J/A+A/604/A53ivo://CDS.VizieR/J/A+A/604/A53doi:10.26093/cds/vizier.36040053CDSCicone C.Bothwell M.Wagg J.Moller P.De Breuck C.Zhang Z.,Martin S.Maiolino R.Severgnini P.Aravena M.Belfiore F.Espada D.,Flutsch A.Impellizzeri V.Peng Y.Raj M.A.Ramirez-Olivencia N.,Riechers D.Schawinski K.2018-01-19T10:20:30Z2017-11-27T12:15:20ZCDS support team

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

cds-question@unistra.frgalaxieschemical-abundancesco-line-emissionWe present the final data release of the APEX low-redshift legacy survey for molecular gas (ALLSMOG), comprising CO(2-1) emission line observations of 88 nearby, low-mass (10^8.5^<M_*_[M_{sun}_]<10^10^) star-forming galaxies carried out with the 230GHz APEX-1 receiver on the APEX telescope. The main goal of ALLSMOG is to probe the molecular gas content of more typical and lower stellar mass galaxies than have been studied by previous CO surveys. We also present IRAM 30m observations of the CO(1-0) and CO(2-1) emission lines in nine galaxies aimed at increasing the M_*_<10^9^M_{sun}_ sample size.In this paper we describe the observations, data reduction and analysis methods and we present the final CO spectra together with archival HI 21cm line observations for the entire sample of 97 galaxies. At the sensitivity limit of ALLSMOG, we register a total CO detection rate of 47%. Galaxies with higher M_*_, SFR, nebular extinction (A_V_), gas-phase metallicity (O/H), and HI gas mass have systematically higher CO detection rates.In particular, the parameter according to which CO detections and non-detections show the strongest statistical differences is the gas-phase metallicity, for any of the five metallicity calibrations examined in this work. We investigate scaling relations between the CO(1-0) line luminosity (L'_CO(1-0)_) and galaxy-averaged properties using ALLSMOG and a sub-sample of COLD GASS for a total of 185 sources that probe the local main sequence (MS) of star-forming galaxies and its +/-0.3dex intrinsic scatter from M_*_=10^8.5^M_{sun}_ to M_*_=10^11^M_{sun}_. L'_CO(1-0)_ is most strongly correlated with the SFR, but the correlation with M_*_ is closer to linear and almost comparably tight. The relation between L'_CO(1-0)_ and metallicity is the steepest one, although deeper CO observations of galaxies with A_V_<0.5mag may reveal an as much steep correlation with A_V_. Our results suggest that star-forming galaxies across more than two orders of magnitude in M_*_ obey similar scaling relations between CO luminosity and the galaxy properties examined in this work. Besides SFR, the CO luminosity is likely most fundamentally linked to M_*_, although we note that stellar mass alone cannot explain all of the variation in CO emission observed as a function of O/H and M_HI_.2017A&A...604A..53Chttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/604/A53CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/604/A53https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/604/A53http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/604/A53https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/604/A53https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/604/A53http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/604/A53GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/604/A53/sample (Physical properties of the ALLSMOG galaxy (tables C3 and C4) and HI gas masses (table C5))https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/604/A53/sample?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/604/A53/sample?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/604/A53/sample?GETtext/xml+votable180.050000true311.999583-0.180.0055555555555555566/553 4110 4132 4172 4182 4192 4201 4248-4249 4279 4354-4356 4384 4641 4650 8273 8275 8320 8353 17407 17491 17511 17767 18029 18061 18078 18383 18405 18539 19667 19669-19670 19747 21877 21885 22010 22364 23205 23208 25594 25841 25852-25853 25934 26437 26457 26460 26590 26605 26986-26987 27023 27108 27116 27229 27293 27324 27339 27342-27343 27352-27353 27359 27376 27384 27407 27419 27428 27434 27468 27477 27506 27509 27513 27527 27590 27626 27751 27757 27845 27878 27945 28178 28196 30035 31424 31625 31683 31688 31691 36719https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/604/A53?format=asciiRadiodefaultJ/A+A/604/A53/tablec1Details of the CO observationsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSamp[A I1 I2] Sample (G1)src.samplecharSeq[1/97] ALLSMOG sequential numbermeta.recordintNameGalaxy namemeta.id;meta.mainchartON? On-source time (1)mintime.expointnullablerms? 