J/ApJ/899/159ivo://CDS.VizieR/J/ApJ/899/159doi:10.26093/cds/vizier.18990159CDSFrisbie R.L.S.Donahue M.Voit G.M.Connor T.Li Y.Sun M.,Lakhchaura K.Werner N.Grossova R.2022-03-11T14:27:52Z2021-11-08T07:33:47ZCDS support team

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

cds-question@unistra.frgalaxiesradio-sourcesWe present an archival analysis of Chandra X-ray observations for 12 nearby early-type galaxies hosting radio sources with radio power >1023W/Hz at 1.4GHz, similar to the radio power of the radio source in NGC4261. Previously, in a similar analysis of eight nearby X-ray and optically bright elliptical galaxies, Werner et al. found that NGC4261 exhibited unusually low central gas entropy compared to the full sample. In the central 0.3kpc of NGC4261, the ratio of cooling time to freefall time (tcool/tff) is less than 10, indicating that cold clouds may be precipitating out of the hot ambient medium and providing fuel for accretion in the central region. NGC4261 also hosts the most powerful radio source in the original sample. Because NGC4261 may represent an important phase during which powerful feedback from a central active galactic nucleus (AGN) is fueled by multiphase condensation in the central kiloparsec, we searched the Chandra archive for analogs to NGC4261. We present entropy profiles of those galaxies, as well as profiles of tcool/tff. We find that one of them, IC4296, exhibits properties similar to NGC4261, including the presence of only single-phase gas outside of r~2kpc and a similar central velocity dispersion. We compare the properties of NGC4261 and IC4296 to hydrodynamic simulations of AGN feedback fueled by precipitation. Over the course of those simulations, the single-phase galaxy has an entropy gradient that remains similar to the entropy profiles inferred from our observations.2020ApJ...899..159Fhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/899/159CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toVIII/65 : 1.4GHz NRAO VLA Sky Survey (NVSS) (Condon+ 1998)VIII/76 : Leiden/Argentine/Bonn (LAB) Survey of Galactic HI (Kalberla+, 2005)J/ApJ/704/1586 : BCGs with radio AGN (Sun, 2009)J/ApJ/731/L41 : 1.4GHz obs. of bright early-type galaxies (Brown+, 2011)J/ApJ/794/48 : XMM-Newton galaxy clusters X-ray properties (Connor+, 2014)J/A+A/594/A116 : HI4PI spectra and column density maps (HI4PI team+, 2016)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/899/159https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/899/159http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/899/159https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/899/159https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/899/159http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/899/159GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/899/159/table2 (Radial profile properties for each galaxy with sufficient counts for temperature deprojection.)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/899/159/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/899/159/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/899/159/table2?GETtext/xml+votable180.050000true14.453680630.35244780.0055555555555555566/2214 18241 18935 25055 27714 27773 34493 43503 43828 46568https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/899/159?format=asciiRadiodefaultJ/ApJ/899/159/table2Radial profile properties for each galaxy with sufficient counts for temperature deprojection.NameGalaxy Namemeta.id;meta.maincharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRad[0.14/75.74] Radial bin centerkpcphys.size.radiusfloatRbin[0.06/5.22] Half-width of the radial binkpcphys.size.radiusfloatkTbin[1/9] Temperature bin group numberphys.temperature;pos.lgintkT[0.31/10.89] Best fit temperaturekeVphys.temperaturefloate_kT[0.01/4.5] Uncertainty in kTkeVstat.error;phys.energyfloatnebin[1/25] Electron density bin numberphys.densityintne[0.02/29.5] Best fit density0.01cm**-3phys.densityfloate_ne[0/1.14] Uncertainty in ne0.01cm**-3stat.errorfloatK[1.62/525] Calculated entropykeV.cm**2phys.atmolfloate_K[0.04/228] Uncertainty in KkeV.cm**2stat.errorfloatSimbadSimbad column added by the CDSmeta.ref.urlchar_RAPosition from SIMBAD (right ascension part)degpos.eq.ra;meta.main_DEPosition from SIMBAD (declination part)degpos.eq.dec;meta.main