J/ApJ/819/73ivo://CDS.VizieR/J/ApJ/819/73doi:10.26093/cds/vizier.18190073CDSLian J.Hu N.Fang G.Ye C.Kong X.2018-07-02T15:17:07Z2018-02-05T12:18:52ZCDS support team

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

cds-question@unistra.frgalaxiesspectroscopyline-intensitiesredshiftedextinctionchemical-abundancesWe present oxygen abundance measurements for 74 blue compact dwarf (BCD) galaxies in the redshift range of [0.2, 0.5] using the strong-line method. The spectra of these objects are taken using Hectospec on the Multiple Mirror Telescope. More than half of these BCDs had dust attenuation corrected using the Balmer decrement method. For comparison, we also selected a sample of 2023 local BCDs from the Sloan Digital Sky Survey (SDSS) database. Based on the local and intermediate-z BCD samples, we investigated the cosmic evolution of the metallicity, star formation rate (SFR), and D_n_(4000) index. Compared with local BCDs, the intermediate-z BCDs had a systematically higher R23 ratio but a similar O32 ratio. Interestingly, no significant deviation in the mass-metallicity (MZ) relation was found between the intermediate-z and local BCDs. Besides the metallicity, the intermediate-z BCDs also exhibited an SFR distribution that was consistent with local BCDs, suggesting a weak dependence on redshift. The intermediate-z BCDs seemed to be younger than the local BCDs with lower D_n_(4000) index values. The insignificant deviation in the mass-metallicity and mass-SFR relations between intermediate-z and local BCDs indicates that the relations between the global parameters of low-mass compact galaxies may be universal. These results from low-mass compact galaxies could be used to place important observational constraints on galaxy formation and evolution models.2016ApJ...819...73Lhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/819/73CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/ApJS/147/29 : BRHalpha data of blue compact dwarf galaxiesJ/A+A/429/115 : JHK' photometry of Blue Compact Dwarf Galaxies (Noeske+, 2005)J/A+A/434/887 : HI data of blue compact dwarf galaxies (Huchtmeier+, 2005)J/ApJS/156/345 : Surface photometry of BCD galaxies (Gil de Paz+, 2005)J/ApJS/206/8 : COSMOS/UltraVISTA Ks-selected catalogs v4.1 (Muzzin+, 2013)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/819/73https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/819/73http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/819/73https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/819/73https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/819/73http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/819/73GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/819/73/table1 (Emission Line Measurements of COSMOS BCD Sample)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/819/73/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/819/73/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/819/73/table1?GETtext/xml+votable180.050000true149.90579172.08466670.0055555555555555565/6814https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/819/73?format=asciidefaultJ/ApJ/819/73/table1Emission Line Measurements of COSMOS BCD SampleSimbadNameSimbad column added by the CDSmeta.idcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintID[1/74] Source identification numbermeta.idintRAJ2000Hour of Right Ascension (J2000)pos.eq.ra;meta.mainDEJ2000Degree of Declination (J2000)pos.eq.dec;meta.mainF3727Flux of [OII]{lambda}3727 line (in 10^-18^erg/s/cm^2^)1e-21W.m**-2phot.flux;spect.linefloate_F3727Uncertainty in F37271e-21W.m**-2stat.errorfloatFHg? H{gamma} line flux1e-21W.m**-2phot.flux;em.line.Hgamma;spect.linefloatnullablee_FHg? Uncertainty in FHg1e-21W.m**-2stat.errorfloatnullableFHbH{beta} line flux1e-21W.m**-2phot.flux;em.line.Hbetafloate_FHbUncertainty in FHb1e-21W.m**-2stat.errorfloatEW(Hb)Equivalent width of H{beta} ({AA})0.1nmspect.line.eqWidth;em.line.HbetafloatF4959Flux of [OIII]{lambda}4959 line (in 10^-18^erg/s/cm^2^)1e-21W.m**-2phot.flux;em.line.OIII;spect.linefloate_F4959Uncertainty in F49591e-21W.m**-2stat.errorfloatF5007Flux of [OIII]{lambda}5007 line (in 10^-18^erg/s/cm^2^)1e-21W.m**-2phot.flux;em.line.OIII;spect.linefloate_F5007Uncertainty in F50071e-21W.m**-2stat.errorfloatCOSMOSDisplay the data from Muzzin et al. (2013, Cat. J/ApJS/206/8)meta.ref.urlcharJ/ApJ/819/73/table2Physical Properties of COSMOS BCD SamplezRedshiftsrc.redshiftfloat12+log(O/H)Oxygen abundancephys.abundfloatn_Av[s] Note on Av (1)meta.notecharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintID[1/74] Source identification numbermeta.idintAvDust extinctionmagphys.absorptionfloatlogM*Log of stellar masslog(solMass)phys.massfloate_12+log(O/H)Uncertainty in 12+log(O/H)stat.errorfloatlog(SFR)Log of star formation rate (2)log(solMass.yr**-1)phys.SFRfloate_log(SFR)Uncertainty in log(SFR)log(solMass.yr**-1)stat.errorfloatDn(4000)? D_n_(4000) index (3)spect.indexfloatnullable