J/ApJ/939/22ivo://CDS.VizieR/J/ApJ/939/22doi:10.26093/cds/vizier.19390022CDSZhang L.Ho L.C.Li A.2025-02-12T20:09:27Z2024-10-25T08:58:06ZCDS support team

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

cds-question@unistra.frgalaxiesinfrared-astronomyspectroscopyinterstellar-mediumultraviolet-photometryactive-galactic-nucleistar-forming-regionsWe combined mapping-mode mid-infrared Spitzer spectra with complementary infrared imaging to perform a spatially resolved study of polycyclic aromatic hydrocarbon (PAH) emission from the central regions of 66 nearby galaxies, roughly evenly divided into star-forming systems and low-luminosity active galactic nuclei (AGNs). In conjunction with similar measurements available for quasars, we aim to understand the physical properties of PAHs across a broad range of black hole accretion power, with the goal of identifying observational diagnostics that can be used to probe the effect of AGNs on the host galaxy. Whereas the PAH emission correlates tightly with far-ultraviolet luminosity in star-forming regions, the spatially resolved regions of AGNs tend to be PAH deficient. Moreover, AGN regions exhibit on average smaller PAH 6.2{mu}m/7.7{mu}m and larger PAH 11.3{mu}m/7.7{mu}m band ratios. Although the current data are highly restrictive, they suggest that these anomalous PAH band ratios cannot be explained by the effects of the AGN radiation field alone. Instead, they hint that small grains may be destroyed by the combined effects of radiative processes and shocks, which are plausibly linked to jets and outflows preferentially associated with highly sub-Eddington, radiatively inefficient AGNs. While quasars also present a PAH deficit and unusual PAH band ratios, their characteristics differ in detail compared to those observed in more weakly accreting AGNs, a possible indicator of fundamental differences in their modes of energy feedback.2022ApJ...939...22Zhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/939/22CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toVII/233 : 2MASS All-Sky Extended Source Catalog (XSC) (IPAC/UMass, 2003-2006)II/311 : WISE All-Sky Data Release (Cutri+ 2012)II/335 : Revised cat. of GALEX UV sources (GUVcat_AIS GR6+7) (Bianchi+ 2017)J/ApJS/112/315 : Spectroscopic parameters of Seyfert nuclei (Ho+ 1997)J/ApJ/633/871 : Positions & photometry of HII knots in M51 (Calzetti+, 2005)J/ApJ/646/161 : Classification of IR galaxies (Dale+, 2006)J/PASP/119/994 : MIPS 24um calibrators (Engelbracht+, 2007)J/ApJS/173/185 : GALEX UV atlas of nearby galaxies (Gil de Paz+, 2007)J/ApJ/669/959 : Warm molecular hydrogen in SINGS galaxies (Roussel+, 2007)J/ApJ/658/815 : Radio loudness of active galactic nuclei (Sikora+, 2007)J/ApJ/656/770 : Mid-IR spectrum of star-forming galaxies (Smith+, 2007)J/ApJ/693/1821 : The Spitzer infrared nearby galaxies survey (Dale+, 2009)J/ApJS/183/1 : Catalog of central stellar velocity dispersions (Ho+, 2009)J/ApJ/705/885 : PAH in galaxies at z~0.1 (O'Dowd+, 2009)J/ApJS/190/233 : Spectroscopy and abund. of SINGS galaxies (Moustakas+, 2010)J/ApJ/719/1191 : Mid-IR indicators of SF and AGN in galaxies (Treyer+, 2010)J/A+A/566/A115 : XMM sources in NGC1512/1510 (Ducci+, 2014)J/ApJ/790/124 : Dust and gas physics of the GOALS sample (Stierwalt+, 2014)J/MNRAS/470/3071 : PAH features of AGN (Jensen+, 2017)J/ApJ/854/158 : z<0.5 PG quasars IR energy distributions (Shangguan+, 2018)J/MNRAS/489/855 : Extended narrow line regions in MaNGA AGN (Chen+, 2019)J/ApJS/243/3 : Chandra observations of SINGS galaxies (Lehmer+, 2019)J/ApJ/884/136 : PAH features of star-forming gal. using Spitzer (Xie+, 2019)J/ApJ/898/83 : BH masses & bulge+disk UV-3.6um colors (Dullo+, 2020)J/ApJ/910/124 : Star formation rates of low-z QSOs from 1-500um (Xie+, 2021)J/ApJ/925/218 : Nature of PAH in PG QSOs from Spitzer/IRS sp. (Xie+, 2022)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/939/22https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/939/22http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/939/22https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/939/22https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/939/22http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/939/22GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/939/22/galaxies (Properties of the galaxy (Table 1) and mid-IR diagnostic line ratios (Table 5))https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/939/22/galaxies?