Show simple item record

dc.contributor.authorBarnes, John
dc.contributor.authorAnglada Escude, Guillem
dc.contributor.authorTuomi, Mikko
dc.contributor.authorJones, Hugh
dc.contributor.authorFeng, F.
dc.contributor.authorJeffers, S. V.
dc.contributor.authorHaswell, C. A.
dc.contributor.authorJenkins, J. S.
dc.contributor.authorPetit, P.
dc.date.accessioned2017-04-03T15:23:48Z
dc.date.available2017-04-03T15:23:48Z
dc.date.issued2017-04-01
dc.identifier.citationBarnes , J , Anglada Escude , G , Tuomi , M , Jones , H , Feng , F , Jeffers , S V , Haswell , C A , Jenkins , J S & Petit , P 2017 , ' Recovering planet radial velocity signals in the presence of starspot activity in fully convective stars ' , Monthly Notices of the Royal Astronomical Society , vol. 466 , no. 2 , pp. 1733-1740 . https://doi.org/10.1093/mnras/stw3170
dc.identifier.issn1365-2966
dc.identifier.otherPURE: 11083379
dc.identifier.otherPURE UUID: f7786071-3b26-47f6-9096-c63bc8423230
dc.identifier.otherORCID: /0000-0001-6039-0555/work/44703126
dc.identifier.otherScopus: 85046660683
dc.identifier.urihttp://hdl.handle.net/2299/17747
dc.descriptionJ. R. Barnes, et al, 'Recovering planet radial velocity signals in the presence of starspot activity in fully convective stars', MNRAS, Vol. 466 (2): 1733-1740, first published online 10 December 2016. The version of record is availalbe online at doi: 10.1093/mnras/stw3170 © 2016 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society
dc.description.abstractAccounting for stellar activity is a crucial component of the search for ever-smaller planets orbiting stars of all spectral types. We use Doppler imaging methods to demonstrate that starspot-induced radial velocity variability can be effectively reduced for moderately rotating, fully convective stars. Using starspot distributions extrapolated from sunspot observations, we adopt typical M dwarf starspot distributions with low contrast spots to synthesize line profile distortions. The distortions are recovered using maximum entropy regularized fitting and the corresponding stellar radial velocities are measured. The procedure is demonstrated that for a late-M star harbouring an orbiting planet in the habitable zone. The technique is effective for stars with v sin i = 1-10km s-1, reducing the stellar noise contribution by factors of nearly an order of magnitude. With a carefully chosen observing strategy, the technique can be used to determine the stellar rotation period and is robust to uncertainties such as unknown stellar inclination. While demonstrated for late-type M stars, the procedure is applicable to all spectral types.en
dc.language.isoeng
dc.relation.ispartofMonthly Notices of the Royal Astronomical Society
dc.subjecttechniques: radial velocity
dc.subjecttechniques: spectroscopic
dc.subjectplanets and satellites : detection
dc.subjectstars: activity
dc.subjectstars: low mass
dc.titleRecovering planet radial velocity signals in the presence of starspot activity in fully convective starsen
dc.contributor.institutionSchool of Physics, Astronomy and Mathematics
dc.contributor.institutionCentre for Astrophysics Research
dc.description.statusPeer reviewed
rioxxterms.versionVoR
rioxxterms.versionofrecordhttps://doi.org/10.1093/mnras/stw3170
rioxxterms.typeJournal Article/Review
herts.preservation.rarelyaccessedtrue


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record