J/ApJ/901/L8ivo://CDS.VizieR/J/ApJ/901/L8doi:10.26093/cds/vizier.19019008CDSSun J.Leroy A.K.Schinnerer E.Hughes A.Rosolowsky E.Querejeta M.,Schruba A.Liu D.Saito T.Herrera C.N.Faesi C.Usero A.Pety J.,Kruijssen J.M.D.Ostriker E.C.Bigiel F.Blanc G.A.Bolatto A.D.,Boquien M.Chevance M.Dale D.A.Deger S.Emsellem E.Glover S.C.O.,Grasha K.Groves B.Henshaw J.Jimenez-Donaire M.J.Kim J.J.,Klessen R.S.Kreckel K.Lee J.C.Meidt S.Sandstrom K.Sardone A.E.,Utomo D.Williams T.G.2022-08-25T11:44:43Z2022-02-23T12:52:36ZCDS support team

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

cds-question@unistra.frmillimeter-astronomysubmillimeter-astronomyco-line-emissiongalaxiesmolecular-physicsgalaxy-kinematicsUsing the PHANGS-ALMA CO(2-1) survey, we characterize molecular gas properties on ~100pc scales across 102,778 independent sightlines in 70 nearby galaxies. This yields the best synthetic view of molecular gas properties on cloud scales across the local star-forming galaxy population obtained to date. Consistent with previous studies, we observe a wide range of molecular gas surface densities (3.4dex), velocity dispersions (1.7dex), and turbulent pressures (6.5dex) across the galaxies in our sample. Under simplifying assumptions about subresolution gas structure, the inferred virial parameters suggest that the kinetic energy of the molecular gas typically exceeds its self-gravitational binding energy at ~100pc scales by a modest factor (1.3 on average). We find that the cloud-scale surface density, velocity dispersion, and turbulent pressure (1) increase toward the inner parts of galaxies, (2) are exceptionally high in the centers of barred galaxies (where the gas also appears less gravitationally bound), and (3) are moderately higher in spiral arms than in inter-arm regions. The galaxy-wide averages of these gas properties also correlate with the integrated stellar mass, star formation rate, and offset from the star-forming main sequence of the host galaxies. These correlations persist even when we exclude regions with extraordinary gas properties in galaxy centers, which contribute significantly to the inter-galaxy variations. Our results provide key empirical constraints on the physical link between molecular cloud populations and their galactic environment.2020ApJ...901L...8Shttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/901/L8CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/ApJ/551/852 : FCRAO CO survey of the outer Galaxy (Heyer+, 2001)J/ApJ/686/948 : CO in extragalactic giant molecular clouds (Bolatto+, 2008)J/ApJ/772/107 : Giant molecular clouds in nearby gal. (Donovan Meyer+, 2013)J/ApJ/784/3 : The PAWS catalogs of GMCs and islands in M51 (Colombo+, 2014)J/A+A/582/A86 : Catalogue of features in the S4G (Herrera-Endoqui+, 2015)J/ApJS/219/4 : S4G pipeline 4: multi-component decompositions (Salo+, 2015)J/ApJ/834/57 : MW molecular clouds from ^12^CO (Miville-Deschenes+, 2017)J/AJ/156/18 : APOGEE:Binary companions of evolved stars (Price-Whelan+, 2018)J/ApJ/860/172 : Cloud-scale molecular gas properties in 15 gal. (Sun+, 2018)J/ApJ/897/122 : Rotational velocities for PHANGS sample of gal. (Lang+, 2020)J/ApJ/892/148 : Molecular ISM in nearby star-forming galaxies (Sun+, 2020)http://www.phangs.org/ : PHANGS survey home pagehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/901/L8https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/901/L8http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/901/L8https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/901/L8https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/901/L8http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/901/L8GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/901/L8/tablea1 (Galaxy sample)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/901/L8/tablea1?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/901/L8/tablea1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/901/L8/tablea1?GETtext/xml+votable180.050000true213.291275-65.33901940.0055555555555555566/4511 16655 17747 18398 20526 20929 22751 24912 25135 25762 25788 25790 26119 26271 26303 26338 26472 27030 27514 27728 27738 27750 27861 27905 27914 27917 27937 27942 27949 28015 28035 28046 28167 28208 28264 28304 33176 33228 33654 33920 33954 33958 34272 34343 34404 34495 34531 34910 35536 35993 36134 36261 38390 38655 38832 40328 40472 41586 42016 43325 43339 44011 44027 45748 46481 46495 46519https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/901/L8?format=asciiMillimeterRadiodefaultJ/ApJ/901/L8/tableb1Table of key measurementsrgal[0/15.16] Galactocentric radiuskpcpos.distance;pos.galactocentricfloatNameGalaxy namemeta.id;meta.maincharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintscale[90/150] CO data resolutionpcspect.resolutionintCent[0/1] Measurement in galaxy centermeta.codeintArm[0/1] Measurement in spiral arm regionmeta.codeintiArm[0/1] Measurement in inter-arm regionmeta.codeintICO21[-0.45/2302] CO(2-1) line integrated intensityK.km/sphot.flux.densitydoubleSigma[-2.5/9733] Molecular gas surface densitysolMass.pc**-2phot.flux.density.sbdoubleVdisp[0.058/177.7] Velocity dispersionkm/sphys.veloc.dispersiondoublePturb[-54.4/1780000000] Turbulent pressureK.cm**-3phys.pressuredoubleaVir[-0.83/137] Virial parameterphys.mass;arith.ratiodoubleJ/ApJ/901/L8/tablea1Galaxy sampleNameGalaxy namemeta.id;meta.maincharprimarySimbadNameSimbad column added by the CDSmeta.idcharnullablerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNmNumber of measurements for this galaxy (link to Table B1)meta.numberintnullablef_NameFlag on individual galaxy (1)meta.codecharBar[YN?] Presence of identifiable stellar bar(s)meta.code;src.morphcharArm[YN] Presence of identifiable spiral arm(s)meta.code;src.morphcharDist[2/26.1] Distance, Tully+ (2009AJ....138..323T)Mpcpos.distance;pos.heliocentricfloati[8.7/75] Galaxy inclination, Lang+ (2020, J/ApJ/897/122)degsrc.orbital.inclinationfloatPAGalaxy position angle, Lang+ (2020, J/ApJ/897/122)degpos.posAngfloatMstar[1.2/83.1] Galaxy global stellar mass1e+09solMasssrc.class.starGalaxyfloatSFR[0.06/14.4] Galaxy global star formation ratesolMass/yrphys.SFRfloatReff[1/12] Galaxy effective (half-mass) radius (2)kpcphys.size.radiusfloatTnoise[0.01/0.1] CO data rms noise at 150pc resolutionKstat.stdev;instr.det.noisefloatrch[0.05/0.2] CO data channel-to-channel correlation at 150pc resolutionstat.correlationfloatNEDNED column added by the CDSmeta.ref.urlcharfCO[28/105] CO flux completeness at 150pc resolution%meta.noteintf_fCOFlag on fCO (3)meta.codecharNlos[76/6438] Number of independent sightlines at 150pc resolutionmeta.numberintL20Display data from Lang+, 2020, J/ApJ/897/122 if anymeta.ref.urlintnullable_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