J/ApJ/820/83ivo://CDS.VizieR/J/ApJ/820/83doi:10.26093/cds/vizier.18200083CDSScoville N.Sheth K.Aussel H.Vanden Bout P.Capak P.Bongiorno A.,Casey C.M.Murchikova L.Koda J.Alvarez-Marquez J.Lee N.Laigle C.,McCracken H.J.Ilbert O.Pope A.Sanders D.Chu J.Toft S.,Ivison R.J.Manohar S.2019-11-11T22:00:00Z2018-02-13T07:09:34ZCDS support team

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

cds-question@unistra.frgalaxiescatalogsinterstellar-mediumstar-forming-regionsredshiftedmillimeter-astronomysubmillimeter-astronomyALMA Cycle 2 observations of long-wavelength dust emission in 145 star-forming galaxies are used to probe the evolution of the star-forming interstellar medium (ISM). We also develop a physical basis and empirical calibration (with 72 low-z and z~2 galaxies) for using the dust continuum as a quantitative probe of ISM masses. The galaxies with the highest star formation rates (SFRs) at <z>=2.2 and 4.4 have gas masses up to 100 times that of the Milky Way and gas mass fractions reaching 50%-80%, i.e., gas masses 1-4x their stellar masses. We find a single high-z star formation law: SFR=35 M_mol_^0.89^x(1+z)_z=2_^0.95^x(sSFR)_MS_^0.23^ M_{sun}_/yr - an approximately linear dependence on the ISM mass and an increased star formation efficiency per unit gas mass at higher redshift. Galaxies above the main sequence (MS) have larger gas masses but are converting their ISM into stars on a timescale only slightly shorter than those on the MS; thus, these "starbursts" are largely the result of having greatly increased gas masses rather than an increased efficiency of converting gas to stars. At z>1, the entire population of star-forming galaxies has ~2-5 times shorter gas depletion times than low-z galaxies. These shorter depletion times indicate a different mode of star formation in the early universe - most likely dynamically driven by compressive, high-dispersion gas motions - a natural consequence of the high gas accretion rates.2016ApJ...820...83Shttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/820/83CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/A+A/556/A55 : Multi-color photometry of star-forming galaxiesJ/A+A/592/A122 : Starburst galaxies in the COSMOS field (Hinojosa-Goni+, 2016)J/ApJ/839/58 : ALMA submm galaxies multi-wavelength data (Simpson+, 2017)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/820/83https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/820/83http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/820/83https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/820/83https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/820/83http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/820/83GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/820/83/table7 (Mid-z Galaxy in Band 7 (345 GHz))https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/820/83/table7?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/820/83/table7?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/820/83/table7?GETtext/xml+votable180.050000true150.46911.89960.005555555555555556Cone search capability for table J/ApJ/820/83/table8 (High-z Galaxy in Band 6 (240 GHz))https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/820/83/table8?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/820/83/table8?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/820/83/table8?GETtext/xml+votable180.050000true150.032.16270.005555555555555556Cone search capability for table J/ApJ/820/83/table6 (Low-z Galaxy in Band 7 (345 GHz))https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/820/83/table6?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/820/83/table6?