J/AJ/156/295ivo://CDS.VizieR/J/AJ/156/295doi:10.26093/cds/vizier.51560295CDSPetric A.O.Armus L.Flagey N.Guillard P.Howell J.Inami H.,Charmandaris V.Evans A.Stierwalt S.Diaz-Santos T.Lu N.Spoon H.,Mazzarella J.Appleton P.Chan B.Chu J.Hand D.Privon G.Sanders D.,Surace J.Xu K.Zhao Y.2019-05-13T08:04:26Z2019-05-09T12:48:09ZCDS support team

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

cds-question@unistra.frgalaxiesinfrared-sourcesatomic-physicsinfrared-astronomyspectroscopyMid-infrared molecular hydrogen (H_2_) emission is a powerful cooling agent in galaxy mergers and in radio galaxies; it is a potential key tracer of gas evolution and energy dissipation associated with mergers, star formation, and accretion onto supermassive black holes. We detect mid-IR H_2_ line emission in at least one rotational transition in 91% of the 214 Luminous Infrared Galaxies (LIRGs) observed with Spitzer as part of the Great Observatories All-sky LIRG Survey. We use H_2_ excitation diagrams to estimate the range of masses and temperatures of warm molecular gas in these galaxies. We find that LIRGs in which the IR emission originates mostly from the Active Galactic Nuclei (AGN) have about 100 K higher H_2_ mass-averaged excitation temperatures than LIRGs in which the IR emission originates mostly from star formation. Between 10% and 15% of LIRGs have H_2_ emission lines that are sufficiently broad to be resolved or partially resolved by the high-resolution modules of Spitzer's Infrared Spectrograph (IRS). Those sources tend to be mergers and contain AGN. This suggests that a significant fraction of the H_2_ line emission is powered by AGN activity through X-rays, cosmic rays, and turbulence. We find a statistically significant correlation between the kinetic energy in the H_2_ gas and the H_2_ to IR luminosity ratio. The sources with the largest warm gas kinetic energies are mergers. We speculate that mergers increase the production of bulk inflows leading to observable broad H_2_ profiles and possibly denser gas.2018AJ....156..295Phttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/156/295CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/A+A/434/149 : NIR spectroscopy of luminous IR galaxies (Valdes+, 2005)J/A+A/451/57 : Luminous IR galaxies mid-infrared propertiesJ/ApJ/669/959 : Warm molecular hydrogen in SINGS galaxy sampleJ/MNRAS/395/1695 : Spitzer mid-IR spectroscopy of LIRGsJ/ApJ/709/884 : Role of starburst-AGN composites in LIRG mergersJ/ApJ/723/993 : Spatial extent of (U)LIRGs in the MIR. I.J/ApJ/741/32 : Spatial extent of (U)LIRGs in the MIR. II.J/ApJ/777/156 : Spitzer/IRS spectra of GOALS luminous IR galaxiesJ/ApJS/206/1 : Mid-IR properties of GOALS nearby LIRGs (Stierwalt+, 2013)J/ApJ/790/124 : Dust and gas physics of the GOALS sample (Stierwalt+, 2014)J/ApJ/846/32 : Herschel FIR spectra of GOALS galaxies (Diaz-Santos+, 2017)J/A+A/617/A130 : Luminous infrared galaxies AKARI 2.5-5um data (Inami+, 2018)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/156/295https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/156/295http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/156/295https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/156/295https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/156/295http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/156/295GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/AJ/156/295/table2 (H_2_ fluxes)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/156/295/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/156/295/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/156/295/table2?GETtext/xml+votable180.050000true2.472325.9240.005555555555555556Cone search capability for table J/AJ/156/295/table5 (Masses and temperatures of warm molecular gas as estimated from MIR spectroscopy)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/156/295/table5?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/156/295/table5?