The Gaia-ESO Survey: Empirical determination of the precision of stellar radial velocities and projected rotation velocities

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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.authorPrieto, C. Allende
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.authorJofre, 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.accessioned2024-01-10T14:21:59Z
dc.date.available2024-01-10T14:21:59Z
dc.date.issued2015
dc.description.abstractContext. The Gaia-ESO Survey (GES) is a large public spectroscopic survey at the European Southern Observatory Very Large Telescope.
dc.description.abstractAims. 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.
dc.description.abstractMethods. 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.
dc.description.abstractResults. 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.
dc.description.abstractConclusions. 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 km s(-1), dependent on instrumental configuration.
dc.description.funderUK Science and Technology Facilities Council
dc.description.funderLa Silla Paranal Observatory
dc.description.funderEuropean Union through ERC
dc.description.funderLeverhulme Trust
dc.description.funderINAF
dc.description.funderMinistero dell' Istruzione, dell' Universita' e della Ricerca (MIUR)
dc.description.funderESF (European Science Foundation) through the GREAT Research Network Programme
dc.description.funderScience and Technology Facilities Council
dc.description.funderUK Space Agency
dc.fechaingreso.objetodigital2024-05-02
dc.format.extent13 páginas
dc.fuente.origenWOS
dc.identifier.doi10.1051/0004-6361/201526248
dc.identifier.issn1432-0746
dc.identifier.urihttps://doi.org/10.1051/0004-6361/201526248
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/79834
dc.identifier.wosidWOS:000360020200075
dc.information.autorucAstrofísica;Sbordone L;S/I;243032
dc.language.isoen
dc.nota.accesocontenido parcial
dc.publisherEDP SCIENCES S A
dc.revistaASTRONOMY & ASTROPHYSICS
dc.rightsacceso restringido
dc.subjectstars: kinematics and dynamics
dc.subjectopen clusters and associations: general
dc.subjectLITHIUM DEPLETION BOUNDARY
dc.subjectGAMMA VELORUM
dc.subjectPOPULATION
dc.subjectKINEMATICS
dc.subjectPARAMETERS
dc.subjectSTARS
dc.subjectDWARF
dc.subject.ods11 Sustainable Cities and Communities
dc.subject.odspa11 Ciudades y comunidades sostenibles
dc.titleThe Gaia-ESO Survey: Empirical determination of the precision of stellar radial velocities and projected rotation velocities
dc.typeartículo
dc.volumen580
sipa.codpersvinculados243032
sipa.indexWOS
sipa.indexScopus
sipa.trazabilidadCarga SIPA;09-01-2024
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