J/MNRAS/500/1261ivo://CDS.VizieR/J/MNRAS/500/1261doi:10.26093/cds/vizier.75001261CDSChown R.Li C.Parker L.Wilson C.D.Li N.Gao Y.2024-08-21T20:16:42Z2023-11-09T09:32:49ZCDS support team

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

cds-question@unistra.frgalaxieschemically-peculiar-starsextinctionstar-forming-regionsinfrared-astronomyvisible-astronomyradio-astronomyA relationship between dust-reprocessed light from recent star formation and the amount of star-forming gas in a galaxy produces a correlation between Wide-field Infrared Survey Explorer (WISE) 12{mu}m emission and CO line emission. Here, we explore this correlation on kiloparsec scales with CO(1-0) maps from EDGE-CALIFA matched in resolution to WISE 12{mu}m images. We find strong CO-12{mu}m correlations within each galaxy and we show that the scatter in the global CO-12{mu}m correlation is largely driven by differences from galaxy to galaxy. The correlation is stronger than that between star formation rate and H_2_ surface densities [{Sigma}(H_2_)]. We explore multivariable regression to predict {Sigma}(H_2_) in star-forming pixels using the WISE 12{mu}m data combined with global and resolved galaxy properties, and provide the fit parameters for the best estimators. We find that {Sigma}(H_2_) estimators that include {Sigma}(12{mu}m) are able to predict {Sigma}(H_2_) more accurately than estimators that include resolved optical properties instead of {Sigma}(12{mu}m). These results suggest that 12{mu}m emission and H_2_ as traced by CO emission are physically connected at kiloparsec scales. This may be due to a connection between polycyclic aromatic hydrocarbon emission and the presence of H_2_. The best single-property estimator is log({Sigma}(H_2_)/M_{sun}_pc^-2^)= (0.48+/-0.01)+(0.71+/-0.01)log({Sigma}(12{mu}m)/L_{sun}_pc^-2^). This correlation can be used to efficiently estimate {Sigma}(H_2_) down to at least 1M_{sun}_pc^-2^ in star-forming regions within nearby galaxies.2021MNRAS.500.1261Chttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/500/1261CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/ApJ/846/159 : Interferometric CO obs. of 126 CALIFA galaxieshttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/500/1261https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/500/1261http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/500/1261https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/500/1261https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/500/1261http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/500/1261GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/500/1261/global (Global properties of the galaxies in our sample)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/500/1261/global?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/500/1261/global?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/500/1261/global?GETtext/xml+votable180.050000true233.738723.50290.0055555555555555566/975 2229 2254 2273-2274 2290 2641 4167 4178 4342 4445 4507 4511 4813 4840 4843 4950 4993 5332 5593 6214 6240 6261 6270 6342 6977 7214 7309 7340 7591 7824 7834 8480 8492 8498 8552 8563 8646 8673 8743 9124 9187 9216 9220 9381 9622 9628 9718 9875 9882-9883 9885 9974 10025 10200 10213 10280 10380-10381 10515 10566 10583 10588 10612 10628-10629 10705 10739-10740 10752 10778 10846 10987 11070 11164 11196 11290 11372 11374 11832 11944 18779 20417 26495 28322 28458 28491 28617 31642 31689 31736 32462https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/500/1261?format=asciiOpticalInfraredRadiodefaultJ/MNRAS/500/1261/globalGlobal properties of the galaxies in our sampleSimbadNameSimbad column added by the CDSmeta.idcharnullableNameGalaxy namemeta.id;meta.maincharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintlogSFUV? Logarithm of the far-UV surface density {Sigma}_FUV_log(1e+35W.kpc**-2)phot.flux.density.sbfloatnullableNxNumber of pixels in the x-directionmeta.numberintlogSNUV? Logarithm of the near-UV surface density {Sigma}_NUV_log(1e+35W.kpc**-2)phot.flux.density.sbfloatnullablelogSW4? Logarithm of the WISE W4 (22{mu}m) surface density {Sigma}_W4_log(1e+35W.kpc**-2)phot.flux.density.sbfloatnullablelogSM*Logarithm of the stellar mass surface density {Sigma}_M*_log(solMass.kpc**-2)phys.densityfloatAV? Extinction measured from the Balmer decrementmagphys.absorptionfloatnullableb/a? Minor-to-major axial ratio from CALIFA synthetic photometryphys.angSize;arith.ratiofloatnullableB/T? Bulge-to-total ratio from g-band photometryphot.mag.sb;arith.ratiofloatnullable12+logO/H? Gas phase metallicityphys.abundfloatnullablen? Sersic index from g-band photometrystat.fit.paramfloatnullableu-rColour from CALIFA synthetic photometry (SDSS filters applied to extinction-corrected spectra)magphot.color;em.opt.U;em.opt.Rfloatlogsigma? Logarithm of the bulge velocity dispersionlog(km.s**-1)phys.veloc.dispersionfloatnullablelogcosiLogarithm of the cosine of the inclinationphys.size.axisRatiodoublelogSTIR? Logarithm of the total-IR (8-1000{mu}m) surface density {Sigma}_TIR_log(1e+35W.kpc**-2)phot.flux.density.sbfloatnullablelogDMpcLogarithm of the luminosity distance from Bolatto et al. (2017ApJ...846..159B, Cat. J/ApJ/846/159)log(Mpc)pos.distancefloatlogSSFRLogarithm of the star formation rate surface density {Sigma}_SFR_log(solMass.yr**-1.kpc**-2)phys.SFRfloatAreaOptical surface area (1)kpc**2phys.areadoubleNyNumber of pixels in the y-directionmeta.numberintRAJ2000Right ascension (J2000) from LEDAdegpos.eq.ra;meta.mainDEJ2000Declination (J2000) from LEDAdegpos.eq.dec;meta.mainxcX-coordinate (0-indexed) of center of fieldpos.cartesian.x;instr.platefloatycY-coordinate (0-indexed) of center of fieldpos.cartesian.y;instr.platefloatJ/MNRAS/500/1261/resolvedQuantities derived from spatially-resolved optical IFU and molecular gas mapsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintID[0/25320] Pixel IDmeta.idintNameName of the galaxy that this pixel belongs tometa.id;meta.maincharfCO[0/1] Flag indicating whether the CO measurement with the Simple method is a detection or an upper limit (1)meta.codecharbptBPT classification (2)meta.code.classcharAreaArea of the pixelkpc**2phys.areafloat12+logO/H? Gas phase metallicityphys.abundfloatnullablealphaCO? CO-to-H_2_ conversion factor from this metallicity {alpha}_CO_arith.factorfloatnullablef_logSM*[*] Flag on logSM* (3)meta.codecharlogLCO? Logarithm of the CO luminosity using the Sun method, including all pixelslog(K.pc**2.km.s**-1)phys.luminosityfloatnullablelogSM*? Logarithm of the stellar mass surface density {Sigma}_M*_log(solMass.pc**-2)phys.densityfloatnullablelogSSFR? Logarithm of the star formation rate surface density {Sigma}_SFR_log(solMass.yr**-1.kpc**-2)phys.SFRfloatnullablee_logSSFR? Error on logSSFRlog(solMass.yr**-1.kpc**-2)stat.errorfloatnullableAV? Extinction measured from the Balmer decrementmagphys.absorptionfloatnullablee_logLCO[]? Error on logLCOlog(K.pc**2.km.s**-1)stat.errorfloatnullablelogLCOsim? Logarithm of the CO luminosity using the Simple method, including all pixelslog(K.pc**2.km.s**-1)phys.luminosityfloatnullablee_logLCOsim[]? Error on logLCOsimlog(K.pc**2.km.s**-1)stat.errordoublenullablelogSH2? Logarithm of the H_2_ surface density using the Sun method, including all pixels, assuming {alpha}_CO_=3.2log(solMass.pc**-2)src.densityfloatnullablee_logSH2[]? Error on logSH2log(solMass.pc**-2)stat.errorfloatnullablelogSH2sim? Logarithm of the H_2_ surface density using the Simple method, including all pixels, assuming {alpha}_CO_=3.2log(solMass.pc**-2)src.densityfloatnullablee_logSH2sim[]? Error on logSH2simlog(solMass.pc**-2)stat.errordoublenullablelogSH2amet? Logarithm of the H_2_ surface density using the Sun method, only star-forming pixels, assuming metallicity-dependent {alpha}_CO_log(solMass.pc**-2)src.densityfloatnullablee_logSH2amet[]? Error on logSH2ametlog(solMass.pc**-2)stat.errorfloatnullablef_logL12[*] Flag on logL12 (3)meta.codecharlogL12? Logarithm of the 12{mu}m luminositylog(solLum)phys.luminosity;em.IR.8-15umfloatnullablee_logL12[]? Error on logL12log(solLum)stat.errordoublenullablef_logS12[*] Flag on logS12 (3)meta.codecharlogS12? Logarithm of the 12{mu}m surface densitylog(solLum.pc**-2)src.densityfloatnullablee_logS12[]? Error on logS12log(solLum.pc**-2)stat.errordoublenullable