J/ApJ/900/9ivo://CDS.VizieR/J/ApJ/900/9doi:10.26093/cds/vizier.19000009CDSLehner N.Berek S.C.Howk J.C.Wakker B.P.Tumlinson J.Jenkins E.B.,Prochaska J.X.Augustin R.Ji S.Faucher-Giguere C.-A.Hafen Z.,Peeples M.S.Barger K.A.Berg M.A.Bordoloi R.Brown T.M.Fox A.J.,Gilbert K.M.Guhathakurta P.Kalirai J.S.Lockman F.J.O'Meara J.M.,Pisano D.J.Ribaudo J.Werk J.K.2022-03-14T07:38:05Z2021-11-12T06:59:15ZCDS support team

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

cds-question@unistra.frquasarsgalaxiesinterstellar-mediumspectroscopyultraviolet-astronomyinfrared-astronomyredshiftedchemical-abundancesProject AMIGA (Absorption Maps In the Gas of Andromeda) is a survey of the circumgalactic medium (CGM) of Andromeda (M31, R_vir_~300kpc) along 43 QSO sightlines at impact parameters 25<~R<~569kpc (25 at R<~R_vir_). We use ultraviolet absorption measurements of SiII, SiIII, SiIV, CII, and CIV from the Hubble Space Telescope/Cosmic Origins Spectrograph and OVI from the Far Ultraviolet Spectroscopic Explorer to provide an unparalleled look at how the physical conditions and metals are distributed in the CGM of M31. We find that SiIII and OVI have a covering factor near unity for R<~1.2R_vir_ and <~1.9R_vir_, respectively, demonstrating that M31 has a very extended ~104-105.5K ionized CGM. The metal and baryon masses of the 104-105.5K CGM gas within R_vir_ are >~108 and >~4x1010 (Z/0.3Z{sun})-1M{sun}, respectively. There is not much azimuthal variation in the column densities or kinematics, but there is with R. The CGM gas at R<~0.5R_vir_ is more dynamic and has more complicated, multiphase structures than at larger radii, perhaps a result of more direct impact of galactic feedback in the inner regions of the CGM. Several absorbers are projected spatially and kinematically close to M31 dwarf satellites, but we show that those are unlikely to give rise to the observed absorption. Cosmological zoom simulations of ~L* galaxies have OVI extending well beyond R_vir_ as observed for M31 but do not reproduce well the radial column density profiles of the lower ions. However, some similar trends are also observed, such as the lower ions showing a larger dispersion in column density and stronger dependence on R than higher ions. Based on our findings, it is likely that the Milky Way has a ~104-105.5K CGM as extended as for M31 and their CGM (especially the warm-hot gas probed by OVI) are overlapping.2020ApJ...900....9Lhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/900/9CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toVIII/76 : Leiden/Argentine/Bonn (LAB) Survey of Galactic HI (Kalberla+, 2005)J/ApJS/136/463 : Distances and metallicities of HVCs and IVCs (Wakker, 2001)J/ApJS/146/1 : O VI absorption in FUSE survey (Wakker+, 2003)J/AJ/127/2738 : ACS VI photometry of M31 halo RR Lyrea (Brown+, 2004)J/ApJS/163/282 : Molecular hydrogen column densities (Wakker+, 2006)J/ApJS/168/213 : Ionization states and cooling efficiencies (Gnat+, 2007)J/ApJS/177/39 : Survey of low-redshift OVI absorbers (Tripp+, 2008)J/ApJ/700/1299 : Gas-phase element depletions in the ISM (Jenkins, 2009)J/ApJ/703/614 : UV star-forming regions in M31 (Kang+, 2009)J/ApJS/187/388 : A XMM-Newton survey of the SXRB (Henley+, 2010)J/ApJ/727/46 : Highly ionized plasmas in the Milky Way (Lehner+, 2011)J/AJ/144/4 : Prop. of dwarf galaxies in Local Group (McConnachie+, 2012)J/ApJ/745/156 : M31 Cepheids with HST/WFC3 (Riess+, 2012)J/ApJ/768/172 : Kinematic analysis of red giant in M31 