J/ApJS/212/9ivo://CDS.VizieR/J/ApJS/212/9doi:10.26093/cds/vizier.22120009CDSTzanavaris P.Gallagher S.C.Hornschemeier A.E.Fedotov K.,Eracleous M.Brandt W.N.Desjardins T.D.Charlton J.C.Gronwall C.2021-08-10T11:50:20Z2014-07-03T06:32:23ZCDS support team

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

cds-question@unistra.fractive-galactic-nucleix-ray-sourcesWe present Chandra X-ray point source catalogs for 9 Hickson Compact Groups (HCGs, 37 galaxies) at distances of 34-89Mpc. We perform detailed X-ray point source detection and photometry and interpret the point source population by means of simulated hardness ratios. We thus estimate X-ray luminosities (L_X_) for all sources, most of which are too weak for reliable spectral fitting. For all sources, we provide catalogs with counts, count rates, power-law indices ({Gamma}), hardness ratios, and L_X_, in the full (0.5-8.0keV), soft (0.5-2.0keV), and hard (2.0-8.0keV) bands. We use optical emission-line ratios from the literature to re-classify 24 galaxies as star-forming, accreting onto a supermassive black hole (AGNs), transition objects, or low-ionization nuclear emission regions. Two-thirds of our galaxies have nuclear X-ray sources with Swift/UVOT counterparts. Two nuclei have L_X,0.5-8.0keV_>10^42^erg/s, are strong multi-wavelength active galactic nuclei (AGNs), and follow the known {alpha}_OX_-{nu}L_{nu}(nearUV)_ correlation for strong AGNs. Otherwise, most nuclei are X-ray faint, consistent with either a low-luminosity AGN or a nuclear X-ray binary population, and fall in the "non-AGN locus" in {alpha}_OX_-{nu}L_{nu}(nearUV)_ space, which also hosts other normal galaxies. Our results suggest that HCG X-ray nuclei in high specific star formation rate spiral galaxies are likely dominated by star formation, while those with low specific star formation rates in earlier types likely harbor a weak AGN. The AGN fraction in HCG galaxies with M_R_<=-20 and L_X,0.5-8.0keV_>=10^41^erg/s is 0.08_-0.01_^+0.35^, somewhat higher than the ~5% fraction in galaxy clusters.2014ApJS..212....9Thttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJS/212/9CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toB/chandra : The Chandra Archive Log (CXC, 1999-2014)VII/213 : Hickson's Compact groups of Galaxies (Hickson+ 1982-1994)J/A+A/565/A25 : Hickson compact groups Herschel observations (Bitsakis+, 2014)J/A+A/542/A16 : X-ray detection of radio-selected SF galaxies (Ranalli+, 2012)J/A+A/540/A96 : Molecular gas in HCGs (Martinez-Badenes+, 2012)J/AJ/143/144 : ULX candidates in nearby Arp galaxies (Smith+, 2012)J/ApJS/195/10 : The CDF-S survey: 4Ms source catalogs (Xue+, 2011)J/A+A/533/A142 : UV-to-IR fluxes of Hickson compact groups (Bitsakis+, 2011)J/ApJS/187/135 : SEDs of weak AGNs associated with LINERs (Eracleous+, 2010)J/ApJS/187/64 : The simultaneous optical-to-X-ray SED of AGNs (Grupe+, 2010)J/A+A/512/A34 : XMM-COSMOS Type 1 AGNs (Lusso+, 2010)J/AJ/130/387 : SDSS-ROSAT AGN data (Strateva+, 2005)J/AJ/130/55 : Modelled Lick indices for galaxies (Mendes+, 2005)J/ApJ/619/L95 : Star formation in Stephan's Quintet (Xu+, 2005)J/A+A/435/521 : Radio Sources in Low-Luminosity AGNs. IV (Nagar+, 2005)J/AJ/127/1811 : Catalog of SDSS compact groups of galaxies (Lee+, 2004)J/ApJS/150/19 : ChaMP. I. First X-ray source catalog (Kim+, 2004)J/ApJ/586/794 : Multiwavelength luminosities of galaxies (Bell, 2003)J/A+AS/137/495 : Halpha Catalogue of HCG Galaxies (Severgnini+, 1999)J/A+A/325/473 : HCG HI-deficiency (Huchtmeier 1997)J/A+AS/117/39 : Hickson Compact Groups of Galaxies I. (Allam+, 1996)J/ApJ/399/353 : Radial velocities in Hickson compact groups (Hickson+ 1992)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJS/212/9https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJS/212/9http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJS/212/9https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJS/212/9https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJS/212/9http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJS/212/9GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJS/212/9/table1 (Chandra observation log for this Hickson Compact Group (HCG) sample)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJS/212/9/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJS/212/9/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJS/212/9/table1?GETtext/xml+votable180.050000true9.84959860.87818110.005555555555555556Cone search capability for table J/ApJS/212/9/Xsources (X-ray point sources: counts and derived quantities (tables 2 and 3))https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJS/212/9/Xsources?