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/939/22/galaxies?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/939/22/galaxies?GETtext/xml+votable180.050000true128.5366.181670.0055555555555555566/764 2320 4447 5181 5492 5715 5751 5799 6042 7241 7602 7606 7743 7769 10475 10761 10841 10856 10901 11027 11263 11457 11933 11961 13522 15592 16441 16595 17594 17612 18398 23178 25083 25946 26271 27030 27514 27555 27830 27861 27914 27936-27937 28015 28035 28039 28123 28167 28496 33958 33986 34404 34471 34493 34534 35993 36194 36241 36974 38390 43420 43845 45732 463996.772611666688002e-21 1.4134638842407062e-18https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/939/22?format=asciiUVInfrareddefaultJ/ApJ/939/22/galaxiesProperties of the galaxy (Table 1) and mid-IR diagnostic line ratios (Table 5)recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintGalGalaxy namemeta.id;meta.maincharprimaryNrNumber of spactially resolved measurement for this galaxy (link to Tables 3+4)meta.numberintnullableHTypeHubble type from NEDsrc.morph.typecharClassNuclear classification (1)meta.code.class;src.classcharDL[3.5/30.6] Luminosity distance (2)Mpcpos.distancefloatE(B-V)[0.007/0.3] Schlafly & Finkbeiner (2011ApJ...737..103S) Galactic reddeningmagphot.color.excessfloatlogLb[38.72/43.55]? log bolometric luminosity (3)log(1e-07W)phys.luminosity;phot.flux.bolfloatnullablef_logLbFlag on logLb (4)meta.code;phys.luminosity;phot.flux.bolcharlogMBH[6.23/8.74]? log black hole mass (5)log(solMass)phys.massfloatnullablef_logMBHFlag on logMBH (4)meta.code;phys.masscharlogNe-T[-1.3/0.7] Log total [NeIII]/[NeII] ratio (1)spect.line.intensity;arith.ratiofloatNEDNED column added by the CDSmeta.ref.urlcharLEDAmeta.ref.urlcharlogNe-I[-1.16/0.9]? Log inner [NeIII]/[NeII] ratio (2)spect.line.intensity;arith.ratiofloatnullablelogNe-O[-1.13/0.6]? Log outer [NeIII]/[NeII] ratio (3)spect.line.intensity;arith.ratiofloatnullablelogS/Ne-T[-1.32/0.31] Log total [SIV]/[NeIII] ratio (1)spect.line.intensity;arith.ratiofloatlogS/Ne-I[-1.3/-0.02]? Log inner [SIV]/[NeIII] ratio (2)spect.line.intensity;arith.ratiofloatnullablelogS/Ne-O[-1.25/0.02]? Log outer [SIV]/[NeIII] ratio (3)spect.line.intensity;arith.ratiofloatnullablelogS-T[-0.6/0.32] Log total [SIII]18.7/[SIII]33.5 ratio (1)spect.line.intensity;arith.ratiofloatlogS-I[-0.41/0.3]? Log inner [SIII]18.7/[SIII]33.5 ratio (2)spect.line.intensity;arith.ratiofloatnullablelogS-O[-0.8/0.41]? Log outer [SIII]18.7/[SIII]33.5 ratio (3)spect.line.intensity;arith.ratiofloatnullablelogH2S-T[-0.15/1]? Log total H_2_S(2)/H_2_S(0) ratio (1)spect.line.intensity;arith.ratiofloatnullablelogH2S-I[-0.23/1.1]? Log inner H_2_S(2)/H_2_S(0) ratio (2)spect.line.intensity;arith.ratiofloatnullablelogH2S-O[-0.14/1]? Log outer H_2_S(2)/H_2_S(0) ratio (3)spect.line.intensity;arith.ratiofloatnullablelogH2S/PAH-T[-2.24/-0.5]? Log total H_2_S(0,1,2)/PAH7.7 ratio (1)spect.line.intensity;arith.ratiofloatnullablelogH2S/PAH-I[-2.4/-0.19]? Log inner H_2_S(0,1,2)/PAH7.7 ratio (2)spect.line.intensity;arith.ratiofloatnullablelogH2S/PAH-O[-2.9/-0.8]? Log outer H_2_S(0,1,2)/PAH7.7 ratio (3)spect.line.intensity;arith.ratiofloatnullableGALEXDisplay data from Gil de Paz+ 2007, J/ApJS/173/185spect.line.intensity;arith.ratiochar_RARight Ascension (J2000) from SIMBAD (not part of the original data)degpos.eq.ra;meta.main_DEDeclination (J2000) from SIMBAD (not part of the original data)degpos.eq.dec;meta.mainSimbadNameSimbad column added by the CDSmeta.idcharnullableJ/ApJ/939/22/regionsSpatially resolved multi-band photometry (Table 3) and measurements of PAH emission (Table 4)GalGalaxy namemeta.id;meta.maincharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRegResolved spaxel region identifier within Galmeta.id.part;meta.mainintlogfFUV[-3.2/1.2]? Log GALEX FUV band flux densitylog(mJy)phot.flux.density;em.UV.100-200nmfloatnullablee_logfFUV[0.01/2.7]? Uncertainty in logfFUVlog(mJy)stat.error;phot.flux.density;em.UV.100-200nmfloatnullablelogfJ[0.03/2.7] Log 2MASS J band flux densitylog(mJy)phot.flux.density;em.IR.Jfloate_logfJ[0.01/1.4] Uncertainty in logfJlog(mJy)stat.error;phot.flux.density;em.IR.JfloatlogfH