1{sigma} spectral rms calculated in channels of {delta}v=50km/smJystat.stdev;instr.det.noisefloatnullablev0? Central velocity of the CO emission line with respect to the optical redshift (2)km/sspect.dopplerVeloc.opt;em.line.COintnullablee_v0? rms uncertainty on v0km/sstat.errorintnullablesigma? Velocity dispersion of the observed CO line derived through a single-Gaussian fittingkm/sphys.veloc.dispersion;spect.lineintnullablee_sigma? rms uncertainty on sigmakm/sstat.errorintnullableSpeak? Amplitude of the Gaussian function fitted to the observed CO line profilemJysrc.var.amplitude;em.line.CO;meta.modelledintnullablee_Speak? rms uncertainty on SpeakmJystat.errorintnullablel_Int3{sigma} upper limit flag on Int (3)meta.code.errorcharIntTotal total velocity-integrated flux of the Gaussian function fitted to the observed CO line profileJy.km/sphot.flux.density;em.line.COfloate_Int? rms uncertainty on IntJy.km/sstat.errorfloatnullableJ/A+A/604/A53/tablec2CO luminosity valuese_Beamrms uncertainty on Beamstat.errorfloatrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSamp[A I1 I2] Sample (G1)src.samplecharSeqALLSMOG sequential numbermeta.recordintNameGalaxy namemeta.id;meta.maincharBeamFraction of the expected total CO flux recovered by the beam of the single-dish telescope (1)phot.flux;em.line.CO;instr.beamfloatl_IntLimit flag on Intmeta.code.errorcharIntTotal velocity-integrated CO flux corrected for beam coverage)Jy.km/sphot.fluxfloate_Int? rms uncertainty on IntJy.km/sstat.errorfloatnullablel_L'COLimit flag on L'COmeta.code.errorcharL'COCO line luminosity calculated from the aperture-corrected CO flux listed in Int by using Eq. (8) of the paper1e+08K.km.s**-1.pc**2phys.luminosity;em.line.CO;spect.linefloate_L'CO? rms uncertainty on L'CO1e+08K.km.s**-1.pc**2stat.errorfloatnullableJ/A+A/604/A53/samplePhysical properties of the ALLSMOG galaxy (tables C3 and C4) and HI gas masses (table C5)SimbadNameSimbad column added by the CDSmeta.idcharNameGalaxy namemeta.id;meta.maincharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSamp[A I1 I2] Sample (G1)src.samplecharSeqALLSMOG sequential numbermeta.recordintRAJ2000Right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Declination (J2000)pos.eq.dec;meta.mainzoptOptical spectroscopic redshift extracted from the MPA-JHU catalogue (1)src.redshift;pos.heliocentricfloatDLLuminosity distance according to the adopted CosmologyMpcpos.distancefloatiInclination of the optical disk (2)degspect.dopplerVeloc.opt;em.optfloatd25Optical diameter as defined by the 25th magnitude B-band isophote (2)arcsecphys.angSize;em.opt.BfloatlogM*Stellar mass estimated from optical SDSS observations (1)log(solMass)phys.massfloate_logM*rms uncertainty on logM*log(solMass)stat.errorfloatlogSFRStar formation rate estimated from optical SDSS observations (2)log(solMass.yr**-1)phys.SFRfloate_logSFRrms uncertainty on logSFRlog(solMass.yr**-1)stat.error;phys.SFRfloatMPA-JHU? Gas-phase metallicity derived using the calibration of Tremonti et al. (2004ApJ...613..898T) (12+log(O/H)) (3)phys.abundfloatnullableN2PP04Gas-phase metallicity calculated using the N2 calibration provided of Pettini & Pagel (2004MNRAS.348L..59P) (12+log(O/H)) (3)phys.abundfloatN2M13Gas-phase metallicity calculated using the N2 calibration proposed of Marino et al. (2013, Cat. J/A+A/559/A114) (12+log(O/H)) (3)phys.abundfloatO3N2PP04Gas-phase metallicity calculated using the O3N2 calibration of Pettini & Pagel (2004MNRAS.348L..59P) (12+log(O/H)) (3)phys.abundfloatO3N2M13Gas-phase metallicity calculated using the O3N2 calibration of Marino et al. (2013, Cat. J/A+A/559/A114) (12+log(O/H)) (3)phys.abundfloatl_logMHI[<= ] Limit flag on logMHImeta.code.errorcharlogMHIHI gas mass computed from the integrated HI 21cm emission line flux following Eq. (6) of the paperlog(solMass)meta.bibfloate_logMHI? rms uncertainty on logMHIlog(solMass)stat.errorfloatnullablel_logMHIc[<= ] Limit flag on logMHIcmeta.code.errorcharlogMHIcHI gas mass corrected for self-absorption as explained in Sect. 4.2log(solMass)phys.massfloate_logMHIc? rms uncertainty on logMHIclog(solMass)stat.errorfloatnullableTelRadio telescope used for the HI 21cm observationsinstr.setup;obscharRefReference for the HI 21cm observations used in this workinstr.setupcharNote[+] Note (1)meta.notechar