J/ApJ/907/22ivo://CDS.VizieR/J/ApJ/907/22doi:10.26093/cds/vizier.19070022CDSTomicic N.Vulcani B.Poggianti B.M.Mingozzi M.Werle A.Bettoni D.,Franchetto A.Gullieuszik M.Moretti A.Fritz J.Bellhouse C.2022-08-26T06:32:42Z2022-06-15T08:33:55ZCDS support team

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

cds-question@unistra.frgalaxy-clustersinterstellar-mediumstar-forming-regionsThe diffuse ionized gas (DIG) is an important component of the interstellar medium, and it can be affected by many physical processes in galaxies. Measuring its distribution and contribution in emission allows us to properly study both its ionization and star formation in galaxies. Here, we measure for the first time the DIG emission in 38 gas-stripped galaxies in local clusters drawn from the GAs Stripping Phenomena in galaxies with the MUSE survey (GASP). These galaxies are at different stages of stripping. We also compare the DIG properties to those of 33 normal galaxies from the same survey. To estimate the DIG fraction (CDIG) and derive its maps, we combine the attenuation-corrected H{alpha} surface brightness with the [SII]/H{alpha} line ratio. Our results indicate that we cannot use either a single H{alpha} or [SII]/H{alpha} value, or a threshold in equivalent width of H{alpha} emission line to separate spaxels dominated by DIG and non-DIG emission. Assuming a constant surface brightness of the DIG across galaxies underestimates CDIG. Contrasting stripped and nonstripped galaxies, we find no clear differences in CDIG. The DIG emission contributes between 20% and 90% of the total integrated flux and does not correlate with the galactic stellar mass and star formation rate (SFR). The CDIG anticorrelates with the specific SFR, which may indicate an older (>108yr) stellar population as the ionizing source of the DIG. The DIG fraction shows anticorrelations with the SFR surface density, which could be used for a robust estimation of integrated CDIG in galaxies.2021ApJ...907...22Thttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/907/22CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/ApJ/661/801 : Survey for ionization neutral gas galaxies. III. (Oey+, 2007)J/ApJ/704/842 : VIRUS-P spectroscopy of NGC 5194 (Blanc+, 2009)J/MNRAS/416/727 : Padova-Millennium Galaxy and Group Catalogue (Calvi+, 2011)J/ApJS/208/10 : Effects of {kappa}-distribution in HII regions (Dopita+, 2013)J/A+A/581/A41 : OmegaWINGS BV photometry galaxy clusters (Gullieuszik+, 2015)J/A+A/640/A22 : Jellyfish galaxy JO201 JVLA datacube (Ramatsoku+, 2020)J/ApJ/895/106 : GAs Stripping Phenomena galaxies with MUSE (Franchetto+, 2020)J/ApJ/899/13 : GASP. XXI. Star forming rate 54 galaxies (Gullieuszik+, 2020)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/907/22https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/907/22http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/907/22https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/907/22https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/907/22http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/907/22GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/907/22/table1 (Galaxies from the control sample)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/907/22/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/907/22/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/907/22/table1?GETtext/xml+votable180.050000true51.8795417-52.98545970.005555555555555556Cone search capability for table J/ApJ/907/22/table2 (Stripped galaxies)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/907/22/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/907/22/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/907/22/table2?GETtext/xml+votable180.050000true14.42341-1.31218860.0055555555555555566/8788 16434 16765 16767 17237 17448 18009 18011 18014 18017 18019 18035 18411 18607 18965 19130 19987 19993 20021 20083 20483 24637 24943 25042 26005 26027 26198 26202 26732 26771 26966 26982 27023 27030 27072 27224 27236 27239 28005 33241 33625 33628 33649-33650 34805 43830 43836 43838-43839 43924 43939 43942 43945 43950 43977 45981 45984 46652 46997https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/907/22?format=asciidefaultJ/ApJ/907/22/table1Galaxies from the control sampleSimbadNameSimbad column added by the CDSmeta.idcharnullableIDIdentifiermeta.id;meta.maincharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSsfr[0.001/0.02] star-formation rate surface densitysolMass.yr**-1.kpc**-2arith.rate;phot.flux.density.sbfloatbeta[0.39/1] The {beta} value; equation 6 (1)stat.valuefloate_beta[0.01/0.2] The 3{sigma} uncertainty in betastat.errorfloatlogf0[37.8/38.6] log f_0_ value; equation 6 (1)log(1e-07W.kpc**-2)stat.valuefloate_logf0[0.01/0.1] The 3{sigma} uncertainty in logf0log(1e-07W.kpc**-2)stat.errorfloatCDIG[0.22/0.9] Diffuse disk ionized gas fractionphys.mass;arith.ratiofloate_CDIG[0.03/0.14] 3{sigma} uncertainty in CDIG (2)stat.errorfloatArea[0.57/0.98] Spatial fractions of spaxels that have CDIG>0.3 within diskstat.fit.paramfloate_Area[0/0.03] 3{sigma} uncertainty in Area (3)stat.error;phys.areafloat_RAPosition from SIMBAD (right ascension part)degpos.eq.ra;meta.main_DEPosition from SIMBAD (declination part)degpos.eq.dec;meta.mainJ/ApJ/907/22/table2Stripped galaxiesSimbadNameSimbad column added by the CDSmeta.idcharnullableIDIdentifiermeta.id;meta.maincharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSsfr[0.002/0.2151] star-formation rate surface densitysolMass.yr**-1.kpc**-2arith.rate;phot.flux.density.sbfloatbeta[0.3/0.96] The {beta} value; equation 6 (1)stat.valuefloate_beta[0.01/0.3] 3{sigma} uncertainty in betastat.errorfloatlogf0[37.8/39.1] log f_0_ value; equation 6 (1)log(1e-07W.kpc**-2)stat.valuefloate_logf0[0.02/0.3] 3{sigma} uncertainty in logf0log(1e-07W.kpc**-2)stat.errorfloatCDIG[0.13/0.9] Diffuse disk ionized gas fractionphys.mass;arith.ratiofloate_CDIG[0.03/0.1] 3{sigma} uncertainty in CDIG (2)stat.errorfloatArea[0.53/1] Spatial fractions of spaxels that have CDIG>0.3 within diskstat.fit.paramfloate_Area[0/0.04] 3{sigma} uncertainty in Area (3)stat.error;phys.areafloat_RAPosition from SIMBAD (right ascension part)degpos.eq.ra;meta.main_DEPosition from SIMBAD (declination part)degpos.eq.dec;meta.main