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJS/212/9/Xsources?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJS/212/9/Xsources?GETtext/xml+votable180.050000true9.78840.87790.0055555555555555566/13511 17492 18071 19456 22825 22828 25769 27872 36621 40294 46987https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJS/212/9?format=asciiX-raydefaultJ/ApJS/212/9/table1Chandra observation log for this Hickson Compact Group (HCG) samplerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintHCG[7/92] HCG numbermeta.id;meta.mainintNxNumber of X-ray sources in this compact groupmeta.numberintnullableObsID? Chandra observation numbermeta.numberintnullableDateObservation start datetime.start;obsnullableDetDetector (ACIS -S or -I)meta.idcharTexp[12.7/169.2] Exposure timekstime.duration;obs.exposurefloatf_Texp[*] *=Total exposure time for the HCGmeta.codecharTypeObservation type (Guaranteed Observing Time or General Observer proposal)meta.notecharPIPrincipal Investigatorobs.observercharAutAuthor's name of reference (first publication using these data)meta.bib.authorcharnullableBibCodeBibcodemeta.bib.bibcodecharSimbadSimbad column added by the CDSmeta.ref.urlcharNEDNED column added by the CDSmeta.ref.urlchar_RAPositions from the Hickson Compact Group catalog (Cat. VII/213) (right ascension part)degpos.eq.ra;meta.main_DEPositions from the Hickson Compact Group catalog (Cat. VII/213) (declination part)degpos.eq.dec;meta.mainJ/ApJS/212/9/XsourcesX-ray point sources: counts and derived quantities (tables 2 and 3)recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintHCG[7/92] HCG catalog identifiermeta.id.parentintID[1/256] Source identifier in HCGmeta.id;meta.mainintf_ID[ A-GQ] Upper case letter(s) = galaxymeta.codecharn_ID[*] *: also a nuclear sourcemeta.notecharGamma[-1.1/4.2] Power law index {Gamma}meta.code;spect.indexfloatE_Gamma[0/5] Upper error in gammastat.error;stat.maxfloate_Gamma[0/2] Lower error in gammastat.errorfloatFF[-16/-10.5]? Log full 0.5-8keV band flux; in erg/s/cm^2 (1)log(mW.m**-2)arith.zpfloatnullablee_FF? Uncertainty in FFlog(mW.m**-2)stat.errorfloatnullableFS? Log soft 0.5-2keV band flux; erg/s/cm^2 (1)log(mW.m**-2)arith.zpfloatnullablee_FS? Uncertainty in fSlog(mW.m**-2)stat.errorfloatnullableFH? Log hard 2-8keV band flux; erg/s/cm^2 (1)log(mW.m**-2)arith.zpfloatnullablee_FH? Uncertainty if fHlog(mW.m**-2)stat.errorfloatnullableLF[37/43]? Log full 0.5-8keV band luminosity; in erg/s (1)log(1e-07W)phys.luminosity;em.X-rayfloatnullableLS? Log soft 0.5-2keV band luminosity; erg/s (1)log(1e-07W)phys.luminosity;em.X-rayfloatnullableLH? Log hard 2-8keV band luminosity; erg/s (1)log(1e-07W)phys.luminosity;em.X-rayfloatnullableF2keV[-35/-29]? Log flux density at 2keV; in erg/s/cm^2/Hz (=10^23^Jy) (1)log(mW.m**-2.Hz**-1)phot.flux.densityfloatnullablee_F2keV? Uncertainty in F2keVlog(mW.m**-2.Hz**-1)stat.errorfloatnullableEEF[0.4/0.9] Encircled Energy Fraction by AE (ACIS Extract) PSF at 1.5keVphys.size;arith.ratiofloatRAJ2000Right Ascension in decimal degrees (J2000)degpos.eq.ra;meta.mainDEJ2000Declination in decimal degrees (J2000)degpos.eq.dec;meta.maincF[0/23361] Full 0.5-8 keV band countsctphot.count;em.X-rayintE_cFUpper error in cFctstat.error;stat.maxinte_cFLower error in cFctstat.errorintf_cF? Full band detection code (G2)meta.codeintnullablecSSoft 0.5-2 keV band countsctphot.count;em.X-rayintE_cSUpper error in cSctstat.error;stat.maxinte_cSLower error in cSctstat.errorintf_cS? Soft band detection code (G2)meta.codeintnullablecHHard 2-8 keV band countsctphot.count;em.X-rayintE_cHUpper error in cHctstat.error;stat.maxinte_cHLower error in cHctstat.errorintf_cH? Hard band detection code (G2)meta.codeintnullableHR[-1/0.95] Hardness ratio (HR=(cH-cS)/(cH+cS))phot.flux;arith.ratiofloatnullableE_HR[0/1.1] Upper error in HRstat.error;stat.maxfloate_HR[0/1] Lower error in HRstat.errorfloatf_HR[-2/1]? Hardness ratio detection code (G1)meta.codeintnullableCRF[0/472] Full 0.5-8 keV band count ratect/ksphot.count;em.X-rayfloatE_CRFUpper error in CRFct/ksstat.error;stat.maxfloate_CRFLower error in CRFct/ksstat.errorfloatCRSSoft 0.5-2 keV band count ratect/ksphot.count;em.X-rayfloatE_CRSUpper error in CRSct/ksstat.error;stat.maxfloate_CRSLower error in CRSct/ksstat.errorfloatCRHHard 2-8 keV band count ratect/ksphot.count;em.X-rayfloatE_CRHUpper error in CRHct/ksstat.error;stat.maxfloate_CRHLower error in CRHct/ksstat.errorfloatAEsig[-2/200] AE detection significance (2)stat.fit.goodnessfloatAEP[0/1] AE no-source probability (2)stat.fit.goodnessfloat