J/A+A/607/A110ivo://CDS.VizieR/J/A+A/607/A110doi:10.26093/cds/vizier.36070110CDSLisenfeld U.Alatalo K.Zucker C.Appleton P.N.Gallagher S.,Guillard P.Johnson K.2018-11-30T08:06:57Z2017-11-22T06:21:59ZCDS support team

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

cds-question@unistra.frco-line-emissiongalaxiesinfrared-sourcesinterstellar-mediumCompact groups (CGs) provide an environment in which interactions between galaxies and with the intra-group medium enable and accelerate galaxy transitions from actively star forming to quiescent. Galaxies in transition from active to quiescent can be selected, by their infrared (IR) colors, as canyon or infrared transition zone (IRTZ) galaxies. We used a sample of CG galaxies with IR data from the Wide Field Infrared Survey Explorer (WISE) allowing us to calculate the stellar mass and star formation rate (SFR) for each galaxy. Furthermore, we present new CO(1-0) data for 27 galaxies and collect data from the literature to calculate the molecular gas mass for a total sample of 130 galaxies. This data set allows us to study the difference in the molecular gas fraction (Mmol/Mstar) and star formation efficiency (SFE=SFR/Mmol) between active, quiescent, and transitioning (i.e., canyon and IRTZ) galaxies. We find that transitioning galaxies have a mean molecular gas fraction and a mean SFE that are significantly lower than those of actively star-forming galaxies. The molecular gas fraction is higher than that of quiescent galaxies, whereas the SFE is similar. These results indicate that the transition from actively star-forming to quiescent in CG galaxies goes along with a loss of molecular gas, possibly due to tidal forces exerted from the neighboring galaxies or a decrease in the gas density. In addition, the remaining molecular gas loses its ability to form stars efficiently, possibly owing to turbulence perturbing the gas, as seen in other, well-studied examples such as Stephan's Quintet and HCG 57. Thus, the amount and properties of molecular gas play a crucial role in the environmentally driven transition of galaxies from actively star forming to quiescent.2017A&A...607A.110Lhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/607/A110CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/A+A/534/A102 : AMIGA IX. Molecular gas properties (Lisenfeld+, 2011)J/A+A/540/A96 : Molecular gas in HCG (Martinez-Badenes+, 2012)J/A+A/570/A24 : CO in HCG galaxies with enhanced warm H_2_ (Lisenfeld+, 2014)J/ApJ/821/113 : HCG and RSCG compact group galaxies with WISE (Zucker+, 2016)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/607/A110https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/607/A110http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/607/A110https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/607/A110https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/607/A110http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/607/A110GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/607/A110/table2 (Molecular gas, SFR and stellar mass)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/607/A110/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/607/A110/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/607/A110/table2?GETtext/xml+votable180.050000true6.524799225.71924780.0055555555555555566/2254 2276 4215 4433 4966 4990 7442 7547 8557 8627 8935 8938 9417 10528 10637 11002 11666 13511 16112 16690 16784 17245 17492 17525 17866 18071 18168 18757 19538 19619 19626 19661 20031 20289 20325 21218 22590 22772 23028 23182 24126 25721 25842 26451 27174 27226 27282 27620 27736 27803 27872 28146 28271 28278 28377 28515 30044 36446 36468 36621 36713 36740 38853 46987 47027 49121https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/607/A110?format=asciiRadioInfrareddefaultJ/A+A/607/A110/table2Molecular gas, SFR and stellar massSimbadNameSimbad column added by the CDSmeta.idcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameName of the galaxymeta.id;meta.maincharDistDistance (based on H_0_=70km/s/Mpc)Mpcpos.distancefloatl_logMmol0Upper limit code for logMmol0 (2)meta.code.errorcharlogMmol0Decimal logarithm of the molecular gas mass in the central pointinglog(solMass)phys.massfloatl_logMmolUpper limit code for logMmol (2)meta.code.errorcharlogMmolDecimal logarithm of the molecular gas mass extrapolated to the entire disklog(solMass)phys.massfloatRefReference code for the CO measurement from which Mmol is calculated (1)meta.noteintSFRStar formation ratesolMass/yrphys.SFRfloatlogMstarDecimal logarithm of the stellar masslog(solMass)phys.massfloatNEDNED column added by the CDSmeta.ref.urlchar_RARight Ascension (J2000) from SIMBAD (not part of the original data)degpos.eq.ra;meta.main_DEDeclination (J2000) from SIMBAD (not part of the original data)degpos.eq.dec;meta.main