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/156/295/table5?GETtext/xml+votable180.050000true2.4725.9240.0055555555555555566/226 231 286 295 538 627 629 650 700 1276 1521 1677 1701 1702 1865 1918 2309 2363 2433 2518 2680 3364 3446 3824 3934 4993 5116 5130 5523 5816 5865 6098 6348 6781 7552 8106 8111 8266 8482 8562 8673 8997 9133 9770 10081 10144 10210 10281 10404 10453 10465 10628 10716 11029 11101 11180 11206 11908 12537 13021 13184 13523 13632 14164 15323 15333 15570 16045 16091 16690 16755 16758 17075 17183 17252 17492 17506 17736 17904 18406 18432 18714 18753 18897 18932 19283 19619 20118 20208 20254 20371 20895 20896 21016 21416 21747 22468 22721 22792 23339 23921 24123 24144 24163 24232 24293 24584 24631 24855 24958 25462 25610 26028 26035 26198 26264 26298 26324 26811 26932 27340 27537 28188 28393 28999 29439 29680 29937 30027 30383 30580 30810 30822 30879 31081 31158 31430 31503 32187 32548 32740 34010 34397 34531 34627 34695 35067 35576 35602 35608 37113 37559 37564 37821 38129 38139 38246 38285 38786 38935 39472 39960 40082 40801 41276 41402 41430 42010 42855 43078 43082 43107 43147 43298 43389 43564 43925 43994 44626 44671 45387 46077 46079 46130 46399 46794 46811 46882 47029 47162 47235 47543 47854 48665https://cdsarc.cds.unistra.fr/viz-bin/moc/J/AJ/156/295?format=asciiInfrareddefaultJ/AJ/156/295/table1*H_2_ rotational transitionsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintTransShort notation of H_2_ transitionphys.atmol.transProb;phys.atmol.transitioncharJ0[2/9] Upper J quantum number (1)instr.det.qe;stat.maxintJ1[0/7] Lower J quantum number (1)instr.det.qe;stat.minintlambda[5.511/28.219] Transition rest wavelengthumem.wl;phys.atmol.transitionfloatEu/k[510/7197] Rotational upper energy (2)Kphys.energy;phys.mol.rotationintA[0.00029/2] Transition probability from Black & Dalgarno 1976ApJ...203..132B; Roussel et al. 2007, J/ApJ/669/9591e-07s**-1phys.atmol.transProbdoubleg[5/57] Statistical weight for the transitionJstat.weight;phys.atmolintJ/AJ/156/295/table2H_2_ fluxesSimbadNameSimbad column added by the CDSmeta.idcharNameGalaxy identifiermeta.id;meta.maincharl_S(0)[<] Limit flag on S(0)meta.code.errorcharS(0)[1/225] H_2_ S(0) rotational emission line flux1e-18W.m**-2phot.flux;phys.mol.rotationintrecnoRecord 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.maine_S(0)[1/286]? Uncertainty in S(0) flux1e-18W.m**-2stat.errorintnullablel_S(1)[<] Limit flag on S(1) fluxmeta.code.errorcharS(1)[4/470] H_2_ S(1) rotational emission line flux1e-18W.m**-2phot.flux;phys.mol.rotationinte_S(1)[1/16]? Uncertainty in S(1) flux1e-18W.m**-2stat.errorintnullablel_S(2)[<] Limit flag on S(2) fluxmeta.code.errorcharS(2)[2/332] H_2_ S(2) rotational emission line flux1e-18W.m**-2phot.flux;phys.mol.rotationinte_S(2)[1/104]? Uncertainty in S(2) flux1e-18W.m**-2stat.errorintnullablel_S(3)[<] Limit flag on S(3) fluxmeta.code.errorcharS(3)[2/672]? H_2_ S(3) rotational emission line flux1e-18W.m**-2phot.flux;phys.mol.rotationintnullablee_S(3)[1/17]? Uncertainty in S(3) flux1e-18W.m**-2stat.errorintnullableMergerMerger stage (1)meta.code;src.morphcharJ/AJ/156/295/table4General properties of galaxies where the H_2_ S(1) is resolved or marginally resolvedrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameGalaxy identifiermeta.id;meta.maincharFWHM[583/1318] S(1) full-width at half-maximumkm/sspect.line.widthintFWHMi[281/1215] Intrinsic S(1) full-width at half-maximumkm/sspect.line.widthinte_FWHMi[35/173] Uncertainty in FWHMikm/sstat.errorint[NeV][0/1] [Ne V] detection flag (1=detected; 0=not detected)meta.codeint[OIV][0/1] [O IV] detection flag (1=detected; 0=not detected)meta.codeintJ/AJ/156/295/table5Masses and temperatures of warm molecular gas as estimated from MIR spectroscopyrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameGalaxy identifiermeta.id;meta.maincharONameOther galaxy identifiermeta.idcharRAJ2000Right Ascension in decimal degrees (J2000)degpos.eq.ra;meta.mainDEJ2000Declination in decimal degrees (J2000)degpos.eq.dec;meta.mainT1[15/650] Temperature of first gas componentKphys.temperatureintlogM1[5.77/9.228] Log mass of first gas componentlog(solMass)phys.massfloatT2[11/863]? Temperature of second gas componentKphys.temperatureintnullablelogM2[5.305/8.869]? Log mass of second gas componentlog(solMass)phys.massfloatnullableTavg[46/650] Mass averaged temperatureKphys.temperatureintlogMtot[5.77/9.253] Total warm H_2_ gas masslog(solMass)phys.massfloat