J/MNRAS/456/3509ivo://CDS.VizieR/J/MNRAS/456/3509doi:10.26093/cds/vizier.74563509CDSKim T.-S.Carswell R.F.Ranquist D.2024-08-15T20:17:34Z2016-11-25T09:14:05ZCDS support team

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

cds-question@unistra.frquasarsspectroscopyredshiftedWe present the Voigt profile analysis of 132 intervening CIV+CIII components associated with optically thin HI absorbers at 2.1<z<3.4 in the 19 high-quality UVES/VLT and HIRES/Keck QSO spectra. For logN_CIV_ in [11.7, 14.1], N_CIII_{propto}N_CIV_^1.42+/-0.11^ and <N_CIII}/N_CIV>=1.0+/-0.3 with a negligible redshift evolution. For 54 CIV components tied (aligned) with HI at logN_HI_ in [12.2, 16.0] and logN_CIV_ in [11.8, 13.8], the gas temperature T_b_ estimated from absorption line widths is well approximated to a Gaussian peaking at logT_b_~4.4+/-0.3 for logT_b_ in [3.5, 5.5], with a negligible non-thermal contribution. For 32 of 54 tied HI+CIV pairs, also tied with CIII at logN_CIII_ in [11.7, 13.8], we ran both photoionization equilibrium (PIE) and non-PIE (using a fixed temperature T_b_) cloudy models for the Haardt-Madau QSOs+galaxies 2012 UV background. We find evidence of bimodality in observed and derived physical properties. High-metallicity branch absorbers have a carbon abundance [C/H]temp>=-1.0, a line-of-sight length L_temp_<=20kpc and a total (neutral and ionized) hydrogen volume density logn_H,temp_ in [-4.5, -3.3] and logT_b_ in [3.9, 4.5]. Low-metallicity branch absorbers have [C/H]temp<=-1.0, L_temp_ in [20, 480]kpc and logn_H,temp_ in [-5.2, -4.3] and logT_b_~ 4.5. High-metallicity branch absorbers seem to be originated from extended discs, inner haloes or outflowing gas of intervening galaxies, while low-metallicity absorbers are produced by galactic haloes or the surrounding intergalactic medium filament.2016MNRAS.456.3509Khttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/456/3509CatalogResearchIsServedByTAP VizieR generic servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/456/3509https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/456/3509http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/456/3509https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/456/3509https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/456/3509http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/456/3509GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapOpticaldefaultJ/MNRAS/456/3509/table1Analysed QSOsInstIntrumentmeta.notecharQSOQSO namemeta.id;meta.maincharn_zem[d] Note on zem (1)meta.notecharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintzemRedshift measured from the observed Ly{alpha} emission linesrc.redshiftfloatzCIIIlLower value of CIII redshift interval (2)src.redshiftfloatzCIIIuUpper value of CIII redshift interval (2)src.redshiftfloatS/NLya? S/N per pixel in the central parts of the analysed Ly{alpha} foreststat.snrintnullableS/NCIV? S/N per pixel in the central parts of the analysed CIV regionstat.snrintnullableS/NCIII? S/N per pixel in the central parts of the analysed CIII regionstat.snrintnullableLine[*] * indicates line lists of individual CIII absorbers in table3.datmeta.codecharSimbadSimbad column added by the CDSmeta.ref.urlcharJ/MNRAS/456/3509/table2Line lists of individual CIII absorberse_b? rms uncertainty on bkm/sstat.errorfloatnullablerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintQSOQSO namemeta.id;meta.maincharIonIon (1)phys.atmol.ionStagecharDVRelative velocitykm/sphys.veloc;arith.difffloate_DVrms uncertainty on DVkm/sstat.errorfloatzabsAbsorption redshiftsrc.redshiftdoublee_zabsrms uncertainty on zabsstat.errordoublel_bLimit flag on bmeta.code.errorcharbLinewidth bkm/sspect.dopplerVelocfloatlogNlogarithmic column densitylog(cm**-2)phys.columnDensityfloate_logNrms uncertainty on logNlog(cm**-2)stat.errorfloat