J/ApJ/902/39ivo://CDS.VizieR/J/ApJ/902/39doi:10.26093/cds/vizier.19020039CDSKarunakaran A.Spekkens K.Zaritsky D.Donnerstein R.L.,Kadowaki J.Dey A.2023-09-05T06:57:17Z2022-03-09T09:37:08ZCDS support team

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

cds-question@unistra.frh-i-line-emissiongalaxiesphotometryvisible-astronomygalaxy-classification-systemstwo-color-diagramsWe present neutral hydrogen (HI) observations using the Robert C. Byrd Green Bank Telescope (GBT) of 70 optically detected UDG candidates in the Coma region from the Systematically Measuring Ultra-Diffuse Galaxies survey (SMUDGes). We detect HI in 18 targets, confirming nine to be gas-rich UDGs and the remainder to be foreground dwarfs. None of our HI-detected UDGs are Coma Cluster members and all but one are in low-density environments. The HI-detected UDGs are bluer and have more irregular morphologies than the redder, smoother candidates not detected in HI, with the combination of optical color and morphology being a better predictor of gas richness than either parameter alone. There is little visual difference between the gas-rich UDGs and the foreground dwarfs in the SMUDGes imaging, and distances are needed to distinguish between them. We find that the gas richnesses of our HI-confirmed UDGs and those from other samples scale with their effective radii in two stellar mass bins, possibly providing clues to their formation. We attempt to place our UDGs on the baryonic Tully-Fisher relation (BTFR) using optical ellipticities and turbulence-corrected HI line widths to estimate rotation velocities, but the potential systematics associated with fitting smooth Sersic profiles to clumpy, low-inclination disks of low surface brightness precludes a meaningful analysis of potential BTFR offsets. These observations are a pilot for a large campaign now under way at the GBT to use the HI properties of gas-rich UDGs to quantitatively constrain how these galaxies form and evolve.2020ApJ...902...39Khttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/902/39CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toVIII/77 : HI spectral properties of galaxies (Springob+, 2005)J/AJ/113/22 : Tully-Fisher Relation. I. (Giovanelli+ 1997)J/A+AS/131/73 : Catalogue of HI maps of galaxies. I. (Martin 1998)J/A+A/370/765 : HI synthesis observations in UMa cluster (Verheijen+, 2001)J/ApJ/588/218 : i*g* photometry of SDSS EDR galaxies (Abraham+, 2003)J/ApJS/147/1 : Classification of nearby galaxies (Conselice+, 2003)J/A+A/506/677 : HI in Local Supercluster dwarf galaxies (Huchtmeier+, 2009)J/AJ/142/170 : ALFALFA survey: {alpha}.40 HI source catalog (Haynes+, 2011)J/A+A/544/A65 : GALEX Arecibo SDSS survey. VI. (Catinella+, 2012)J/AJ/144/134 : LITTLE THINGS survey of nearby dwarf galaxies (Hunter+, 2012)J/AJ/147/13 : Disturbers of nearby giant galaxies (Karachentsev+, 2014)J/ApJS/215/22 : The Extended Virgo Cluster Catalog (EVCC) (Kim+, 2014)J/ApJ/809/146 : SDSS-DR8 isolated low-mass galaxies (Bradford+, 2015)J/ApJ/816/L14 : Tully-Fisher relation in disk gal. from SPARC (Lelli+, 2016)J/MNRAS/456/1359 : IAC Stripe 82 Legacy Project: Photometry (Fliri+, 2016)J/ApJS/225/11 : Subaru-UDGs in the Coma cluster (Yagi+, 2016)J/ApJ/842/133 : HI-bearing ultra-diffuse ALFALFA galaxies (Leisman+, 2017)J/A+A/608/A142 : Fornax Deep Survey with VST. III. LSB gal. (Venhola+, 2017)J/ApJ/857/104 : Low surface brightness galaxies from HSC-SSP (Greco+, 2018)J/AJ/156/18 : Binary companions of evolved stars (Price-Whelan+, 2018)J/ApJ/861/49 : ALFALFA extragalactic HI source catalog (Haynes+, 2018)J/ApJS/240/1 : SMUDGes. I. First results in Coma Cluster (Zaritsky+, 