Looking for giant earths in the HD 209458 system: a search for transits in MOST space-based photometry

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dc.creator Guenther, David B.
dc.creator Croll, Bryce
dc.creator Matthews, Jaymie M.
dc.creator Rowe, Jason F.
dc.creator Kuschnig, Rainer
dc.creator Walker, Andrew
dc.creator Gladman, Brett
dc.creator Sasselov, Dimitar
dc.creator Cameron, Chris
dc.creator Walker, Gordon A. H.
dc.date.accessioned 2014-11-06T15:35:55Z
dc.date.available 2014-11-06T15:35:55Z
dc.date.issued 2007-04
dc.identifier.issn 0004-637X
dc.identifier.issn 1538-4357
dc.identifier.uri http://library2.smu.ca/xmlui/handle/01/25902
dc.description Publisher's version/PDF en_CA
dc.description.abstract We have made a comprehensive transit search for exoplanets down to about 2 Earth radii in the HD 209458 system, based on nearly uninterrupted broadband optical photometry obtained with the MOST (Microvariability and Oscillations of Stars) satellite, spanning 14 days in 2004 and 44 days in 2005. We have searched these data for limb-darkened transits at periods other than that of the known giant planet, from about 0.5 days to 2 weeks. Monte Carlo statistical tests of the data with synthetic transits inserted allow us to rule out additional close-in exoplanets with sizes ranging from about 0.20-0.36 R[subscript J] (Jupiter radii), or 2.2-4.0 R[cross within a circle] (Earth radii) on orbits whose planes are near that of HD 209458b. These null results constrain theories that invoke lower mass planets in orbits similar to HD 209458b to explain its anomalously large radius, and those that predict ‘‘hot Earths’’ due to the inward migration of HD 209458b. en_CA
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dc.description.provenance Made available in DSpace on 2014-11-06T15:35:55Z (GMT). No. of bitstreams: 1 Guenther_David_B_article_2007.pdf: 8192219 bytes, checksum: cc03bd2dfcdd3147086a19efcc8f373f (MD5) Previous issue date: 2007-04 en
dc.language.iso en en_CA
dc.publisher American Astronomical Society en_CA
dc.relation.uri http://dx.doi.org/10.1086/511521
dc.rights Article is made available in accordance with the publisher’s policy and is subject to copyright law. Please refer to the publisher’s site. Any re-use of this article is to be in accordance with the publisher’s copyright policy. This posting is in no way granting any permission for re-use to the reader/user.
dc.subject.lcsh Extrasolar planets -- Detection
dc.subject.lcsh Transits
dc.title Looking for giant earths in the HD 209458 system: a search for transits in MOST space-based photometry en_CA
dc.type Text en_CA
dcterms.bibliographicCitation Astrophysical Journal 658, 1328-1339. (2007) en_CA
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Article is made available in accordance with the publisher’s policy and is subject to copyright law. Please refer to the publisher’s site. Any re-use of this article is to be in accordance with the publisher’s copyright policy. This posting is in no way granting any permission for re-use to the reader/user.
 
Published Version: http://dx.doi.org/10.1086/511521
 
 

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