J/AJ/138/1037ivo://CDS.VizieR/J/AJ/138/1037doi:10.26093/cds/vizier.51381037CDSCote S.Draginda A.Skillman E.D.Miller B.W.2017-06-27T06:38:57Z2012-02-09T14:55:47ZCDS support team

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

cds-question@unistra.frgalaxiesvisible-astronomyh-ii-regionsh-alpha-photometryWe present H{alpha} narrow-band imaging of 17 dwarf irregular (dI) galaxies in the nearby Centaurus A Group. Although all large galaxies of the group are or recently have been through a period of enhanced star formation, the dIs have normal star formation rates (SFRs) and do not contain a larger fraction of dwarf starbursts than other nearby groups such as the Sculptor Group or the Local Group. Most of the galaxies in the group now have fairly accurately known distances, which enables us to obtain relative distances between dIs and larger galaxies of the group. We find four transition dwarfs in the Group, dwarfs that show characteristics of both dE/dSphs and dIs, and which contain cold gas but no current star formation.2009AJ....138.1037Chttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/138/1037CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/AJ/133/504 : Galaxies around CenA/M83 galaxy complex (Karachentsev+, 2007)J/MNRAS/346/787 : HIDEEP survey (Minchin+, 2003)J/A+AS/141/469 : First list of the Karachentsev catalog (Huchtmeier+, 2000)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/138/1037https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/138/1037http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/138/1037https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/138/1037https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/138/1037http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/138/1037GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/AJ/138/1037/digal (Star formatop, properties of Centaurus A Group dwarf irregular galaxies)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/138/1037/digal?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/138/1037/digal?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/138/1037/digal?GETtext/xml+votable180.050000true183.4566667-38.23111110.005555555555555556Cone search capability for table J/AJ/138/1037/table3 (HII regions positions and H{alpha} fluxes)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/138/1037/table3?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/138/1037/table3?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/138/1037/table3?GETtext/xml+votable180.050000true191.4720833-33.81347220.0055555555555555566/24952 41917 41946 41949 43245 43293 43333 43420 43427 43430 43499 43605 43634 43706 43763 43797 43878 43883 43884 43924 43972https://cdsarc.cds.unistra.fr/viz-bin/moc/J/AJ/138/1037?format=asciiOpticaldefaultJ/AJ/138/1037/digalStar formatop, properties of Centaurus A Group dwarf irregular galaxiesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameGalaxy namemeta.id;meta.maincharprimaryn_Name[cde] Notes (2)meta.notecharSFRTotal star formation rate (3)solMass/yrphys.SFRdoubleSFR/LBSFR normalized to the galaxy luminositysolMass.yr**-1.solLum**-1phys.SFRdoubletFormEstimated star formation timescaleGyrmeta.idfloatl_MHILimit flag on MHImeta.code.errorcharMHITotal galaxy HI mass (M(HI)) (4)1e+06solMassphys.massfloatl_MHI/LBLimit flag on MHI/LBmeta.code.errorcharMHI/LBGas mass normalized to the galaxy luminositysolMass/solLumphys.massfloatl_tGasLimit flag on tGasmeta.code.errorchartGasGas depletion timescale (5)Gyrtime.scalefloatSFR/area? SFR per unit areasolMass.yr**-1.pc**-2phys.SFRfloatnullableSimbadNameSimbad column added by the CDSmeta.idcharHSimbad column added by the CDSmeta.ref.urlcharNEDSimbad column added by the CDScharHVHeliocentric velocity from Cote et al., 1997AJ....114.1313Ckm/sspect.dopplerVeloc;pos.heliocentricintnullableDistDistanceMpcpos.distance;pos.heliocentricfloatnullablee_Dist? Distance uncertaintyMpcstat.errorfloatnullabler_Dist[1/2]? Dist reference (1)meta.ref;pos.frameintnullableBMagAbsolute B-band magnitudemagphot.mag;em.opt.Bfloatnullablee_BMagBMag uncertaintymagstat.error;phot.mag;em.opt.Bfloatnullable_RAPositions (from table1 or SIMBAD) (right ascension part)degpos.eq.ra;meta.main_DEPositions (from table1 or SIMBAD) (declination part)degpos.eq.dec;meta.mainJ/AJ/138/1037/table3HII regions positions and H{alpha} fluxesNumHII region numbermeta.id;meta.mainintRAJ2000Hour of right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Degree of declination (J2000)pos.eq.dec;meta.mainFHaH{alpha} flux in 10^-15^erg/cm^2^/saW.m**-2phot.flux;em.line.Halphafloate_FHaFHa uncertaintyaW.m**-2stat.errorfloatlogLHaLog of H{alpha} luminosity in erg/slog(1e-07W)phys.luminosity;em.line.HalphafloatrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameGalaxy namemeta.id.parentchar