J/MNRAS/431/2006ivo://CDS.VizieR/J/MNRAS/431/2006doi:10.26093/cds/vizier.74312006CDSKhramtsova M.S.Wiebe D.S.Boley P.A.Pavlyuchenkov YA.N.2024-07-21T20:14:37Z2014-06-27T16:24:14ZCDS support team

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

cds-question@unistra.frgalaxiesh-ii-regionsinfrared-photometryThe abundance of polycyclic aromatic hydrocarbons (PAHs) in low- and high-metallicity galaxies has been widely discussed since the time when detailed infrared data for extragalactic objects were first obtained. On the scales of entire galaxies, a smaller PAH abundance in lower metallicity galaxies is often observed. We study this relationship for star-forming regions in nearby galaxies, for a sample containing more than 200 HII complexes, using spatially resolved observations from the Herschel Space Observatory and Spitzer Space Telescope. We use a model for the dust emission to estimate the physical parameters (PAH abundance, metallicity, ultraviolet radiation field, etc.) of these complexes. The same correlation of PAH abundance with metallicity, as seen for entire galaxies, is apparently preserved at smaller scales, at least when the Kobulnicky and Kewley metallicity calibration is used. We discuss possible reasons for this correlation, noting that traces of less effective PAH formation in low-metallicity asymptotic giant branch stars should be smeared out by radial mixing in galactic discs. Effective destruction by the harder and more intensive ultraviolet field in low-metallicity environments is qualitatively consistent with our data, as the ultraviolet field intensity, derived from the infrared photometry, is indeed smaller in HII complexes with lower metallicity.2013MNRAS.431.2006Khttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/431/2006CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/ApJ/640/768 : IR sources in the NGC 5291 system (Higdon+, 2006)J/ApJ/686/127 : Starbursts luminosities based on PAH (Weedman+, 2008)J/ApJ/705/885 : PAH in galaxies at z~0.1 (O'Dowd+, 2009)J/A+A/507/713 : Galaxies with strong PAH emission (Haas+, 2009)J/ApJ/701/1965 : Radial dust properties of SINGS galaxies (Munoz-Mateos+, 2009)J/A+A/514/A5 : PAH luminous galaxies at z~1 (Takagi+, 2010)J/A+A/527/A109 : Dust and PAH emission SEDs of disk galaxies (Popescu+, 2011)J/ApJ/729/94 : IR spectroscopy of PAH in 6-15{mu}m band (Ricca+, 2011)J/ApJ/744/20 : S^4^MC project: 6 star forming regions PAHs (Sandstrom+, 2012)J/ApJS/207/7 : Modeling Galactic extinction with dust and PAH (Mulas+, 2013)J/PASJ/65/103 : PAH3.3um/IR luminosity for infrared galaxies (Yamada+, 2013)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/431/2006https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/431/2006http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/431/2006https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/431/2006https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/431/2006http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/431/2006GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/431/2006/HIIreg (Observed and fitting parameters of HII regions)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/431/2006/HIIreg?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/431/2006/HIIreg?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/431/2006/HIIreg?GETtext/xml+votable180.050000true157.231666768.46522220.0055555555555555566/2320 5715 5751 7624 7743 7769 7799 7956 10841 10856 11026-11027 13522 15592-15593 16441 18398 27030 27514 27861 28033 28035 28123 28496 29718 33986 35993 383909.699422546568423e-22 6.185923063528282e-20https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/431/2006?format=asciiInfrareddefaultJ/MNRAS/431/2006/table1Sample of galaxiesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintGalGalaxy namemeta.id;meta.maincharprimaryPropIDSpitzer proposal IDmeta.ref;pos.framecharPropProposer nameobs.observercharMTypeMorphological typesrc.morph.typecharNc[1/23] Number of complexesmeta.numberintRefReference(s), in refs.dat filemeta.ref;pos.frame;meta.filecharResPhysical resolutionkpcpos.angResolutionfloatSimbadSimbad column added by the CDSmeta.ref.urlcharNEDSimbad column added by the CDSmeta.refcharJ/MNRAS/431/2006/refsReferencesBibCodeBibCodemeta.bib.bibcodecharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintAutAuthor's namemeta.bib.authorcharComCommentsmeta.notecharRefReference numbermeta.id;meta.mainintJ/MNRAS/431/2006/HIIregObserved and fitting parameters of HII regionsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintGalGalaxy namemeta.id.parentcharSeqSequential numbermeta.recordintNameHII region name (within galaxy)meta.id;obs.fieldcharf_Name[*] Source added at CDS (1)meta.codecharRAJ2000Right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Declination (J2000)pos.eq.dec;meta.mainRad? Aperture radiusarcsecinstr.fovfloatnullableF3.6? Spitzer/IRAC flux at 3.6ummJyphot.mag;em.IR.3-4umfloatnullablee_F3.6? rms uncertainty on F3.6mJystat.errorfloatnullableF4.5? Spitzer/IRAC flux at 4.5ummJyphot.mag;em.IR.4-8umfloatnullablee_F4.5? rms uncertainty on F4.5mJystat.errorfloatnullableF5.8? Spitzer/IRAC flux at 5.8ummJyphot.flux.density;em.IR.4-8umfloatnullablee_F5.8? rms uncertainty on F5.8mJystat.errorfloatnullableF8.0? Spitzer/IRAC flux at 8.0ummJyphot.flux.density;em.IR.8-15umfloatnullablee_F8.0? rms uncertainty on F8.0mJystat.errorfloatnullableF24? Spitzer/MIPS flux at 24ummJyphot.flux.density;em.IR.15-30umfloatnullablee_F24? rms uncertainty on F24mJystat.errorfloatnullableF70? Spitzer/MIPS flux at 70ummJyphot.flux.density;em.IR.30-60umfloatnullablee_F70? rms uncertainty on F70mJystat.errorfloatnullableF160? Herschel/PACS flux at 160ummJyphot.flux.density;em.mm.1500-3000GHzfloatnullablee_F160? rms uncertainty on F160mJystat.errorfloatnullableqPAH[0.5/4.6]? PAH mass fraction%phys.mass;arith.ratiofloatnullableE_qPAH[0.1/4.4]? Error on qPAH (upper value)%stat.error;stat.maxfloatnullablee_qPAH[0.1/1.4]? Error on qPAH (lower value)%stat.errorfloatnullablegamma[0.1/30]? Fraction of dust {gamma} heated by radiation field with intensity greater than Umin%phys.mass;arith.ratiofloatnullableE_gamma? Error on gamma (upper value)%stat.error;stat.maxfloatnullablee_gamma? Error on gamma (lower value)%stat.errordoublenullableUmin? Minimum starlight intensitymagarith.factorfloatnullableE_Umin? Error on Umin (upper value)magstat.error;stat.maxfloatnullablee_Umin? Error on Umin (lower value)magstat.errorfloatnullablel_Ab(O)K[~] Limit flag on Ab(O)Kmeta.code.errorcharAb(O)KKK04 abundance 12+log(O/H) (2)phys.abundfloate_Ab(O)Krms uncertainty on Ab(O)Kstat.errorfloatl_Ab(O)P[~] Limit flag on Ab(O)Pmeta.code.errorcharAb(O)P? PT05 abundance 12+log(O/H) (2)phys.abundfloatnullablee_Ab(O)P? rms uncertainty on Ab(O)Pstat.errorfloatnullable