2019)J/AJ/157/212 : Ultra-diffuse galaxies at UV wavelengths (Singh+, 2019)J/ApJS/247/46 : Opt. phot. of SMUDGes ultra-diffuse galaxies (Barbosa+, 2020)J/ApJ/894/75 : Ultra-diffuse & LSB dwarf gal. in A370 from HFF (Lee+, 2020)J/ApJ/923/257 : Ultra-diffuse galaxies with sp. redshifts (Kadowaki+, 2021)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/902/39https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/902/39http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/902/39https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/902/39https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/902/39http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/902/39GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/902/39/table1 (Target ultra-diffuse galaxy (UDG) candidate properties)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/902/39/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/902/39/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/902/39/table1?GETtext/xml+votable180.050000true165.96541728.6888890.0055555555555555565/7037 7123 6/5203 10250 10295 10374 10380 10383 10398 10402-10403 10417 10440 10756 10760 10763 27965 27995 28003 28009 28015 28024-28025 28086 28101 28105 28108 28121 28123 28126 28130-28131 28135 28138 28142-28143 28145-28146 28152-28153 28155 28485-28486 28491 28496 28499 28506 28528-28529 285393.603256632333496e-19 4.973527819473193e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/902/39?format=asciiOpticalRadiodefaultJ/ApJ/902/39/table1Target ultra-diffuse galaxy (UDG) candidate propertiesn[0.29/1.36] Sersic indexstat.fit.paramfloate_n[0.01/0.07] 1 sigma uncertainty in nstat.errorfloatrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSMDGAdopted SMUDGes UDG candidate name (HHMMSSs+DDMMSS; J2000)meta.id;meta.maincharprimaryRAJ2000[11/13] Hour of Right Ascension (J2000) (1)pos.eq.ra;meta.mainf_posOffset flag (2)meta.codecharDEJ2000[18/33] Degree of Declination (J2000) (1)pos.eq.dec;meta.maingtmag[16.5/20.3] CTIO/DECam g band total apparent AB magnitude (3)magphot.mag;em.opt.Bfloate_gtmag[0.01/0.05] 1 sigma uncertainty in gtmag (3)magstat.error;phot.magfloatSimbadSimbad column added by the CDSmeta.ref.urlcharg-r[0.03/0.84] g-r color index (3)magphot.color;em.opt.B;em.opt.Rfloatmu0g[23.78/26.04] Central surface brightness, g-band (3)mag.arcsec**-2phot.mag.sb;em.opt.Bfloate_mu0g[0.02/0.2] 1 sigma uncertainty in mu0g (3)mag.arcsec**-2stat.errorfloate_g-r[0.01/0.07] 1 sigma uncertainty in g-r (3)magstat.error;phot.color;em.opt.Bfloatg-z[0.06/1.24] g-z color index (3)magphot.color;em.opt.B;em.opt.Ifloate_g-z[0.01/0.08] 1 sigma uncertainty in g-z (3)magstat.errorfloatre[4.7/25.8] Effective radiusarcsecphys.angSizefloate_re[0.1/1.2] 1 sigma uncertainty in rearcsecstat.errorfloatb/a[0.38/0.97] Axial ratiophys.angSize;arith.ratiofloate_b/a[0.01/0.03] 1 sigma uncertainty in b/astat.errorfloatPA[-87/84] Position angle, {theta}degpos.posAnginte_PA[1/29] 1 sigma uncertainty in PAdegstat.errorintTime[0.2/3.9] Total effective GBT integration time (4)htime.expofloatRMS[0.22/2.29] Representative RMS noise (5)mJyinstr.det.noisefloatRefReference from which UDG candidate is selected (6)meta.ref;pos.framecharRef2Alternative reference (7)meta.bibcharHIHI detectionmeta.codecharndHI properties of non-detections (link to Table 4)meta.ref.urlintnullableZ19Display data from Zaritsky+, 2019, J/ApJS/240/1 within 2'meta.ref.urlintnullableK21Display data from Kadowaki+, 2021, J/ApJ/923/257 within 2'meta.ref.urlintnullableJ/ApJ/902/39/table2Properties of UDG with HI detectionsSMDGAdopted SMUDGes UDG candidate name (HHMMSSs+DDMMSS; J2000)meta.id;meta.maincharDHI[6/165.5] Distance