dSphs (Collins+, 2013)J/ApJ/770/138 : Metallicities of Lyman limit systems and DLA (Lehner+, 2013)J/ApJ/788/119 : Properties of the highly ionized gas of quasars (Lehner+,2014)J/MNRAS/445/2061 : Absorption in multiphase circumgalactic medium (Liang+,2014)J/MNRAS/449/3263 : Extended galaxy halo gas through HI and OVI (Johnson+, 2015)J/ApJ/804/79 : HST/COS obs. of QSOs within 600kpc of M31 (Lehner+, 2015)J/ApJ/814/40 : Nearby galaxy filaments with UV obs. (Wakker+, 2015)J/ApJ/833/167 : PAndAS view of Andromeda satellites. II. (Martin+, 2016)J/AJ/154/41 : Rotational velocities of M33 (Kam+, 2017)J/ApJS/230/6 : HST-COS & -STIS absorption-line spectroscopy II (Keeney+,2017)J/A+A/607/A48 : AGN data and absorption-line measurements (Richter+, 2017)J/ApJ/846/145 : PHAT. XIX. Formation history of M31 disk (Williams+, 2017)J/ApJ/866/33 : The COS CGM compendium. I. Initial results (Lehner+, 2018)J/ApJ/887/5 : COS CGM compendium. III. z<=1Ly{alpha} syst. (Lehner+, 2019)J/ApJ/872/81 : The COS CGM Compendium. II. Lyman limit syst. (Wotta+, 2019)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/900/9https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/900/9http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/900/9https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/900/9https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/900/9http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/900/9GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/900/9/table1 (summary)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/900/9/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/900/9/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/900/9/table1?GETtext/xml+votable180.050000true12.07939.6870.005555555555555556Cone search capability for table J/ApJ/900/9/table3 (Summary of the M31 dwarf galaxies)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/900/9/table3?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/900/9/table3?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/900/9/table3?GETtext/xml+votable180.050000true10.674270840.86516940.0055555555555555566/134 552 907 2110 2161 2221 2245 2272 2287 2297 2414 2444 2565 2572 2584 2604 2610-2611 2621-2622 2628 2663 2668 2676 2709 2733 2754-2755 2758 2764 2767 2774 2777 2789 2830 2852 2953 3042 13414 13655 13720 14149 17819 17898 18098 18125 18302 18387 18409 18769 19283 19433 19567 19700 19730 19746 19767 19833 19841 19883 19909 19932 20008 20079 20099 20262 20269 20290 20315 20416 20428 20437 20440https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/900/9?format=asciiUVInfrareddefaultJ/ApJ/900/9/table1summaryX[-462.4/397.6] Cartesian X projected distance (2)kpcpos.cartesian.xfloatrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintQSOQSO namemeta.id;meta.maincharprimaryz[0.01/0.86] QSO redshiftsrc.redshiftfloatRAJ2000[0.24/358] Right Ascension (J2000)degpos.eq.ra;meta.mainDEJ2000[-1.16/46] Declination (J2000)degpos.eq.dec;meta.mainLON[-131.7/-76.9] Longitude, Magellanic Stream (1)degpos.framefloatLAT[-13.9/46.7] Latitude, Magellanic Stream (1)degpos.framefloatRad[25/568.7] Radial projected distance (2)kpcpos.distancefloatY[-534/57.9] Cartesian Y projected distance (2)kpcpos.cartesian.yfloatPID[11524/14268] HST Program identifier (3)meta.id;meta.datasetintCOSCOS Grating usedmeta.id;instrcharS/N[3.4/32.7] Signal-to-noise ratio (4)stat.snrfloatSimbadNameSimbad column added by the CDSmeta.idcharnullableJ/ApJ/900/9/table2Summary of the resultsb_Vel[-535/-190] lower