J/ApJ/920/63ivo://CDS.VizieR/J/ApJ/920/63doi:10.26093/cds/vizier.19200063CDSZhuang Z.,Kirby E.N.,Leethochawalit N.,de los Reyes M.A.C.2023-03-16T08:32:27Z2023-02-28T07:43:36ZCDS support team

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

cds-question@unistra.frgalaxiesgiant-starsinfrared-photometryvisible-astronomyphotometrymetallicityeffective-temperatureThe stellar mass-stellar metallicity relation (MZR) is an essential approach to probing the chemical evolution of galaxies. It reflects the balance between galactic feedback and gravitational potential as a function of stellar mass. However, the current MZR of local dwarf satellite galaxies (M*<~108M{sun}; measured from resolved stellar spectroscopy) may not be reconcilable with that of more massive galaxies (M*>109.5M{sun}; measured from integrated-light spectroscopy). Such a discrepancy may result from a systematic difference between the two methods, or it may indicate a break in the MZR around 109M{sun}. To address this question, we measured the stellar metallicity of NGC147 from integrated light using the Palomar Cosmic Web Imager. We compared the stellar metallicity estimates from integrated light with measurements from resolved stellar spectroscopy and found them to be consistent within 0.1dex. On the other hand, the high-mass MZR overpredicts the metallicity by 0.6dex at the mass of NGC147. Therefore, our results tentatively suggest that the discrepancy between the low-mass MZR and high-mass MZR should not be attributed to a systematic difference in techniques. Instead, real physical processes cause the transition in the MZR. In addition, we discovered a positive age gradient in the innermost region and a negative metallicity gradient from the resolved stars at larger radii, suggesting a possible outside-in formation of NGC147.2021ApJ...920...63Zhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/920/63CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/AJ/131/332 : Velocities of individual stars in NGC 205 (Geha+, 2006)J/A+A/459/85 : O/H and gas densities in star-forming galaxies (Nagao+, 2006)J/MNRAS/371/703 : MILES library of empirical spectra (Sanchez-Blazquez+, 2006)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/ApJS/182/216 : Surface photometry of Virgo ellipticals (Kormendy+, 2009)J/ApJ/711/361 : Local Group dE galaxies. II. (Geha+, 2010)J/ApJS/191/352 : Abundances in stars Milky Way dwarf satellites (Kirby+, 2010)J/MNRAS/413/813 : ATLAS3D project. I. (Cappellari+, 2011)J/ApJ/758/11 : Bayesian distances to M31 satellites (Conn+, 2012)J/ApJ/765/140 : Stacked spectra of SDSS star forming galaxies (Andrews+, 2013)J/ApJ/779/102 : Metallicities of RGB stars in dwarf galaxies (Kirby+, 2013)J/ApJ/776/80 : PAndAS view of Andromeda satellites. I. (Martin+, 2013)J/ApJ/790/73 : Fe & alpha abundance of RGBs in M31 satellites (Vargas+, 2014)J/ApJ/789/147 : Star formation histories of LG dwarf galaxies (Weisz+, 2014)J/ApJ/834/9 : Spectroscopy obs. of LeoA, Aqr & Sgr dwarf gal. (Kirby+, 2017)J/ApJ/856/15 : Stellar mass-metallicity relation. I. (Leethochawalit+, 2018)J/ApJ/885/100 : Star mass-metallicity relation. II. (Leethochawalit+, 2019)J/AJ/159/46 : Elemental abundances 416 stars 5 dSphs of M31 (Kirby+, 2020)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/920/63https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/920/63http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/920/63https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/920/63https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/920/63http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/920/63GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/920/63/table3 (Metallicity catalog for RGB stars observed with Keck/DEIMOS)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/920/63/table3?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/920/63/table3?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/920/63/table3?GETtext/xml+votable180.050000true8.09958348.3316110.0055555555555555566/2777https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/920/63?format=asciiOpticalInfrareddefaultJ/ApJ/920/63/table3Metallicity catalog for RGB stars observed with Keck/DEIMOSrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameIdentifier of starmeta.id;meta.mainintRAJ2000[0] Hour of Right Ascension (J2000)pos.eq.ra;meta.mainDEJ2000[48] Degree of Declination (J2000)pos.eq.dec;meta.mainFilt1[g]? First filterinstr.bandpasscharmag1[21.8/24.3]? Extinction-corrected mag Filt1 (1)magphot.mag;em.opt.Vfloatnullablee_mag1[0.01/0.2]? Uncertainty in mag1magstat.errorfloatnullableFilt2[i]? Second filterinstr.bandpasscharmag2[20.3/22.1]? Extinction-corrected mag Filt2 (1)magphot.mag;em.opt.Ifloatnullablee_mag2[0.008/0.05]? Uncertainty in mag2magstat.errorfloatnullableTeff[3500/4959] Effective temperatureKphys.temperature.effectiveinte_Teff[0/89] Uncertainty in TeffKstat.error;phys.temperature.effectiveintlogg[0/1.23] Log of surface gravitylog(cm.s**-2)phys.gravityfloate_logg[0.1] Uncertainty in logglog(cm.s**-2)stat.errorfloatvt[1.85/2.14] Microturbulent velocitykm/sphys.velocfloat[Fe/H][-3.35/-0.02] Iron abundance relative to the Sunlog(Sun)phys.abund.Fefloate_[Fe/H][0.1/0.5] Uncertainty in [Fe/H]log(Sun)stat.error;phys.abund.Fefloat