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Efficient identification of exoplanetary transit candidates from SuperWASP light curves
Cameron, AC1; Wilson, DM2; West, RG3; Hebb, L1; Wang XB(王晓彬)1,4; Aigrain, S5; Bouchy, F6; Christian, DJ7; Clarkson, WI8; Enoch, B9; Esposito, M10; Guenther, E10; Haswell, CA9; Hebrard, G6; Hellier, C2; Horne, K1; Irwin, J11; Kane, SR12; Loeillet, B13; Lister, TA2,14; Maxted, P2; Mayor, M15; Moutou, C13; Parley, N9; Pollacco, D7; Pont, F15; Queloz, D15; Ryans, R7; Skillen, I16; Street, RA7,14,17; Udry, S15; Wheatley, PJ18; Cameron, AC (reprint author), Univ St Andrews, Sch Phys & Astron, St Andrews KY16 9SS, Fife, Scotland.
Source PublicationMONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
2007-09-21
Volume380Issue:3Pages:1230-1244
DOI10.1111/j.1365-2966.2007.12195.x
Contribution Rank第4完成单位
Indexed BySCI
KeywordMethods : Data Analysis Techniques : Photometric Planetary Systems
AbstractTransiting extrasolar planets constitute only a small fraction of the range of stellar systems found to display periodic, shallow dimmings in wide-field surveys employing small-aperture A camera arrays. Here we present an efficient selection strategy for follow-up observations, derived from analysis of the light curves of a sample of 67 SuperWASP targets that passed the selection tests we used in earlier papers, but which have subsequently been identified either as planet hosts or as astrophysical false positives. We determine the system parameters using Markov-chain Monte Carlo analysis of the SuperWASP light curves. We use 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. The Bayesian nature of the analysis allows us to quantify both the departure of the host star from the main-sequence mass-radius relation and the probability that the companion radius is less than 1.5 Jupiter radii. When augmented by direct fight-curve analyses that detect binaries with unequal primary and secondary eclipses, and objects with aperture blends that are resolved by SuperWASP, we find that only 13 of the original 67 stars, including the three known planets in the sample, would qualify for follow-up. This suggests that planet discovery 'hit rates' better than one-in-five should be achievable. In addition, the stellar binaries that qualify are likely to have astrophysically interesting stellar or substellar secondaries.
Language英语
Subject AreaAstronomy & Astrophysics
SubtypeArticle
ISSN0035-8711
URL查看原文
WOS IDWOS:000249844900033
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS KeywordEXTRASOLAR PLANET CANDIDATES ; HYDROGEN-BURNING LIMIT ; GIANT PLANET ; HOT JUPITERS ; FOLLOW-UP ; STAR ; RADIUS ; WASP-1B ; PROJECT ; SELECTION
Citation statistics
Cited Times:217[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ynao.ac.cn/handle/114a53/6787
Collection系外行星研究组
Corresponding AuthorCameron, AC (reprint author), Univ St Andrews, Sch Phys & Astron, St Andrews KY16 9SS, Fife, Scotland.
Affiliation1.School of Physics and Astronomy, University of St Andrews, North Haugh, St Andrews, Fife KY16 9SS
2.Astrophysics Group, Keele University, Staffordshire ST5 5BG
3.Department of Physics and Astronomy, University of Leicester, Leicester LE1 7RH
4.National Astronomical Observatories/Yunnan Observatory, Chinese Academy of Sciences, Kunming, China
5.School of Physics, University of Exeter, Stocker Road, Exeter EX4 4QL
6.Institut d'Astrophysique de Paris, CNRS (UMR 7095) – Université Pierre & Marie Curie, 98bis bvd Arago, 75014 Paris, France
7.ARC, Main Physics Building, School of Mathematics & Physics, Queen's University, University Road, Belfast BT7 1NN
8.STScI, 3700 San Martin Drive, Baltimore, MD 21218, USA
9.Department of Physics and Astronomy, The Open University, Milton Keynes MK7 6AA
10.Thüringer Landessternwarte Tautenburg, Karl-Schwarzschild-Observatorium, D-07778 Tautenburg, Germany
11.Institute of Astronomy, University of Cambridge, Madingley Road, Cambridge CB3 0HA
12.Department of Astronomy, University of Florida, 211 Bryant Space Science Center, Gainesville, FL 32611-2055, USA
13.Laboratoire d'Astrophysique de Marseille, BP 8, 13376 Marseille Cedex 12, France
14.Las Cumbres Observatory, 6740B Cortona Drive, Goleta, CA 93117, USA
15.Observatoire de Genève, Université de Genève, 51 Ch des Maillettes, 1290 Sauverny, Switzerland
16.Isaac Newton Group of Telescopes, Apartado de Correos 321, E-38700 Santa Cruz de la Palma, Tenerife, Spain
17.Department of Physics, Broida Hall, University of California, Santa Barbara, CA 93106-9530, USA
18.Department of Physics, University of Warwick, Coventry CV4 7AL
Recommended Citation
GB/T 7714
Cameron, AC,Wilson, DM,West, RG,et al. Efficient identification of exoplanetary transit candidates from SuperWASP light curves[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2007,380(3):1230-1244.
APA Cameron, AC.,Wilson, DM.,West, RG.,Hebb, L.,Wang XB.,...&Cameron, AC .(2007).Efficient identification of exoplanetary transit candidates from SuperWASP light curves.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,380(3),1230-1244.
MLA Cameron, AC,et al."Efficient identification of exoplanetary transit candidates from SuperWASP light curves".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 380.3(2007):1230-1244.
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