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Disentangling planetary orbits from stellar activity in radial-velocity surveys

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dc.contributor.authorHaywood, R.D.
dc.contributor.authorCameron, A.C.
dc.contributor.authorQueloz, D.
dc.contributor.authorBarros, S.C.C.
dc.contributor.authorDeleuil, M.
dc.contributor.authorFares, R.
dc.contributor.authorGillon, M.
dc.contributor.authorHatzes, A.
dc.contributor.authorLanza, A.F.
dc.contributor.authorLovis, C.
dc.contributor.authorMoutou, C.
dc.contributor.authorPepe, F.
dc.contributor.authorPollacco, D.
dc.contributor.authorSanterne, A.
dc.contributor.authorSégransan, D.
dc.contributor.authorUnruh, Y.
dc.date.accessioned2015-03-31T23:02:24Z
dc.date.available2015-03-31T23:02:24Z
dc.date.issued2014-04-01
dc.identifier145525168
dc.identifier44689502-0b0a-4dad-a40d-208b6bc6e958
dc.identifier84898724333
dc.identifier000333749700007
dc.identifier.citationHaywood , R D , Cameron , A C , Queloz , D , Barros , S C C , Deleuil , M , Fares , R , Gillon , M , Hatzes , A , Lanza , A F , Lovis , C , Moutou , C , Pepe , F , Pollacco , D , Santerne , A , Ségransan , D & Unruh , Y 2014 , ' Disentangling planetary orbits from stellar activity in radial-velocity surveys ' , International Journal of Astrobiology , vol. 13 , no. 2 , pp. 155-157 . https://doi.org/10.1017/S147355041300044Xen
dc.identifier.issn1473-5504
dc.identifier.otherORCID: /0000-0002-8863-7828/work/58531435
dc.identifier.urihttps://hdl.handle.net/10023/6416
dc.description.abstractThe majority of extra-solar planets have been discovered (or confirmed after follow-up) through radial-velocity (RV) surveys. Using ground-based spectrographs such as High Accuracy Radial Velocity Planetary Search (HARPS) and HARPS-North, it is now possible to detect planets that are only a few times the mass of the Earth. However, the presence of dark spots on the stellar surface produces RV signals that are very similar in amplitude to those caused by orbiting low-mass planets. Disentangling these signals has thus become the biggest challenge in the detection of Earth-mass planets using RV surveys. To do so, we use the star's lightcurve to model the RV variations produced by spots. Here we present this method and show the results of its application to CoRoT-7.
dc.format.extent3
dc.format.extent266826
dc.language.isoeng
dc.relation.ispartofInternational Journal of Astrobiologyen
dc.subjectAstronomyen
dc.subjectDetection of Earth-mass planetsen
dc.subjectStellar activityen
dc.subjectStudy of individual planetary systems: CoRoT-7en
dc.subjectTechniques: radial velocitiesen
dc.subjectQB Astronomyen
dc.subjectQC Physicsen
dc.subject.lccQBen
dc.subject.lccQCen
dc.titleDisentangling planetary orbits from stellar activity in radial-velocity surveysen
dc.typeJournal articleen
dc.contributor.sponsorScience & Technology Facilities Councilen
dc.contributor.sponsorScience & Technology Facilities Councilen
dc.contributor.institutionUniversity of St Andrews. School of Physics and Astronomyen
dc.identifier.doi10.1017/S147355041300044X
dc.description.statusPeer revieweden
dc.date.embargoedUntil2015-04-01
dc.identifier.grantnumberST/J001651/1en
dc.identifier.grantnumberPP/F000065/1en


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