J/AJ/144/16ivo://CDS.VizieR/J/AJ/144/16doi:10.26093/cds/vizier.51440016CDSKreckel K.Platen E.Aragon-Calvo M.A.van Gorkom J.H.,van de Weygaert R.van der Hulst J.M.Beygu B.2017-06-26T11:50:36Z2013-09-27T08:11:14ZCDS support team

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

cds-question@unistra.frh-i-line-emissionredshiftedvisible-astronomysloan-photometryinfrared-photometryphotometrygalaxiesspectroscopysurveysWe have carefully selected a sample of 60 galaxies that reside in the deepest underdensities of geometrically identified voids within the Sloan Digital Sky Survey. HI imaging of 55 galaxies with the Westerbork Synthesis Radio Telescope reveals morphological and kinematic signatures of ongoing interactions and gas accretion. We probe a total volume of 485Mpc^3^ within the voids, with an angular resolution of 8kpc at an average distance of 85Mpc. We reach column density sensitivities of 5x10^19^/cm^-2^, corresponding to an HI mass limit of 3x10^8^M_{sun}_. We detect HI in 41 galaxies, with total masses ranging from 1.7x10^8^ to 5.5x10^9^M_{sun}_. The upper limits on the 14 non-detections are not inconsistent with their luminosities, given their expected HI mass-to-light ratios. We find that the void galaxies are generally gas-rich, low-luminosity, blue disk galaxies, with optical and HI properties that are not unusual for their luminosity and morphology. The sample spans a range of absolute magnitudes (-16.1>M_r_>-20.4) and colors (0.06<g-r<0.87), and includes disk and irregular galaxies. We also identify three as early-type galaxies, all of which are not detected in HI. All galaxies have stellar masses less than 3x10^10^M_{sun}_, and many have kinematic and morphological signs of ongoing gas accretion, suggesting that the void galaxy population is still in the process of assembling. The small-scale clustering in the void, within 600kpc and 200km/s, is similar to that in higher density regions, and we identify 18 HI-rich neighboring galaxies in the voids. Most are within 100kpc and 100km/s of the targeted galaxy, and we find no significant population of HI-rich low-luminosity galaxies filling the voids, contrary to what is predicted by simulations.2012AJ....144...16Khttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/144/16CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toV/139 : The SDSS Photometric Catalog, Release 9 (Adelman-McCarthy+, 2012)J/AJ/138/338 : Arecibo Legacy Fast ALFA Survey. IX. (Stierwalt+, 2009)J/ApJS/183/214 : Arecibo Legacy Fast Alfa Survey (ALFALFA) VIII.J/AJ/136/713 : Arecibo legacy fast ALFA survey. VI. (Kent+, 2008)J/AJ/135/588 : Arecibo legacy fast ALFA survey V. (Saintonge+, 2008)J/AJ/133/2569 : Arecibo legacy fast ALFA survey III. (Giovanelli+, 2007)J/A+A/370/765 : HI synthesis observations in UMa cluster (Verheijen+, 2001)J/AJ/119/32 : Survey of galaxies within nearby voids. II (Grogin+, 2000)J/AJ/118/2561 : Survey of galaxies within prominent nearby voidsJ/A+A/319/67 : HI observations of dwarf galaxies in voids (Huchtmeier+ 1997)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/144/16https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/144/16http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/144/16https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/144/16https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/144/16http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/144/16GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/AJ/144/16/vgs (Optical parameters and star formation of the VGSD galaxies)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/144/16/vgs?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/144/16/vgs?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/144/16/vgs?GETtext/xml+votable180.050000true129.2812532.5613890.005555555555555556Cone search capability for table J/AJ/144/16/table3 (Companion galaxy parameters taken from the SDSS catalog)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/144/16/table3?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/144/16/table3?