J/AJ/159/46ivo://CDS.VizieR/J/AJ/159/46doi:10.26093/cds/vizier.51590046CDSKirby E.N.Gilbert K.M.Escala I.Wojno J.Guhathakurta P.,Majewski S.R.Beaton R.L.2022-09-12T06:40:55Z2020-04-02T09:52:33ZCDS support team

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

cds-question@unistra.frchemical-abundancesspectroscopygalaxiesgiant-starsradial-velocityinfrared-photometryvisible-astronomyphotometryWe present deep spectroscopy from Keck/DEIMOS (DEep Imaging Multi-Object Spectrograph) of Andromeda I, III, V, VII, and X, all of which are dwarf spheroidal satellites (dSphs) of M31. The sample includes 256 spectroscopic members across all five dSphs. We confirm previous measurements of the velocity dispersions and dynamical masses, and we provide upper limits on bulk rotation. Our measurements confirm that M31 satellites obey the same relation between stellar mass and stellar metallicity as Milky Way (MW) satellites and other dwarf galaxies in the Local Group. The metallicity distributions show trends with stellar mass that are similar to those of MW satellites, including evidence in massive satellites for external influence, like pre-enrichment or gas accretion. We present the first measurements of individual element ratios, like [Si/Fe], in the M31 system, as well as measurements of the average [{alpha}/Fe] ratio. The trends of [{alpha}/Fe] with [Fe/H] also follow the same galaxy mass-dependent patterns as MW satellites. Less massive galaxies have more steeply declining slopes of [{alpha}/Fe] that begin at lower [Fe/H]. Finally, we compare the chemical evolution of M31 satellites to M31's Giant Stellar Stream and smooth halo. The properties of the M31 system support the theoretical prediction that the inner halo is composed primarily of massive galaxies that were accreted early. As a result, the inner halo exhibits higher [Fe/H] and [{alpha}/Fe] than surviving satellite galaxies.2020AJ....159...46Khttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/159/46CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/AJ/128/1177 : Galactic stellar abundances (Venn+, 2004)J/AJ/131/2114 : Radial velocities in Fornax dSph (Walker+, 2006)J/ApJ/663/960 : Radial velocities of Leo I stars (Sohn+, 2007)J/MNRAS/383/183 : CaII triplet of RGB from VLT/FLAMES obs. (Battaglia+, 2008)J/ApJ/682/1217 : Abundances in red giants in 7 globular clusters (Kirby+,2008)J/ApJ/705/328 : Abundance measurements in Sculptor dSph (Kirby+, 2009)J/ApJ/706/599 : H{alpha} and UV SFR in the local volume (Lee+, 2009)J/ApJS/191/352 : Abundances stars of Milky Way dwarf satellites (Kirby+, 2010)J/A+A/523/A17 : Individual stars in Fornax dSph center (Letarte+, 2010)J/ApJ/751/46 : Spectroscopic observations in VV124 (UGC 4879) (Kirby+, 2012)J/AJ/144/4 : Properties of dwarf galaxies Local Group (McConnachie+, 2012)J/ApJ/752/45 : SPLASH: Stellar spectroscopy M31 satellites (Tollerud+, 2012)J/ApJ/768/172 : Kinematic analysis of red giant in M31 dSphs (Collins+, 2013)J/ApJ/779/102 : Metallicities of RGB stars in dwarf galaxies (Kirby+, 2013)J/A+A/572/A88 : Equivalent widths for Fornax RGB stars (Lemasle+, 2014)J/ApJ/790/73 : Iron & alpha abundance RGBs in M31 satellites (Vargas+, 2014)J/ApJ/789/147 : Star formation histories of LG dwarf galaxies (Weisz+, 2014)J/ApJ/798/77 : Metallicity of RGB stars in 6 M31 dwarf galaxies (Ho+, 2015)J/ApJ/833/167 : PAndAS view of Andromeda satellites. II. (Martin+, 2016)J/MNRAS/465/4180 : H{alpha} stars in M31 HST photometry (Prichard+, 2017)J/ApJ/834/9 : Spectroscopy obs. of LeoA, Aqr & Sgr dwarf gal. (Kirby+,2017)J/AJ/153/254 : Velocities RGB stars in Leo II dwarf galaxy (Spencer+, 2017)J/ApJ/852/49 : Properties of metal-poor stars in APOGEE DR13 (Hayes+, 2018)J/ApJS/235/36 : SPLASH-SXDF multi-wavelength photometric cat. (Mehta+, 2018)J/A+A/626/A15 : Sculptor Red Giant Branch stars abundances (Hill+, 2019)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/159/46https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/159/46http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/159/46https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/159/46https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/159/46http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/159/46GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/AJ/159/46/table1 (DEep Imaging Multi-Object Spectrograph (DEIMOS) observations)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/159/46/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/159/46/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/159/46/table1?GETtext/xml+votable180.050000true351.632083350.67583330.005555555555555556Cone search capability for table J/AJ/159/46/table2 (Catalog of abundances)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/159/46/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/159/46/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/159/46/table2?GETtext/xml+votable180.050000true351.437333350.67158330.0055555555555555566/2604 2611 2676-2677 2852 2854 14148-14149https://cdsarc.cds.unistra.fr/viz-bin/moc/J/AJ/159/46?format=asciiOpticalInfrareddefaultJ/AJ/159/46/table1DEep Imaging Multi-Object Spectrograph (DEIMOS) observationsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintdSphName of dwarf spheroidal galaxymeta.id;meta.maincharprimaryNsNumber of stars observed in this dSph (link to Table 2)meta.numberintnullableMaskSlitmask identificationinstr.paramcharNslits[51/119] Number of slits for each slitmaskmeta.numberintTexp[4.6/6.7] Total exposure timehtime.duration;obs.exposurefloatExp[20/206] Exposure time for each slitmaskmintime.duration;obs.exposureintNexp[1/8] Number of exposure per visitmeta.numberintAper[0.5/1.1] Aperturearcsecphys.angSize;instr.fovfloatSimbadSimbad column added by the CDSmeta.ref.urlcharNEDNED column added by the CDSmeta.numbercharLEDAmeta.ref.urlcharObs[2015/2017] UT year of observationtime.epoch;obs_RAPositions from Simbad (right ascension part)degpos.eq.ra;meta.main_DEPositions from Simbad (declination part)degpos.eq.dec;meta.mainJ/AJ/159/46/table2Catalog of abundancesNameStar identificationmeta.id;meta.mainintCommComment on membership and spectral featuresmeta.code.member;instr.bandwidthcharT12Display data from Tollerund+, 2012, J/ApJ/752/45meta.ref.urlintnullabledSphName of dwarf spheroidal galaxymeta.id.parentchar[Ca/Fe][-0.4/1.2]? Calcium-to-iron ratiolog(Sun)phys.abundfloatnullablee_[Ca/Fe][0.21/0.39]? Uncertainty in [Ca/Fe]log(Sun)stat.error;phys.abundfloatnullable[Ti/Fe][-0.77/1.2]? Titanium-to-iron ratiolog(Sun)phys.abundfloatnullablee_[Ti/Fe][0.13/0.4]? Uncertainty in [Ti/Fe]log(Sun)stat.error;phys.abundfloatnullableSimbadNameSimbad column added by the CDSmeta.idcharnullablerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRAJ2000[0/23] Hour of Right Ascension (J2000)pos.eq.ra;meta.mainDEJ2000[36/50] Degree of Declination (J2000)pos.eq.dec;meta.mainVmag[21/26]? Extinction-corrected apparent Cousins V magnitudemagphot.mag;em.opt.Vfloatnullablee_Vmag[0.01/0.5]? Uncertainty in Vmagmagstat.error;phot.magfloatnullableImag[19.6/23]? Extinction-corrected apparent Cousins I magnitudemagphot.mag;em.opt.Ifloatnullablee_Imag[0.01/0.2]? Uncertainty in Imagmagstat.error;phot.magfloatnullableMaskDEIMOS slitmaskinstr.paramcharSN[1.7/97] Signal-to-noise ratio per Angstrom0.1nm**-1stat.snrfloatHRV[-856/112]? Heliocentric radial velocitykm/sspect.dopplerVeloc;pos.heliocentricfloatnullablee_HRV[1.5/36]? Uncertainty in HRVkm/sstat.errorfloatnullableMm[N/Y] Member of galaxy; Y=yes (256 occurrences) or N=no (161 occurrences)meta.code.member;src.class.starGalaxycharTeff[3786/4991]? Effective temperatureKphys.temperature.effectiveintnullablee_Teff[10/117]? Uncertainty in TeffKstat.error;phys.temperature.effectiveintnullablelogg[0.3/1.6]? Surface gravitycm.s**-2phys.gravityfloatnullable[Fe/H][-3.2/-0.59]? Iron abundancelog(Sun)phys.abund.Fefloatnullablee_[Fe/H][0.1/0.39]? Uncertainty in [Fe/H]log(Sun)stat.error;phys.abund.Fefloatnullable[a/Fe][-0.54/1.2]? Alpha-to-iron ratio [{alpha}/Fe]log(Sun)phys.abundfloatnullablee_[a/Fe][0.12/0.39]? Uncertainty in [a/Fe]log(Sun)stat.error;phys.abundfloatnullable[Mg/Fe][0.39/1.2]? Magnesium-to-iron ratiolog(Sun)phys.abundfloatnullablee_[Mg/Fe][0.24/0.4]? Uncertainty in [Mg/Fe]log(Sun)stat.error;phys.abundfloatnullable[Si/Fe][-0.44/1.2]? Silicon-to-iron ratiolog(Sun)phys.abundfloatnullablee_[Si/Fe][0.18/0.4]? Uncertainty in [Si/Fe]log(Sun)stat.error;phys.abundfloatnullable