderson,C. R. Benn,Damian J. Christian,B. Enoch,Carole A. Haswell,Coel Hellier,Keith Horne,Jonathan Irwin,T. A. Lister,Pierre F. L. Maxted,Michel Mayor,Andrew Norton,N. R. Parley,Frederic Pont,D. Queloz,Barry Smalley,Peter J. Wheatley +34 more
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Journal ArticleDOI
Efficient identification of exoplanetary transit candidates from SuperWASP light curves
A. Collier Cameron,D. M. Wilson,Richard G. West,Leslie Hebb,Xiaobin Wang,Xiaobin Wang,Suzanne Aigrain,François Bouchy,Damian J. Christian,Will Clarkson,B. Enoch,Massimiliano Esposito,Eike W. Guenther,Carole A. Haswell,Guillaume Hébrard,Coel Hellier,Keith Horne,Jonathan Irwin,Stephen R. Kane,B. Loeillet,T. A. Lister,T. A. Lister,Pierre F. L. Maxted,Michel Mayor,C. Moutou,N. R. Parley,Don Pollacco,Frederic Pont,Didier Queloz,Robert Ryans,Ian Skillen,R. A. Street,R. A. Street,R. A. Street,Stéphane Udry,Peter J. Wheatley +35 more
TL;DR: In this paper, a constrained optimization of X 2 combined with a Bayesian prior based on the main-sequence mass and radius expected from the Two Micron All Sky Survey J -H colour was used to quantify both the departure of the host star from the mainsequence mass-radius relation and the probability that the companion radius is less than 1.5 Jupiter radii.
Journal ArticleDOI
WASP-1b and WASP-2b: Two new transiting exoplanets detected with SuperWASP and SOPHIE
A. Collier Cameron,François Bouchy,Guillaume Hébrard,Pierre F. L. Maxted,Don Pollacco,Frederic Pont,Ian Skillen,Barry Smalley,R. A. Street,Richard G. West,D. M. Wilson,Suzanne Aigrain,Damian J. Christian,Will Clarkson,B. Enoch,A. Evans,Alan Fitzsimmons,M. Fleenor,Michaël Gillon,Carole A. Haswell,Leslie Hebb,Coel Hellier,Simon Hodgkin,Keith Horne,Jonathan Irwin,Stephen R. Kane,Francis P. Keenan,B. Loeillet,Tim Lister,Tim Lister,Michel Mayor,C. Moutou,Andrew Norton,J. P. Osborne,N. R. Parley,Didier Queloz,Robert Ryans,A. H. M. J. Triaud,Stéphane Udry,Peter J. Wheatley +39 more
TL;DR: In this article, the authors detected low-amplitude radial-velocity variations in two stars, USNO-B1.0 1219− 0005465 (GSC 02265−00107 = WASP•B1) and WASP-2b, which were identified as likely host stars of transiting exoplanets in the 2004 SuperWASP wide-field transit survey.
Journal ArticleDOI
The first WASP public data release
Oliver Butters,Richard G. West,David R. Anderson,A. Collier Cameron,Will Clarkson,B. Enoch,Carole A. Haswell,Coel Hellier,Keith Horne,Yogesh C. Joshi,Stephen R. Kane,Tim Lister,Pierre F. L. Maxted,N. R. Parley,Don Pollacco,Barry Smalley,Rachel Street,Ian Todd,Peter J. Wheatley,D. M. Wilson +19 more
TL;DR: The first public data release (DR1) of the WASP archive makes available all the light curve data and images from 2004 up to 2008 in both the Northern and Southern hemispheres.
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