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/820/83/table6?GETtext/xml+votable180.050000true149.81572.65030.0055555555555555565/6814 6/27245 272472.283270615984385e-22 2.283270615984385e-22https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/820/83?format=asciiMillimeterdefaultJ/ApJ/820/83/table7Mid-z Galaxy in Band 7 (345 GHz)l_Mmol[<] Limit flag on Mmolmeta.code.errorcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNum[6496/985857] Observation numbermeta.idintRAJ2000Right Ascension in decimal degrees (J2000)degpos.eq.ra;meta.mainDEJ2000Declination in decimal degrees (J2000)degpos.eq.dec;meta.mainzphotPhotometric redshift (1)src.redshiftfloatSTotTotal flux density at 345GHz (Band 7, tables 6,7) and at 240GHz (Band 6, table 8)mJyphot.flux.density;em.mm.200-400GHzfloate_STotUncertainty in STotmJystat.errorfloatSpeakPeak flux density at 345GHz (Band 7, tables 6,7) and at 240GHz (Band 6, table 8)mJyphot.flux.density;em.mm.200-400GHzfloate_SpeakUncertainty in SpeakmJystat.errorfloatS/NSignal-to-noise ratio (2)stat.snrfloatM*Stellar mass (1)1e+11solMassphys.massfloatlogSFRStar formation rate (1)log(solMass.yr**-1)phys.SFRfloatsSFRSpecific star formation rate (SFR/M*) (in sSFR_MS_ units)phys.SFRfloatMmolMolecular gas mass1e+10solMassphys.massfloate_Mmol? Uncertainty in Mmol1e+10solMassstat.errorfloatnullableSimbadSimbad column added by the CDSmeta.ref.urlcharJ/ApJ/820/83/table8High-z Galaxy in Band 6 (240 GHz)recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNum[6496/985857] Observation numbermeta.idintRAJ2000Right Ascension in decimal degrees (J2000)degpos.eq.ra;meta.mainDEJ2000Declination in decimal degrees (J2000)degpos.eq.dec;meta.mainzphotPhotometric redshift (1)src.redshiftfloatSTotTotal flux density at 345GHz (Band 7, tables 6,7) and at 240GHz (Band 6, table 8)mJyphot.flux.density;em.mm.200-400GHzfloate_STotUncertainty in STotmJystat.errorfloatSpeakPeak flux density at 345GHz (Band 7, tables 6,7) and at 240GHz (Band 6, table 8)mJyphot.flux.density;em.mm.200-400GHzfloate_SpeakUncertainty in SpeakmJystat.errorfloatS/NSignal-to-noise ratio (2)stat.snrfloatM*Stellar mass (1)1e+11solMassphys.massfloatlogSFRStar formation rate (1)log(solMass.yr**-1)phys.SFRfloatsSFRSpecific star formation rate (SFR/M*) (in sSFR_MS_ units)phys.SFRfloatl_Mmol[<] Limit flag on Mmolmeta.code.errorcharMmolMolecular gas mass1e+10solMassphys.massfloate_Mmol? Uncertainty in Mmol1e+10solMassstat.errorfloatnullableSimbadSimbad column added by the CDSmeta.ref.urlcharJ/ApJ/820/83/table6Low-z Galaxy in Band 7 (345 GHz)Num[6496/985857] Observation numbermeta.idintrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRAJ2000Right Ascension in decimal degrees (J2000)degpos.eq.ra;meta.mainDEJ2000Declination in decimal degrees (J2000)degpos.eq.dec;meta.mainzphotPhotometric redshift (1)src.redshiftfloatSTotTotal flux density at 345GHz (Band 7, tables 6,7) and at 240GHz (Band 6, table 8)mJyphot.flux.density;em.mm.200-400GHzfloate_STotUncertainty in STotmJystat.errorfloatSpeakPeak flux density at 345GHz (Band 7, tables 6,7) and at 240GHz (Band 6, table 8)mJyphot.flux.density;em.mm.200-400GHzfloate_SpeakUncertainty in SpeakmJystat.errorfloatS/NSignal-to-noise ratio (2)stat.snrfloatM*Stellar mass (1)1e+11solMassphys.massfloatlogSFRStar formation rate (1)log(solMass.yr**-1)phys.SFRfloatsSFRSpecific star formation rate (SFR/M*) (in sSFR_MS_ units)phys.SFRfloatl_Mmol[<] Limit flag on Mmolmeta.code.errorcharMmolMolecular gas mass1e+10solMassphys.massfloate_Mmol? Uncertainty in Mmol1e+10solMassstat.errorfloatnullableSimbadSimbad column added by the CDSmeta.ref.urlchar