Show simple item record

dc.contributor.authorBeamin, J.C.
dc.contributor.authorMinniti, D.
dc.contributor.authorPullen, J. B.
dc.contributor.authorIvanov, Valentin D.
dc.contributor.authorBendek, E.
dc.contributor.authorBayo, A.
dc.contributor.authorGromadzki, M.
dc.contributor.authorKurtev, R.
dc.contributor.authorLucas, P. W.
dc.contributor.authorButler, R. P.
dc.date.accessioned2018-01-30T22:29:34Z
dc.date.available2018-01-30T22:29:34Z
dc.date.issued2017-12-21
dc.identifier.citationBeamin , J C , Minniti , D , Pullen , J B , Ivanov , V D , Bendek , E , Bayo , A , Gromadzki , M , Kurtev , R , Lucas , P W & Butler , R P 2017 , ' Searching for Faint Comoving Companions to the α Centauri system in the VVV Survey Infrared Images ' , Monthly Notices of the Royal Astronomical Society , vol. 472 , no. 4 , pp. 3952-3958 . https://doi.org/10.1093/mnras/stx2144
dc.identifier.issn0035-8711
dc.identifier.otherPURE: 12532642
dc.identifier.otherPURE UUID: 92f54dc8-2af9-4201-84e7-29f0dedc0750
dc.identifier.otherArXiv: http://arxiv.org/abs/1708.05365v1
dc.identifier.otherScopus: 85042612282
dc.identifier.urihttp://hdl.handle.net/2299/19668
dc.descriptionThis article has been accepted for publication in Monthly Notices of the Royal Astronomical Society. © 2017 Crown Copyright. Published by Oxford University Press on behalf of the Royal Astronomical Society. All rights reserved.
dc.description.abstractThe VVV survey has observed the southern disk of the Milky Way in the near infrared, covering 240 deg$^{2}$ in the $ZYJHK_S$ filters. We search the VVV Survey images in a $\sim$19 deg$^{2}$ field around $\alpha$ Centauri, the nearest stellar system to the Sun, to look for possible overlooked companions that the baseline in time of VVV would be able to uncover. The photometric depth of our search reaches $Y\sim$19.3 mag, $J\sim$19 mag, and $K_S\sim$17 mag. This search has yielded no new companions in $\alpha$ Centauri system, setting an upper mass limit for any unseen companion well into the brown dwarf/planetary mass regime. The apparent magnitude limits were turned into effective temperature limits, and the presence of companion objects with effective temperatures warmer than 325K can be ruled out using different state-of-the-art atmospheric models. These limits were transformed into mass limits using evolutionary models, companions with masses above 11 M$_{Jup}$ were discarded, extending the constraints recently provided in the literature up to projected distances of den
dc.format.extent7
dc.language.isoeng
dc.relation.ispartofMonthly Notices of the Royal Astronomical Society
dc.rights/dk/atira/pure/core/openaccesspermission/open
dc.subjectastro-ph.SR
dc.subjectastro-ph.EP
dc.titleSearching for Faint Comoving Companions to the α Centauri system in the VVV Survey Infrared Imagesen
dc.contributor.institutionCentre for Astrophysics Research
dc.contributor.institutionSchool of Physics, Astronomy and Mathematics
dc.description.statusPeer reviewed
dc.relation.schoolSchool of Physics, Astronomy and Mathematics
dc.description.versiontypeFinal Published version
dcterms.dateAccepted2017-08-15
rioxxterms.versionAM
rioxxterms.versionVoR
rioxxterms.versionofrecordhttps://doi.org/10.1093/mnras/stx2144
rioxxterms.typeJournal Article/Review
herts.preservation.rarelyaccessedtrue
herts.rights.accesstypeopenAccess


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record