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/144/16/table3?GETtext/xml+votable180.050000true151.33208351.1772220.0055555555555555566/4350 4520 4886 5043 5230 5235 5313 5464 5466 5549 5749 5877 6061 6064 7239 7241 7476 8266 8669 8982 9029 9037 9040 9048 9111 9140 9154 9161 9739 9740 9762 9776 10328 10335 10357 10618 10679 10713 10740 10841 10879 10882 10892 11010 11111 11115 11191 11238 11239 11297 11403 11405 11440 11776 11800 11816 26366 27540 27543 27771 28196 28342 28549https://cdsarc.cds.unistra.fr/viz-bin/moc/J/AJ/144/16?format=asciiOpticalInfraredRadiodefaultJ/AJ/144/16/vgsOptical parameters and star formation of the VGSD galaxiesSDSSSDSS name (hhmmss.ss+ddmmss.s; J2000)meta.idcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRDisplay the radio data for this galaxymeta.ref.urlcharVGS[1/60] Void galaxy identifier <[KPA2011] VGS NN> in Simbadmeta.id;meta.mainintprimaryaSimbad column added by the CDSmeta.ref.urlcharRAJ2000Hour of Right Ascension (J2000)pos.eq.ra;meta.mainDEJ2000Degree of Declination (J2000)pos.eq.dec;meta.mainz[0.01/0.03] Redshiftsrc.redshiftdoublermag[14.17/18.05] SDSS-DR7 magnitude in r filtermagphot.mag;em.opt.Rfloatg-rColor index g-r (1)magphot.color;em.opt.B;em.opt.RfloatRMag[-20.4/-16.2] Johnson-Cousins R-band absolute magnitude (corrected for galactic extinction)magphys.magAbs;em.opt.RfloatdeltaFiltered density contrast at R_f_=1h^-1^Mpcphys.density;arith.ratiofloatDR7+9Display the data from the photometric SDSS-DR7 and -DR9 catalogs within 1.5"meta.ref.urlcharSloanDisplay the SDSS data for this void galaxy or companion galaxymeta.ref.urlcharMass[0.2/213.4]? Stellar mass1e+08solMassphys.massfloatnullableSFR? Star formation rate calculated from the H{alpha} emission-line featuresolMass/yrphys.SFRfloatnullableSFR/M*? H{alpha} star formation rate-to-stellar mass ratio1e-11yr**-1phys.SFRfloatnullableSFR/MHI? H{alpha} star formation rate-to-HI mass ratio1e-11yr**-1phys.SFRfloatnullableSimbadSimbad column added by the CDSmeta.ref.urlcharJ/AJ/144/16/table3Companion galaxy parameters taken from the SDSS catalogrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRDisplay the radio data for this galaxymeta.ref.urlcharVGS[1/60] Void galaxy main identifiermeta.id;meta.mainintm_VGS[ab] Companion galaxy identifier <[KPA2011] VGS NNa> in Simbadmeta.code.multipcharSDSSSDSS name (hhmmss.ss+ddmmss.s; J2000)meta.idcharRAJ2000Hour of Right Ascension (J2000)pos.eq.ra;meta.mainDEJ2000Degree of Declination (J2000)pos.eq.dec;meta.mainrmag[13.79/22.26] SDSS-DR7 magnitude in r filtermagphot.mag;em.opt.Rfloatg-rColor index g-r (1)magphot.color;em.opt.B;em.opt.RfloatRMag[-21/-11.4] Johnson-Cousins R-band absolute magnitude (corrected for galactic extinction)magphys.magAbs;em.opt.RfloatDthetaDisplacement from the beam center {Delta}{theta} between the target and companion galaxyarcminpos.angDistancefloatSepProjected sky separation {Delta}d between the target and companion galaxykpcpos.angDistanceintDVVelocity separation {Delta}v between the target and companion galaxykm/sphys.veloc;arith.diffintdeltaFiltered density contrast at R_f_=1h^-1^Mpcphys.density;arith.ratiofloatDR7+9Display the data from the photometric SDSS-DR7 and -DR9 catalogs within 1.5"meta.ref.urlcharSloanDisplay the SDSS data for this void galaxy or companion galaxymeta.ref.urlcharSimbadSimbad column added by the CDSmeta.refcharJ/AJ/144/16/table4HI properties of targeted void galaxies and companionsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintVGSVoid galaxy identifier <[KPA2011] VGS NN> in Simbad or companion galaxy identifier <[KPA2011] VGS NNa> in Simbadmeta.id;meta.maincharTimeTotal integration time for each objecthtime.expofloatl_MHI3{sigma} upper limit on MHI (non-detections)meta.code.errorcharMHI? HI mass (see Section 3.1 for more details)1e+08solMassphys.massfloatnullablee_MHI? Error in MHI1e+08solMassstat.errorfloatnullableVsys? Systemic HI velocity, using the optical definitionkm/sspect.dopplerVeloc.opt;em.line.HIintnullableDist? Distance to the target galaxyMpcpos.distance;pos.galactocentricintnullabler90Optical galaxy radius (containing 90% of the light)kpcphys.size.radiusfloatl_rHIUpper limit on rHI (listed for poorly resolved systems when possible)meta.code.errorcharrHI? HI radiuskpcphys.size.radiusfloatnullableW50? The 50% HI line widths, corrected for instrumental broadeningkm/sspect.line.widthintnullableW20? The 20% HI line widths, corrected for instrumental broadeningkm/sspect.line.widthintnullablei? Inclination angle, calculated such that 90{deg} is edge-on (see Section 3.1 and equation (1) for further details)degsrc.orbital.inclination;meta.modelledintnullablePA? Position angledegpos.posAngintnullablel_MdynUpper limit on Mdyn (listed for poorly resolved systems when possible)meta.code.errorcharMdyn? Dynamical mass1e+10solMassphys.massfloatnullableMHI/L? HI mass-to-light ratiosolMass/solLumphys.composition.massLightRatiofloatnullable