J/ApJ/864/57ivo://CDS.VizieR/J/ApJ/864/57doi:10.26093/cds/vizier.18640057CDSMagurno D.Sneden C.Braga V.F.Bono G.Mateo M.Persson S.E.,Dall'Ora M.Marengo M.Monelli M.Neeley J.R.2019-12-02T08:42:07Z2019-09-23T07:56:51ZCDS support team

CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France

cds-question@unistra.frchemical-abundancesvariable-starsglobular-star-clustersradial-velocityWe present a detailed spectroscopic analysis of horizontal branch stars in the globular cluster NGC 3201. We collected optical (4580-5330{AA}), high-resolution (~34000), high signal-to-noise ratio (~200) spectra for 11 RR Lyrae stars and one red horizontal branch star with the multifiber spectrograph M2FS with the 6.5m Magellan telescope at the Las Campanas Observatory. From measured equivalent widths, we derived atmospheric parameters and abundance ratios for {alpha} (Mg, Ca and Ti), iron-peak (Sc, Cr, Ni and Zn), and s-process (Y) elements. We found that NGC 3201 is a homogeneous, monometallic ([Fe/H]=-1.47+/-0.04), {alpha}-enhanced ([{alpha}/Fe]=0.37+/-0.04) cluster. The relative abundances of the iron-peak and s-process elements were found to be consistent with solar values. In comparison with other large stellar samples, NGC 3201 RR Lyraes have similar chemical enrichment histories as do those of other old (t>=10Gyr) Halo components (globular clusters; red giants; blue and red horizontal branch stars; and RR Lyraes). We also provided a new average radial velocity estimate for NGC 3201 by using a template velocity curve to overcome the limit of single-epoch measurements of variable stars: Vrad=494+/-2km/s ({sigma}=8km/s).2018ApJ...864...57Mhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/864/57CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/AJ/108/1016 : Kinematics of local RR lyrae stars. I. (Layden, 1994)J/AJ/110/2319 : Abundances in RR Lyr variables (Clementini+ 1995)J/A+AS/121/95 : Giant stars abundances in 24 clusters (Carretta+ 1997)J/AJ/124/1464 : Variable stars in Andromeda VI (Pritzl+, 2002)J/ApJ/617/1091 : La and Eu abundances in 85 stars (Simmerer+, 2004)J/AJ/130/2140 : Abundances & velocities in globular clusters (Pritzl+, 2005)J/MNRAS/367/1329 : Elemental abundances for 176 stars (Reddy+, 2006)J/ApJ/667/1267 : CrI transition probabilities (Sobeck+, 2007)J/A+A/505/139 : Abundances of red giants in 17 GCs (Carretta+, 2009)J/AcA/59/1 : VI light curves of LMC RR Lyrae stars (Soszynski+, 2009)J/ApJ/712/L21 : Calcium abundances in 17 globular clusters (Carretta+, 2010)J/AJ/140/1694 : Abundances of non-variable red & blue HB stars (For+, 2010)J/AN/331/474 : Abundances of metal-poor stars (Frebel, 2010)J/ApJS/197/29 : Chemical compositions of 11 RR Lyrae (For+, 2011)J/AJ/141/90 : SEGUE stellar parameter pipeline. V. (Lee+, 2011)J/MNRAS/427/3374 : QUEST RR Lyrae Survey III. Low Gal. latitude (Mateu+, 2012)J/MNRAS/422/89 : Cetus dSph RR Lyrae (Monelli+, 2012)J/AJ/144/114 : Radial velocities of 6 field RR Lyrae (Sesar+, 2012)J/ApJ/763/32 : Galactic halo RRab stars from CSS (Drake+, 2013)J/ApJS/208/27 : Sun and HD 84937 TiII log(gf) and abundances (Wood+, 2013)J/ApJS/213/31 : Blazhko effect from 4yr of Kepler data (Benko+, 2014)J/ApJS/215/23 : FeI branching fractions (Den Hartog+, 2014)J/ApJ/782/59 : Abundances of 8 RR Lyrae subclass C var. stars (Govea+, 2014)J/MNRAS/441/3127 : FeI oscillator strengths for Gaia-ESO (Ruffoni+, 2014)J/ApJ/788/48 : X-ray through NIR photometry of NGC 2617 (Shappee+, 2014)J/PASP/126/521 : UBVRIJHK photometry of RR Lyrae in M4 (Stetson+, 2014)J/ApJS/211/20 : NiI transition probability measurements (Wood+, 2014)J/ApJ/801/69 : Iron EWs for NGC3201 giant star members (Mucciarelli+, 2015)J/MNRAS/447/2404 : Equivalent width of 21 RR Lyrae stars (Pancino+, 2015)J/MNRAS/446/2251 : Southern Catalina Survey type-ab RR Lyrae (Torrealba+, 2015)J/MNRAS/462/4349 : Variable stars in Sculptor dSph (Martinez-Vazquez+, 2016)J/ApJS/228/10 : Transition probabilities for Cr II lines (Lawler+, 2017)J/ApJ/842/60 : Var. stars in Logal Group galaxies. III. (Monelli+, 2017)J/ApJ/841/84 : Theoretical framework for RR Lyrae. II. MIR (Neeley+, 2017)J/ApJ/848/68 : Abundances & RVs of stable & Blazhko RRc stars (Sneden+, 2017)J/AJ/155/137 : RRLs in GCs. V.{omega} Centauri NIR photom. (Braga+, 2018)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/864/57https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/864/57http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/864/57https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/864/57https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/864/57http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/864/57GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/864/57/members (NGC 3201 star parameters (Tables 1 and 2))https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/864/57/members?