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dc.contributor.authorJackson, R. J.
dc.contributor.authorJeffries, R.D.
dc.contributor.authorLewis, J.
dc.contributor.authorKoposov, S. E.
dc.contributor.authorSacco, G. G.
dc.contributor.authorRandich, S.
dc.contributor.authorGilmore, G.
dc.contributor.authorAsplund, M.
dc.contributor.authorBinney, J.
dc.contributor.authorBonifacio, P.
dc.contributor.authorDrew, J.E.
dc.contributor.authorFeltzing, S.
dc.contributor.authorFerguson, A.M.N.
dc.contributor.authorMicela, G.
dc.contributor.authorNeguerela, I.
dc.contributor.authorPrusti, T.
dc.contributor.authorRix, H-W.
dc.contributor.authorVallenari, A.
dc.contributor.authorAlfaro, E. J.
dc.contributor.authorAllende Prieto, C.
dc.contributor.authorBabusiaux, C.
dc.contributor.authorBensby, T.
dc.contributor.authorBlomme, R.
dc.contributor.authorBragaglia, A.
dc.contributor.authorFlaccomio, E.
dc.contributor.authorFrancois, P.
dc.contributor.authorHambly, N.
dc.contributor.authorIrwin, M.
dc.contributor.authorKorn, A.J.
dc.contributor.authorLanzafame, A. C.
dc.contributor.authorPancino, E.
dc.contributor.authorRecio-Blanco, A.
dc.contributor.authorSmiljanic, R.
dc.contributor.authorVan Eck, S.
dc.contributor.authorWalton, N.
dc.contributor.authorBayo, A.
dc.contributor.authorBergemann, M.
dc.contributor.authorCarraro, G.
dc.contributor.authorCostado, M. T.
dc.contributor.authorDamiani, F.
dc.contributor.authorEdvardsson, B.
dc.contributor.authorFranciosini, E.
dc.contributor.authorFrasca, A.
dc.contributor.authorHeiter, U.
dc.contributor.authorHill, V.
dc.contributor.authorHourihane, A.
dc.contributor.authorJofré, P.
dc.contributor.authorLardo, C.
dc.contributor.authorDe Laverny, P.
dc.contributor.authorLind, K.
dc.contributor.authorMagrini, L.
dc.contributor.authorMarconi, G.
dc.contributor.authorMartayan, C.
dc.contributor.authorMasseron, T.
dc.contributor.authorMonaco, L.
dc.contributor.authorMorbidelli, L.
dc.contributor.authorPrisinzano, L.
dc.contributor.authorSbordone, L.
dc.contributor.authorSousa, S.G.
dc.contributor.authorWorley, C. C.
dc.contributor.authorZaggia, S.
dc.date.accessioned2015-09-07T13:28:48Z
dc.date.available2015-09-07T13:28:48Z
dc.date.issued2015-08
dc.identifier.citationJackson , R J , Jeffries , R D , Lewis , J , Koposov , S E , Sacco , G G , Randich , S , Gilmore , G , Asplund , M , Binney , J , Bonifacio , P , Drew , J E , Feltzing , S , Ferguson , A M N , Micela , G , Neguerela , I , Prusti , T , Rix , H-W , Vallenari , A , Alfaro , E J , Allende Prieto , C , Babusiaux , C , Bensby , T , Blomme , R , Bragaglia , A , Flaccomio , E , Francois , P , Hambly , N , Irwin , M , Korn , A J , Lanzafame , A C , Pancino , E , Recio-Blanco , A , Smiljanic , R , Van Eck , S , Walton , N , Bayo , A , Bergemann , M , Carraro , G , Costado , M T , Damiani , F , Edvardsson , B , Franciosini , E , Frasca , A , Heiter , U , Hill , V , Hourihane , A , Jofré , P , Lardo , C , De Laverny , P , Lind , K , Magrini , L , Marconi , G , Martayan , C , Masseron , T , Monaco , L , Morbidelli , L , Prisinzano , L , Sbordone , L , Sousa , S G , Worley , C C & Zaggia , S 2015 , ' The Gaia -ESO Survey : Empirical determination of the precision of stellar radial velocities and projected rotation velocities ' , Astronomy and Astrophysics , vol. 580 , A75 . https://doi.org/10.1051/0004-6361/201526248
dc.identifier.issn0004-6361
dc.identifier.otherPURE: 9172207
dc.identifier.otherPURE UUID: 13d96c8e-34d4-42a5-a73f-a2d77cb2e1c5
dc.identifier.otherScopus: 84938867148
dc.identifier.urihttp://hdl.handle.net/2299/16384
dc.description.abstractContext. The Gaia-ESO Survey (GES) is a large public spectroscopic survey at the European Southern Observatory Very Large Telescope. Aims. A key aim is to provide precise radial velocities (RVs) and projected equatorial velocities (v sin i) for representative samples of Galactic stars, which will complement information obtained by the Gaia astrometry satellite. Methods. We present an analysis to empirically quantify the size and distribution of uncertainties in RV and v sin i using spectra from repeated exposures of the same stars. Results. We show that the uncertainties vary as simple scaling functions of signal-to-noise ratio (S/N) and v sin i, that the uncertainties become larger with increasing photospheric temperature, but that the dependence on stellar gravity, metallicity and age is weak. The underlying uncertainty distributions have extended tails that are better represented by Student's t-distributions than by normal distributions. Conclusions. Parametrised results are provided, which enable estimates of the RV precision for almost all GES measurements, and estimates of the v sin i precision for stars in young clusters, as a function of S/N, v sin i and stellar temperature. The precision of individual high S/N GES RV measurements is 0.22-0.26 kms<sup>-1</sup>, dependent on instrumental configuration.en
dc.format.extent13
dc.language.isoeng
dc.relation.ispartofAstronomy and Astrophysics
dc.rights/dk/atira/pure/core/openaccesspermission/open
dc.subjectOpen clusters and associations: general
dc.subjectStars: kinematics and dynamics
dc.subjectAstronomy and Astrophysics
dc.titleThe Gaia -ESO Survey : Empirical determination of the precision of stellar radial velocities and projected rotation velocitiesen
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
dc.description.versiontypeFinal Accepted Version
dcterms.dateAccepted2015-05-25
rioxxterms.versionAM
rioxxterms.versionofrecordhttps://doi.org/10.1051/0004-6361/201526248
rioxxterms.typeJournal Article/Review
herts.preservation.rarelyaccessedtrue
herts.rights.accesstypeopenAccess


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