velocity bound (1)km/sphys.veloc;stat.minfloatrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintQSOQSO namemeta.id;meta.maincharIonAtomic/Ionic Speciesphys.atmol.ionStagecharB_Vel[-485/-120] upper velocity bound (1)km/sphys.veloc;stat.maxfloatVel[-507.6/-152.6]? average velocitykm/sphys.veloc;stat.meanfloatnullablee_Vel[0.4/177]? Uncertainty in Velkm/sstat.errorfloatnullablelogN[11.53/15.58] log, column densitylog(cm**-2)phys.columnDensityfloatE_logN[0.01/0.19] Upper uncertainty in logNlog(cm**-2)stat.error;stat.maxfloate_logN[0.01/0.34] Lower uncertainty in logNlog(cm**-2)stat.errorfloatf_logN[-2/0] Line detection flag (2)meta.codeintMS[-1/0] Magellanic Stream contamination flag (3)meta.codeintJ/ApJ/900/9/table3Summary of the M31 dwarf galaxiesTypeDwarf Galaxy typesrc.classcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameDwarf Galaxy namemeta.id;meta.maincharLON[-147/-105] Longitude, Magellanic Stream (1)degpos.framefloatLAT[4.6/49.4] Latitude, Magellanic Stream (1)degpos.framefloatVel[-535/-101] Velocity relative to the local standard of restkm/sspect.dopplerVelocfloatDist[600/933] Absolute distance to dwarf galaxykpcpos.distancefloatRad[5.3/337.5] Radial projected distance (2)kpcpos.distancefloatX[-252.4/331.3] Cartesian X projected distance (2)kpcpos.cartesian.xfloatY[-251.4/237.1] Cartesian Y projected distance (2)kpcpos.cartesian.yfloatMass[0.3/3300.0] Total stellar mass (3)100000solMassphys.massfloatM200[9.8/864.8] Virial mass (3)1e+08solMassphys.massfloatR200[20.9/93.2] Virial radius (3)kpcphys.size.radiusfloatv200[20.0/89.3] Circular velocity (3)km/sphys.veloc.rotatfloatSimbadSimbad column added by the CDSmeta.ref.urlchar_RAPosition from SIMBAD (right ascension part)degpos.eq.ra;meta.mainnullable_DEPosition from SIMBAD (declination part)degpos.eq.dec;meta.mainnullableJ/ApJ/900/9/table4QSO absorbers within R200 of M31 dwarf galaxiesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameDwarf Galaxy name (1)meta.id;meta.maincharQSOQSO name (1)meta.id.assoccharvLSR[-639/-459] velocity, LSR, from SiIII absorption at M~31km/sphys.veloc;pos.lsrfloatdSep[0.17/0.99] projected separationkpcpos.angDistancefloatvesc[28.5/187.3] escape velocity (2)km/sphys.veloc.escapefloatdv[1.2/367.3] velocity separation (3)km/sspect.resolutionfloatJ/ApJ/900/9/tablea1Line list identificationrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintQSOQSO namemeta.id;meta.maincharlambda[905/2853] Observed wavelength0.1nmem.wlfloatTypeAbsorption type (1)src.classcharIonAtomic/Ionic Speciesphys.atmol.ionStagecharRest[763/2853]? Wavelength of Ion in Frame0.1nmem.wl;arith.difffloatnullableFrameReference frame (2)pos.framecharVelVelocitykm/sspect.dopplerVeloccharz[-1/0.83] Redshiftsrc.redshiftdoubleEW[-3715/8206] Equivalent Width1e-13mspect.line.eqWidthfloate_EW[0.1/306]? Uncertainty in EWl (3)1e-13mstat.error;spect.line.eqWidthfloatnullableJ/ApJ/900/9/tabled1Summary of the profile fit resultsIonAtomic/Ionic Speciesphys.atmol.ionStagecharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintQSOQSO namemeta.id;meta.maincharComp[1/6] Component numbermeta.idintVel[-471.4/57.2] velocity componentkm/sspect.dopplerVelocfloate_Vel[0.5/36.2] Uncertainty (1{sigma}) in vkm/sstat.errorfloatb[1.6/99] Doppler parameterkm/sspect.dopplerParamfloate_b[0.8/999] Uncertainty (1{sigma}) in bkm/sstat.errorfloatlogN[12.29/14.7] log, column densitylog(cm**-2)phys.columnDensityfloate_logN[0.01/24.7] Uncertainty (1{sigma}) in logNlog(cm**-2)stat.errorfloat