J/ApJ/923/189ivo://CDS.VizieR/J/ApJ/923/189doi:10.26093/cds/vizier.19230189CDSMcCabe T.Borthakur S.Heckman T.Tumlinson J.Bordoloi R.Dave R.2023-10-09T11:12:15Z2023-07-24T12:36:00ZCDS support team

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

cds-question@unistra.frgalaxy-groupsquasarsspectroscopyultraviolet-astronomyredshiftedgalaxy-kinematicsline-intensitiesintergalactic-mediumWe present the results of the Cosmic Origins Spectrograph-Intragroup Medium (COS-IGrM) Survey that used the COS on the Hubble Space Telescope to observe a sample of 18 UV bright quasars, each probing the IGrM of a galaxy group. We detect Ly{alpha}, CII, NV, SiII, SiIII, and OVI in multiple sightlines. The highest ionization species detected in our data is OVI, which was detected in eight out of 18 quasar sightlines. The wide range of ionization states observed provide evidence that the IGrM is patchy and multiphase. We find that the OVI detections generally align with radiatively cooling gas between 105.8 and 106K. The lack of OVI detections in 10 of the 18 groups illustrates that OVI may not be the ideal tracer of the volume filling component of the IGrM. Instead, it either exists at trace levels in a hot IGrM or is generated in the boundary between the hotter IGrM and cooler gas.2021ApJ...923..189Mhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/923/189CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toB/hst : HST Archived Exposures Catalog (STScI, 2007)J/ApJS/155/351 : Absorption toward PG 1116+215 (Sembach+, 2004)J/ApJS/168/213 : Ionization states and cooling efficiencies (Gnat+, 2007)J/ApJS/176/59 : FUSE survey of OVI in the disk of the MW (Bowen+, 2008)J/ApJS/177/39 : Survey of low-redshift OVI absorbers (Tripp+, 2008)J/A+A/514/A102 : SDSS DR7 groups of galaxies (Tago+, 2010)J/MNRAS/411/2770 : Hot white dwarfs in GALEX-DR5 (Bianchi+, 2011)J/ApJ/791/128 : Galaxy data for spiral-rich group members (Stocke+, 2014)J/ApJ/815/91 : z<0.16 CIV absorbers from HST/COS QSOs sp. (Burchett+, 2015)J/ApJ/804/79 : HST/COS obs. of QSOs within 600kpc of M31 (Lehner+, 2015)J/A+A/590/A68 : AGN data and absorption-line measurements (Richter+, 2016)J/MNRAS/490/1451 : MUDF properties of gal. groups at 0.5<z<1.5 (Fossati+, 2019)J/ApJS/240/15 : HST/COS UV obs. of low-z SDSS galaxy groups (Stocke+, 2019)J/ApJ/892/102 : XMM X-ray data of Planck ESZ gal. clusters (Lovisari+, 2020)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/923/189https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/923/189http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/923/189https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/923/189https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/923/189http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/923/189GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/923/189/table1 (The Cosmic Origins Spectrograph-Intragroup Medium (COS-IGrM) sample)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/923/189/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/923/189/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/923/189/table1?GETtext/xml+votable180.050000true130.49314.10.0055555555555555566/4328 5759 5929 8812 9146 10269 10401 10604 10674 11096 11101 11781 27116 27548 27722 27834 28383 31635https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/923/189?format=asciiUVdefaultJ/ApJ/923/189/table1The Cosmic Origins Spectrograph-Intragroup Medium (COS-IGrM) samplerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSeq[1/18] Running sequence numbermeta.idintT10Display data from Tago+ 2010, J/A+A/514/A102 within 3"meta.ref.urlcharGroupGalaxy group namemeta.id;meta.maincharprimaryRAJ2000[130.49/244.43] Group right ascension (J2000)degpos.eq.ra;meta.mainDEJ2000[5.29/56.92] Group declination (J2000)degpos.eq.dec;meta.mainzGp[0.074/0.164] Group redshiftsrc.redshift;pos.heliocentricfloatRAQdeg[130.49/244.35] QSO right ascension (J2000)degpos.eq.raDEQdeg[5.35/56.97] QSO declination (J2000)degpos.eq.deczQSO[0.086/1.36] Redshift of the quasarsrc.redshift;pos.heliocentricfloatNgp[3/7] Number of galaxies in the group N_gp_meta.numberintsigT10[43/243] Velocity dispersion (Tago+ 2010, J/A+A/514/A102)km/sphys.veloc.dispersionfloatRvirT10[291/777] Virial radius (Tago+ 2010, J/A+A/514/A102)kpcphys.size.radiusintrho[95/926] QSO impact parameter {rho}_QSO_kpcsrc.impactParamintlogMhalo[12.85/13.61] Log of halo masslog(solMass)phys.massfloatRvir[396/709] Virial radiuskpcphys.size.radiusintsigGp[160/287] Group velocity dispersionkm/sphys.veloc.dispersionintRACdeg[130.5/244.4] Closest member galaxy to the QSO sightline right ascension (J2000)degpos.eq.raDECdeg[5.3/57] Closest member galaxy to the QSO sightline declination (J2000)degpos.eq.decsSetSubsetmeta.notecharFig2[1/12]? Figure 2 subset number; column added by CDSmeta.bib.figintnullableNlmNumber of line measurements (link to Table 2)meta.numberintnullableJ/ApJ/923/189/table2Absorption line measurements within {+/-}800km/s of Group CenterGroupGalaxy group namemeta.id;meta.maincharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintz[0.075/0.164] Redshift of groupsrc.redshift;pos.heliocentricfloatSpIonization speciesphys.atmol.ionStagecharWave[1025/1260] Ionization species rest wavelength; Angstrom0.1nmem.wl;phys.atmol.ionizationintf_Wave[abc] Flag on Wave (1)meta.codecharComp[1/5]? Component Number (2)meta.code.multipintnullableEW[-37/1603]? Equivalent Width; milli-Angstroms (3)1e-13mspect.line.eqWidthdoublenullablee_EW[3.8/57]? Uncertainty in equivalent width (4)1e-13mstat.error;spect.line.eqWidthfloatnullableVel[-753/881]? Observed velocity (5)km/sphys.velocdoublenullablee_Vel[0.9/94]? Uncertainty in observed velocity (5)km/sstat.errorfloatnullablelogN[11.8/18.4]? Log10 column density (3)cm**-2phys.columnDensityfloatnullablee_logN[0.02/1]? Uncertainty in log10 column density (4)cm**-2stat.errorfloatnullableb[4.3/146]? Doppler b parameter (5)km/sspect.dopplerParamfloatnullableE_b[1.4/130]? Upper uncertainty in b (5)km/sstat.error;stat.maxfloatnullablee_b[1.4/61]? Lower uncertainty in b (5)km/sstat.errorfloatnullable