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dc.contributor.authorGalvez-Ortiz, M. C.
dc.contributor.authorClarke, J.R.A.
dc.contributor.authorPinfield, D.J.
dc.contributor.authorJenkins, J. S.
dc.contributor.authorFolkes, S. L.
dc.contributor.authorGarcia Perez, A. E.
dc.contributor.authorDay-Jones, A.C.
dc.contributor.authorBurningham, B.
dc.contributor.authorJones, H.R.A.
dc.contributor.authorBarnes, J. R.
dc.contributor.authorPokorny, R.S.
dc.date.accessioned2011-05-25T14:21:21Z
dc.date.available2011-05-25T14:21:21Z
dc.date.issued2010
dc.identifier.citationGalvez-Ortiz , M C , Clarke , J R A , Pinfield , D J , Jenkins , J S , Folkes , S L , Garcia Perez , A E , Day-Jones , A C , Burningham , B , Jones , H R A , Barnes , J R & Pokorny , R S 2010 , ' Spectroscopy and kinematics of low-mass members of young moving groups ' , Monthly Notices of the Royal Astronomical Society , vol. 409 , no. 2 , pp. 552-566 . https://doi.org/10.1111/j.1365-2966.2010.17361.x
dc.identifier.issn0035-8711
dc.identifier.otherPURE: 158883
dc.identifier.otherPURE UUID: beabf0d5-063f-4b8a-97ca-d11483151a58
dc.identifier.otherdspace: 2299/5825
dc.identifier.otherWOS: 000284282300008
dc.identifier.otherScopus: 78449247493
dc.identifier.urihttp://hdl.handle.net/2299/5825
dc.descriptionOriginal article can be found at: http://onlinelibrary.wiley.com/ Copyright Royal Astronomical Society
dc.description.abstractWe study a target sample of 68 low-mass objects (with spectral types in the range M4.5–L1) previously selected via photometric and astrometric criteria, as possible members of five young moving groups: the Local Association (Pleiades moving group, age = 20–150 Myr), the Ursa Mayor group (Sirius supercluster, age = 300 Myr), the Hyades supercluster (age = 600 Myr), IC 2391 supercluster (age = 35–55 Myr) and the Castor moving group (age = 200 Myr). In this paper, we assess their membership by using different kinematic and spectroscopic criteria. We use high-resolution echelle spectroscopic observations of the sample to measure accurate radial velocities. Distances are calculated and compared to those of the moving group from the literature, we also calculate the kinematic Galactic components (U,V,W) of the candidate members and apply kinematic criterion of membership to each group. In addition, we measure rotational velocities (v sin i) to place further constraints on membership of kinematic members. We find that 49 targets have young disc kinematics and that 36 of them possibly belong to one of our five moving groups. From the young disc target objects, 31 have rotational velocities in agreement with them belonging to the young disc population. We also find that one of our moving group candidates, 2MASS0123−3610, is a low-mass double lined spectroscopic binary, with probable spectral types around M7.en
dc.format.extent15
dc.language.isoeng
dc.relation.ispartofMonthly Notices of the Royal Astronomical Society
dc.rightsOpen
dc.subjectbrown dwarfs
dc.subjectstars: kinematics and dynamics
dc.subjectstars: low-mass
dc.subjectURSA-MAJOR GROUP
dc.subjectNEAR-INFRARED SPECTRA
dc.subjectBROWN DWARF LP-944-20
dc.subjectMAIN-SEQUENCE STARS
dc.subjectSOLAR-TYPE STARS
dc.subjectL FIELD DWARFS
dc.subjectULTRACOOL DWARFS
dc.subjectWIDE BINARIES
dc.subjectROTATIONAL VELOCITIES
dc.subjectEVOLUTIONARY MODELS
dc.titleSpectroscopy and kinematics of low-mass members of young moving groupsen
dc.contributor.institutionSchool of Physics, Astronomy and Mathematics
dc.contributor.institutionScience & Technology Research Institute
dc.contributor.institutionCentre for Astrophysics Research
dc.description.statusPeer reviewed
dc.relation.schoolSchool of Physics, Astronomy and Mathematics
dcterms.dateAccepted2010
rioxxterms.versionofrecordhttps://doi.org/10.1111/j.1365-2966.2010.17361.x
rioxxterms.typeJournal Article/Review
herts.preservation.rarelyaccessedtrue
herts.rights.accesstypeOpen


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