estimate (2)Mpcpos.distancefloatlogMHI[6.45/9.22] Log, H I mass (3)log(solMass)phys.massfloate_logMHI[0.08/0.72] Uncertainty in logMHIlog(solMass)stat.errorfloatlogMstar[5.64/8.57] Log, stellar mass (4)log(solMass)phys.massfloatrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintDV[5/25] Velocity resolution of spectrum used to compute H I propertieskm/sspect.resolutionintrmsDV[0.45/4.76] RMS noise of spectrum at {Delta}VmJyinstr.det.noisefloatVsys[420/11585] Heliocentric systemic velocitykm/sspect.dopplerVeloc;pos.heliocentricinte_Vsys[1/6] Uncertainty in Vsyskm/sstat.errorintW50c[8/102] Velocity width of the HI detection (1)km/sspect.dopplerVelocinte_W50c[2/8] Uncertainty in W50ckm/sstat.errorintSHI[0.13/4.37] Integrated H I fluxJy.km/sphot.flux.density;spect.linefloate_SHI[0.04/0.21] Uncertainty in SHIJy.km/sstat.errorfloate_logMstar[0.2/0.75] Uncertainty in logMstarlog(solMass)stat.errorfloatlogMbary[6.68/9.41] Log, baryonic mass, 1.33*MHI+Mstarlog(solMass)phys.massfloate_logMbary[0.08/0.72] Uncertainty in logMbarylog(solMass)stat.errorfloatReff[0.2/5.85] Effective radius using reff (Table 1) and DHIkpcphys.size.radiusfloate_Reff[0.02/0.62] Uncertainty in Reffkpcstat.errorfloatJ/ApJ/902/39/table3HI properties of dwarfsSMDGAdopted SMUDGes UDG candidate name (HHMMSSs+DDMMSS; J2000)meta.id;meta.maincharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintDV[5/25] Velocity resolution of spectrum used to compute H I propertieskm/sspect.resolutionintrmsDV[0.45/4.76] RMS noise of spectrum at {Delta}VmJyinstr.det.noisefloatVsys[420/11585] Heliocentric systemic velocitykm/sspect.dopplerVeloc;pos.heliocentricinte_Vsys[1/6] Uncertainty in Vsyskm/sstat.errorintW50c[8/102] Velocity width of the HI detection (1)km/sspect.dopplerVelocinte_W50c[2/8] Uncertainty in W50ckm/sstat.errorintSHI[0.13/4.37] Integrated H I fluxJy.km/sphot.flux.density;spect.linefloate_SHI[0.04/0.21] Uncertainty in SHIJy.km/sstat.errorfloatDHI[6/165.5] Distance estimate (2)Mpcpos.distancefloatlogMHI[6.45/9.22] Log, H I mass (3)log(solMass)phys.massfloate_logMHI[0.08/0.72] Uncertainty in logMHIlog(solMass)stat.errorfloatlogMstar[5.64/8.57] Log, stellar mass (4)log(solMass)phys.massfloate_logMstar[0.2/0.75] Uncertainty in logMstarlog(solMass)stat.errorfloatlogMbary[6.68/9.41] Log, baryonic mass, 1.33*MHI+Mstarlog(solMass)phys.massfloate_logMbary[0.08/0.72] Uncertainty in logMbarylog(solMass)stat.errorfloatReff[0.2/5.85] Effective radius using reff (Table 1) and DHIkpcphys.size.radiusfloate_Reff[0.02/0.62] Uncertainty in Reffkpcstat.errorfloatJ/ApJ/902/39/table4HI properties of non-detectionsSMDGAdopted SMUDGes UDG candidate name (HHMMSSs+DDMMSS; J2000)meta.id;meta.maincharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintf_SMDGFlag on upper limit, *= Offset in GBT pointing (see Table 1)meta.codecharDlim[3.8/100.0] Adopted distance (1)Mpcpos.distance;pos.heliocentricfloatr_DlimSource for Dlim (2)meta.ref;pos.framecharlogMHIlim[5.94/8.8] 5{sigma} upper limit on MHIlog(solMass)phys.massfloatMHIlim/Lg[0.25/3.5] Upper limit on the gas richnesssolMass/solLumphys.composition.massLightRatiofloatJ/ApJ/902/39/table5Inclinations and rotation velocitiesSMDGAdopted SMUDGes UDG candidate name (HHMMSSs+DDMMSS; J2000)meta.id;meta.maincharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintOTObject type: UDG or foreground dwarfsrc.classcharsSet[1/2] Object type (1)meta.code.classintiGF[33/69] Inclination calculated using Eq.4 (2)degsrc.orbital.inclination;meta.modelledintVGF[3/53] Rotational velocity (3)km/sphys.veloc.rotatintiBTFR[4/20]? Inclination required to lie on the BTFR (4)degsrc.orbital.inclinationintnullable