J/MNRAS/482/1618ivo://CDS.VizieR/J/MNRAS/482/1618doi:10.26093/cds/vizier.74821618CDSCortzen I.Garrett J.Magdis G.Rigopoulou D.Valentino F.,Pereira-Santaella M.Combes F.Alonso-Herrero A.Toft S.Daddi E.,Elbaz D.Gomez-Guijarro C.Stockmann M.Huang J.Kramer C.2024-08-19T20:14:43Z2022-08-05T13:19:36ZCDS support team

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

cds-question@unistra.frgalaxiesstar-forming-regionsinterstellar-mediumWe combine new CO(1-0) line observations of 24 intermediate redshift galaxies (0.03<z<0.28) along with literature data of galaxies at 0<z<4 to explore scaling relations between the dust and gas content using polycyclic aromatic hydrocarbon (PAH) 6.2{mu}m (L_6.2_), CO(L'_CO_), and infrared (L_IR_) luminosities for a wide range of redshifts and physical environments. Our analysis confirms the existence of a universal L_6.2_-L'_CO_ correlation followed by normal star-forming galaxies (SFGs) and starbursts (SBs) at all redshifts. This relation is also followed by local ultraluminous infrared galaxies that appear as outliers in the L_6.2_-L_IR_ and L_IR_-L'_CO_ relations defined by normal SFGs. The emerging tight ({sigma}~0.26dex) and linear ({alpha}=1.03) relation between L_6.2_ and L'_CO_ indicates a L_6.2_ to molecular gas (M_H2_) conversion factor of {alpha}_6.2_=M_H2_/L_6.2_= (2.7+/-1.3)x{alpha}_CO_, where {alpha}_CO_ is the L'_CO_ to M_H2_ conversion factor. We also find that on galaxy integrated scales, PAH emission is better correlated with cold rather than with warm dust emission, suggesting that PAHs are associated with the diffuse cold dust, which is another proxy for M_H2_. Focusing on normal SFGs among our sample, we employ the dust continuum emission to derive M_H2_ estimates and find a constant M_H2_/L_6.2_ ratio of {alpha}_6.2_=12.3M_{sun}_/L_{sun} ({sigma}~0.3dex). This ratio is in excellent agreement with the L'_CO_-based M_H2_/L_6.2_ values for {alpha}_CO_=4.5M_{sun}_/(K km/s/pc^2^) which is typical of normal SFGs. We propose that the presented L_6.2_-L'_CO_ and L_6.2_-M_H2_ relations will serve as useful tools for the determination of the physical properties of high-z SFGs, for which PAH emission will be routinely detected by the James Webb Space Telescope.2019MNRAS.482.1618Chttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/482/1618CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/ApJ/723/895 : IR luminosities and aromatic features of 5MUSES (Wu+, 2010)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/482/1618https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/482/1618http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/482/1618https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/482/1618https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/482/1618http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/482/1618GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/482/1618/table3 (General properties of the 5MUSES sample)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/482/1618/table3?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/482/1618/table3?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/482/1618/table3?GETtext/xml+votable180.050000true33.764583-4.4060280.005555555555555556Cone search capability for table J/MNRAS/482/1618/table4 (Galaxies from the literature with PAH, IR, and/or CO emission)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/482/1618/table4?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/482/1618/table4?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/482/1618/table4?GETtext/xml+votable180.050000true34.79-5.420250.0055555555555555565/1517 1519 2538 2547 4422 6/764 2320 4447 5181 5492 5715 5751 5799 6046-6047 6067 6073 6075 6090-6091 6112 6114 6120 7552 7602 8673 8768 9469 9471 9634-9635 9640-9641 9998 10147 10150-10151 10156-10158 10200 10202 10212-10214 10761 10841 10856 10901 11101 11252 11349 11457 11520-11521 11524 12868 13522 15592 16441 17075 17594 17677 17682-17683 17686 17692 17694-17695 17712-17713 17716 18398 21016 23178 25083 25946 26271 26298 27030 27514 27555 27830 27861 27914 27937 28015 28035 28123 28167 28393 28496 30477 30566 31081 34404 34471 34493 35993 36194 36974 38390https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/482/1618?format=asciidefaultJ/MNRAS/482/1618/table3General properties of the 5MUSES samplerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameSource name (5MUSES NNN)meta.id;meta.maincharRAJ2000Right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Declination (J2000)pos.eq.dec;meta.mainzRedshiftsrc.redshiftfloatL6.2? PAH 6.2um luminosity (1)log(solLum)phys.luminosityfloatnullablee_L6.2? Error on L6.2 (1)log(solLum)stat.errorfloatnullableL7.7? PAH 7.7um luminosity (1)log(solLum)phys.luminosityfloatnullablee_L7.7? Error on L7.7 (1)log(solLum)stat.errorfloatnullableEW6.2? Equivalent width of the PAH 6.2um featureumspect.line.eqWidth;em.IR.4-8umfloatnullablee_EW6.2? Error on EW6.2umstat.errorfloatnullableMstar? Stellar mass (2)log(solMass)phys.massfloatnullableLIRInfrared luminosity (integrated from 8 to 1000um)log(solLum)phys.luminosity;em.IRfloate_LIRError on LIRlog(solLum)stat.errorfloatMdust? Dust masslog(solMass)phys.massfloatnullablee_Mdust? Lower error on Mdustlog(solMass)stat.errorfloatnullableE_Mdust? Upper error on Mdustlog(solMass)stat.error;stat.maxdoublenullableMH2? Molecular gas mass derived using the Mdust-{delta}GDR method (3)log(solMass)phys.massfloatnullableSimbadSimbad column added by the CDSmeta.ref.urlcharJ/MNRAS/482/1618/table4Galaxies from the literature with PAH, IR, and/or CO emissionSimbadNameSimbad column added by the CDSmeta.idcharnullableNameSource namemeta.id;meta.maincharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRAJ2000Right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Declination (J2000)pos.eq.dec;meta.mainz? Redshiftsrc.redshiftfloatnullableL6.2? PAH 6.2um luminositylog(solLum)phys.luminosityfloatnullablee_L6.2? Error on L6.2log(solLum)stat.errorfloatnullableL7.7? PAH 7.7um luminositylog(solLum)phys.luminosityfloatnullablee_L7.7? Error on L7.7log(solLum)stat.errorfloatnullableEW6.2? Equivalent width of the PAH 6.2um featureumspect.line.eqWidth;em.IR.4-8umfloatnullablee_EW6.2? Error on EW6.2umstat.errorfloatnullableMstar? Stellar masslog(solMass)phys.massfloatnullableLIRAperture corrected infrared luminosity (integrated from 8 to 1000um)log(solLum)phys.luminosity;em.IRfloate_LIRError on LIRlog(solLum)stat.errorfloatLineObserved CO linemeta.id;spect.linecharLCO? CO(1-0) luminositylog(solLum)phys.luminosityfloatnullablee_LCO? Error on LCOlog(solLum)stat.errorfloatnullableMdust? Dust masslog(solMass)phys.massfloatnullablee_Mdust? Lower error on Mdustlog(solMass)stat.errorfloatnullableE_Mdust? Upper error on Mdustlog(solMass)stat.error;stat.maxfloatnullableSampleGalaxy sample or selectionsrcchar