J/ApJ/708/1076ivo://CDS.VizieR/J/ApJ/708/1076doi:10.26093/cds/vizier.17081076CDSTollerud E.J.Barton E.J.van Zee L.Cooke J.2017-07-05T06:59:50Z2012-03-26T13:51:38ZCDS support team

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

cds-question@unistra.frgalaxiesspectroscopychemical-abundancesredshiftedline-intensitiesAs part of the WIYN High Image Quality Indiana-Irvine (WHIQII) survey, we present 123 spectra of faint emission-line galaxies, selected to focus on intermediate redshift (0.4<~z<~0.8) galaxies with blue colors that appear physically compact on the sky. The sample includes 15 true Luminous Compact Blue Galaxies (LCBGs) and an additional 27 slightly less extreme emission-line systems. These galaxies represent a highly evolving class that may play an important role in the decline of star formation since z~1, but their exact nature and evolutionary pathways remain a mystery. Here, we use emission lines to determine metallicities and ionization parameters, constraining their intrinsic properties and state of star formation. Some LCBG metallicities are consistent with a "bursting dwarf" scenario, while a substantial fraction of others are not, further confirming that LCBGs are a highly heterogeneous population but are broadly consistent with the intermediate redshift field. In agreement with previous studies, we observe overall evolution in the luminosity-metallicity relation at intermediate redshift. Our sample, and particularly the LCBGs, occupies a region in the empirical R_23_-O_32_ plane that differs from luminous local galaxies and is more consistent with dwarf irregulars at the present epoch, suggesting that cosmic "downsizing" is observable in even the most fundamental parameters that describe star formation.2010ApJ...708.1076Thttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/708/1076CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/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/A+A/425/417 : Star formation rates of blue compact galaxies (Kong+, 2004)J/ApJS/147/29 : BRHalpha data of blue compact dwarf galaxies (Gil De Paz+,J/A+A/396/503 : Spectra of blue compact galaxies (Kong+, 2002)J/A+A/373/24 : Blue compact galaxies from SBS (Pustilnik+ 2001)J/A+AS/137/419 : Dynamics of blue compact galaxies I. The data (Oestlin + 1999)J/ApJ/511/639 : Abundances in blue compact galaxies (Izotov+, 1999)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/708/1076https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/708/1076http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/708/1076https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/708/1076https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/708/1076http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/708/1076GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/708/1076/whiqii (WIYN High Image Quality Indiana-Irvine (WHIQII): photometric properties and emission line ratios of objects with redshift)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/708/1076/whiqii?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/708/1076/whiqii?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/708/1076/whiqii?GETtext/xml+votable180.050000true177.67012528.75477220.0055555555555555566/557 8917 9484 9486 13480 19717 19719 22485 23465 23468 28561https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/708/1076?format=asciiOpticaldefaultJ/ApJ/708/1076/whiqiiWIYN High Image Quality Indiana-Irvine (WHIQII): photometric properties and emission line ratios of objects with redshiftrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintWHIQIIThe WHIQII object numbermeta.id;meta.mainintRAJ2000Hour of Right Ascension (J2000)pos.eq.ra;meta.mainDEJ2000Degree of Declination (J2000)pos.eq.dec;meta.mainBMagK-corrected B band absolute magnitudemagphys.magAbs;em.opt.Bfloate_BMagUncertainty in BMagmagstat.error;phot.mag;em.opt.BfloatB-VK-corrected (B-V) color indexmagphot.color;em.opt.B;em.opt.Vfloate_B-VUncertainty in B-Vmagstat.error;phot.color;em.opt.BfloatMstarStellar mass (1)solMassphys.massdoublerhHalf-light radiuskpcphys.size.radiusfloatzRedshift from spectrumsrc.redshiftfloate_zUncertainty in zstat.error;src.redshiftfloatR23? The ([OII]3727+[OIII]4959,5007)/H{beta} line flux ratiophot.flux;arith.ratio;spect.linefloatnullablee_R23? Uncertainty in R23stat.errorfloatnullableO23? The [OIII]4959,5007/[OII]3727 line flux ratiospect.line.intensity;arith.ratiofloatnullablee_O23? Uncertainty in O23stat.errorfloatnullableO/H? Oxygen abundance; log(O/H)+12 (2)phys.abundfloatnullablee_O/H? Uncertainty in O/Hstat.error;phys.abundfloatnullableREW? The ([OII]3727+[OIII]4959,5007)/H{beta} equivalent width ratiospect.line.eqWidthfloatnullablee_REW? Uncertainty in REWstat.errorfloatnullableOEW? The [OIII]4959,5007/[OII]3727 equivalent width ratiospect.line.eqWidthfloatnullablee_OEW? Uncertainty in OEWstat.errorfloatnullableO/HEW? Oxygen abundance from equivalent width; log(O/H)+12 (2)phys.abundfloatnullablee_O/HEW? Uncertainty in O/HEWstat.errorfloatnullableSimbadSimbad column added by the CDSmeta.refcharNEDSimbad column added by the CDSmeta.refchar