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/864/57/members?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/864/57/members?GETtext/xml+votable180.050000true154.4769583-46.42372220.005555555555555556Cone search capability for table J/ApJ/864/57/table10 (Iron and alpha-elements abundances of high-resolution field RRLs (138 stars))https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/864/57/table10?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/864/57/table10?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/864/57/table10?GETtext/xml+votable180.050000true309.5628175-2.89028190.0055555555555555566/110 1663 2089 2238 2484 4479 4762 6301 7174 7518 8323 8466 9138 9769 10541 10584 10602 10898 11098 11961 12512 12696 12743 13171 13680 14581 14582 14730 14731 14734 14735 14746 14777 14782 14918 14925 14935 14939 14942 14952 14953 14956 14960 14961 14967 14971 14994 15057 15106 15119 15120 15121 15136 15141 15148 15149 15156 15220 15281 15714 16018 16867 16923 17158 17328 17745 18177 19110 19333 20097 20303 21182 24724 24913 25060 25120 25199 25768 25803 25879 25953 26281 26288 26807 26981 27148 27333 27824 28155 28582 30019 30868 30923 31390 31498 31743 32254 32636 32663 33465 34537 35151 35423 35686 36535 36704 38456 38465 38809 39152 40475 40767 40924 40952 40988 40998 41022 41260 44914 44991 45337 45994 46069 46482 46686 46705 47342 47467 48113 48228 48715 48916https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/864/57?format=asciidefaultJ/ApJ/864/57/membersNGC 3201 star parameters (Tables 1 and 2)SimbadNameSimbad column added by the CDSmeta.idcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIDRRab star identifiermeta.id;meta.maincharRAJ2000Hour of right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Degree of declination (J2000)pos.eq.dec;meta.mainPer[0.5/0.7]? Perioddtime.perioddoublenullableHJD[7079.7/7079.8] Heliocentric Julian Date; HJD-2450000dtime.epochdoubleHJD0[4123/7961.2]? Heliocentric Julian Date; JD-2450000dtime.epochdoublenullablePhase[0.09/0.9]? Phasetime.phasefloatnullableTypeRR Lyrae type (always "RRab")meta.notecharf_Typeb = Blazhkometa.codecharVmag[13.8/15] Mean V-band magnitudemagphot.mag;em.opt.VfloatVamp[0.4/1.3]? V-band amplitudemagphot.mag;em.opt.VfloatnullableRefReference(s) (1)meta.ref;pos.framecharRV[463.5/520.5] Radial velocitykm/sphys.veloc;pos.heliocentricfloate_RV[0.3/1.2] RV uncertaintykm/sstat.errorfloatVgamma[477/505] Integral average velocity along the pulsation cyclekm/sphys.veloc;stat.meaninte_Vgamma[8/8] V_{gamma}_ uncertaintykm/sstat.errorintTeff[5600/7500] Effective temperatureKphys.temperature.effectiveinte_Teff[100/300] Teff uncertaintyKstat.error;phys.temperature.effectiveintlogg[2.1/3.3] Log of surface gravitylog(cm.s**-2)phys.gravityfloate_logg[0.1/0.4] logg uncertaintylog(cm.s**-2)stat.errorfloatVt[2.2/3.6] Microturbulencekm/sphys.veloc.microTurbfloate_Vt[0.1/0.4] Vt uncertaintykm/sstat.errorfloat[M/H][-1.8/-1.2] Metallicitylog(Sun)phys.abund.Zfloate_[M/H][0.1/0.1] [M/H] uncertaintylog(Sun)stat.error;phys.abundfloatJ/ApJ/864/57/table10Iron and alpha-elements abundances of high-resolution field RRLs (138 stars)recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintADisplay other abundances for this star (link to Table 11)meta.ref.urlcharNameStar namemeta.id;meta.maincharprimary[Fe/H][-2.9/0.2] Iron abundancelog(Sun)phys.abund.Fefloat[Mg/Fe][-0.05/0.9]? Magnesium over iron abundancelog(Sun)phys.abund.Fefloatnullable[Ca/Fe][-0.2/0.6]? Calcium over iron abundancelog(Sun)phys.abund.Fefloatnullable[Ti/Fe][-0.5/0.8]? Titanium over iron abundancelog(Sun)phys.abund.FefloatnullableRefReference paper (G1)meta.bibcharSimbadSimbad column added by the CDSmeta.ref.urlchar_RARight Ascension (J2000) from SIMBAD (not part of the original data)degpos.eq.ra;meta.main_DEDeclination (J2000) from SIMBAD (not part of the original data)degpos.eq.dec;meta.mainJ/ApJ/864/57/table11Iron peak and s-process elements abundances of high-resolution field RRLs (88 stars)RefReference paper (G1)meta.bibcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameStar namemeta.id;meta.mainchar[Sc/Fe][-0.8/0.5]? Scandium over iron abundancelog(Sun)phys.abundfloatnullable[Cr/Fe][-0.3/0.4]? Chromium over iron abundancelog(Sun)phys.abundfloatnullable[Ni/Fe][-0.2/0.9]? Nickel over iron abundancelog(Sun)phys.abundfloatnullable[Zn/Fe][-0.2/0.6]? Zinc over iron abundancelog(Sun)phys.abundfloatnullable[Y/Fe][-0.8/0.5]? Yttrium over iron abundancelog(Sun)phys.abundfloatnullable