J/AJ/154/113ivo://CDS.VizieR/J/AJ/154/113doi:10.26093/cds/vizier.51540113CDSTucker E.Walker M.G.Mateo M.Olszewski E.W.Bailey J.I.Crane J.D.,Shectman S.A.2019-08-20T07:19:28Z2018-02-08T09:38:40ZCDS support team

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

cds-question@unistra.frgalaxy-clustersgalaxiesspectroscopymetallicitychemical-abundancesgalaxy-kinematicsWe report the results of a pilot program to use the Magellan/M2FS spectrograph to survey the galactic populations and internal kinematics of galaxy clusters. For this initial study, we present spectroscopic measurements for 223 quiescent galaxies observed along the line of sight of the galaxy cluster Abell 267 (z~0.23). We develop a Bayesian method for modeling the integrated light from each galaxy as a simple stellar population, with free parameters that specify the redshift (v_los_/c) and characteristic age, metallicity ([Fe/H]), alpha-abundance ([{alpha}/Fe]), and internal velocity dispersion ({sigma}_int_) for individual galaxies. Parameter estimates derived from our 1.5hr observation of A267 have median random errors of {sigma}_Vlos_=20km/s, {sigma}_Age_=1.2Gyr, {sigma}_[Fe/H]_=0.11dex, {sigma}_[{alpha}/Fe]_=0.07dex, and {sigma}_{sigma}int_=20km/s. In a companion paper, we use these results to model the structure and internal kinematics of A267.2017AJ....154..113Thttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/154/113CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toV/147 : The SDSS Photometric Catalogue, Release 12 (Alam+, 2015)J/ApJ/819/53 : Magellan/M2FS spectroscopy of Tucana 2 & Grus 1 (Walker+, 2016)J/ApJ/797/106 : Redshifts in nine galaxy cluster fields (Hwang+, 2014)J/ApJ/767/15 : Hectospec Cluster Survey (HeCS) (Rines+, 2013)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/154/113https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/154/113http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/154/113https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/154/113https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/154/113http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/154/113GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/AJ/154/113/table3 (Results for fitting of A267 spectra)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/154/113/table3?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/154/113/table3?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/154/113/table3?GETtext/xml+votable180.050000true28.30616671.01350.0055555555555555565/44602.381800341673347e-19 3.5010283109654867e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/AJ/154/113?format=asciidefaultJ/AJ/154/113/table3Results for fitting of A267 spectraSimbadNameSimbad column added by the CDSmeta.idcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSeq[1/223] Michigan/Magellan Fiber System (M2FS) target, sequential identifiermeta.noteintRAJ2000Hour of Right Ascension (J2000)pos.eq.ra;meta.mainDEJ2000Degree of Declination (J2000)pos.eq.dec;meta.mainrmag[18.8/21.1] SDSS r band magnitudemagphot.mag;em.opt.Rfloatimag[18.4/20.7] SDSS i band magnitudemagphot.mag;em.opt.IfloatS/N[0.6/32.2] Median spectral Signal-to-Noise per pixelstat.snrfloat<Vlos>[11012/133103] Mean Line-of-Sight velocity, solar rest frame (V_los_)km/sphys.veloc;pos.heliocentricinte_<Vlos>[7/45300] Uncertainty in <Vlos>km/sstat.errorint<Age>[0.4/14.8] Mean inferred ageGyrtime.age;stat.meanfloate_<Age>[0.2/5.2] Uncertainty in <Age>Gyrstat.error;time.agefloat<Fe/H>[-3.4/0.5] Mean metallicity relative to Sunlog(Sun)phys.abund.Fefloate_<Fe/H>[0.03/0.8] Uncertainty in <Fe/H>log(Sun)stat.error;phys.abund.Fefloat<a/Fe>[-0.1/0.8] Mean chemical abundance [{alpha}/Fe]phys.abundfloate_<a/Fe>[0.01/0.4] Uncertainty in <a/Fe>stat.error;phys.abundfloat<sigma>[28/437.6] Mean internal velocity dispersion {sigma}_int_km/sphys.veloc.dispersionfloate_<sigma>[3.1/121.2] Uncertainty in <sigma>km/sstat.errorfloatHeCSIndicates data in the Hectospec Cluster Survey (HeCS; Rines et al. 2013, Cat. J/ApJ/767/15) within 1.5''meta.ref.urlintnullableSloanDisplay the online SDSS data for the nearest objectmeta.ref.urlcharSDSSDisplay the SDSS DR9 (Adelman-McCarthy et al. 2012, Cat. V/139), and SDSS DR12 (Alam et al. 2015, Cat. V/147) data within 1.5''meta.ref.urlchar