J/ApJ/811/78ivo://CDS.VizieR/J/ApJ/811/78doi:10.26093/cds/vizier.18110078CDSTchernyshyov K.Meixner M.Seale J.Fox A.Friedman S.D.Dwek E.,Galliano F.2017-06-27T06:37:28Z2016-01-20T12:40:32ZCDS support team

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

cds-question@unistra.frmagellanic-cloudsspectroscopyultraviolet-astronomygiant-starsWe present a study of the composition of gas and dust in the Large and Small Magellanic Clouds (LMC and SMC) using UV absorption spectroscopy. We measure PII and FeII along 84 spatially distributed sightlines toward the MCs using archival Far Ultraviolet Spectroscopic Explorer observations. For 16 of those sightlines, we also measure SiII, CrII, and ZnII from new Hubble Space Telescope Cosmic Origins Spectrograph observations. We analyze these spectra using a new spectral line analysis technique based on a semi-parametric Voigt profile model. We have combined these measurements with HI and H_2_ column densities and reference stellar abundances from the literature to derive gas-phase abundances, depletions, and gas-to-dust ratios (GDRs). Of our 84 P and 16 Zn measurements, 80 and 13, respectively, are depleted by more than 0.1dex, suggesting that P and Zn abundances are not accurate metallicity indicators at and above the metallicity of the SMC. Si, Cr, and Fe are systematically less depleted in the SMC than in the Milky Way (MW) or LMC. The minimum Si depletion in the SMC is consistent with zero. We find GDR ranges of 190-565 in the LMC and 480-2100 in the SMC, which is broadly consistent with GDRs from the literature. These ranges represent actual location to location variation and are evidence of dust destruction and/or growth in the diffuse neutral phase of the interstellar medium. Where they overlap in metallicity, the gas-phase abundances of the MW, LMC, and SMC and damped Ly{alpha} systems evolve similarly with metallicity.2015ApJ...811...78Thttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/811/78CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/AJ/146/62 : HERschel HERITAGE in Magellanic Clouds (Meixner+, 2013)J/ApJ/755/89 : Metallicities of damped Ly{alpha} systems (Rafelski+, 2012)J/ApJ/745/173 : UV absorption sight lines of LMC and SMC (Welty+, 2012)J/A+A/530/A33 : DLA depletion estimations (Vladilo+, 2011)J/MNRAS/404/1321 : TiII in Milky way and Magellanic clouds (Welty+, 2010)J/ApJ/702/940 : Radio and UV spectra of HVC toward the MC (Lehner+, 2009)J/ApJ/700/1299 : Gas-phase element depletions in the ISM (Jenkins, 2009)J/PASP/121/634 : FUSE observations in Magellanic Clouds (Blair+, 2009)J/AJ/136/1039 : CaII index of SMC red giant branch stars (Carrera+, 2008)J/A+A/466/277 : VLT-FLAMES survey of massive stars (Hunter+, 2007)J/AJ/132/2268 : SAGE calibration stars (Meixner+, 2006)J/A+A/445/93 : Abundances of DLAs (Dessauges-Zavadsky+, 2006)J/A+A/324/435 : Chemical composition of 6 K supergiants in the SMC (Hill 1997)J/A+A/293/347 : LMC F supergiants (Hill+, 1995)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/811/78https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/811/78http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/811/78https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/811/78https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/811/78http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/811/78GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/811/78/cos (Column densities toward LMC and SMC targets in the COS sample)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/811/78/cos?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/811/78/cos?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/811/78/cos?GETtext/xml+votable180.050000true11.636-73.10160.005555555555555556Cone search capability for table J/ApJ/811/78/fuse (Column densities and depletions toward LMC and SMC targets in the FUSE sample)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/811/78/fuse?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/811/78/fuse?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/811/78/fuse?GETtext/xml+votable180.050000true11.3258458-73.25654170.0055555555555555566/33047 33053 33076 33091 33092 33094 33095 33097 33099 33100 33101 33102 33107 33112 33116 33120 33122 33126 33127 33294 33295 33298 33304 33306 33307 33316 33317 333283.322582951404819e-19 3.852589004194616e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/811/78?format=asciiUVdefaultJ/ApJ/811/78/cosColumn densities toward LMC and SMC targets in the COS samplerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintTargetTarget namemeta.id;meta.maincharGalGalaxy identifier ("SMC" or "LMC")meta.idcharRAJ2000Right ascension in decimal degrees (J2000) (1)degpos.eq.ra;meta.mainDEJ2000Declination in decimal degrees (J2000) (1)degpos.eq.dec;meta.mainSpTMK spectral type (1)src.spTypecharVmag[11.3/13.8] V-band magnitude (1)magphot.mag;em.opt.VfloatE(B-V)[0.1/0.4] E(B-V) (total) (1)phys.absorptionfloatlogNHI[20.5/22] Log HI column density (1)phys.columnDensityfloatlogNH2[14.7/21] Log H_2_ column density (1)phys.columnDensityfloatlogNPII[12.3/14.1] Log P II column densitylog(cm**-2)phys.columnDensityfloate_logNPII[0.01/1.4] logNPII uncertaintylog(cm**-2)stat.errorfloatlogNZnII[12.5/13.4] Log Zn II column densitylog(cm**-2)phys.columnDensityfloate_logNZnII[0.02/0.4] logNZnII uncertaintylog(cm**-2)stat.errorfloatlogNSiII[15.1/16.1] Log Si II column densitylog(cm**-2)phys.columnDensityfloate_logNSiII[0.01/0.2] logNSiII uncertaintylog(cm**-2)stat.errorfloatlogNCrII[11.4/13.8] Log Cr II column densitylog(cm**-2)phys.columnDensityfloate_logNCrII[0.02/1.1] logNCrII uncertaintylog(cm**-2)stat.errorfloatlogNFeII[13.9/15.5] Log Fe II column densitylog(cm**-2)phys.columnDensityfloate_logNFeII[0.01/2.1] logNFeII uncertaintylog(cm**-2)stat.errorfloatlogN(H)[20.5/22] Log hydrogen column densitylog(cm**-2)phys.columnDensityfloatMCatDisplay data within 2" from Blair+, 2009, J/PASP/121/634 and Welty+, 2012, J/ApJ/745/173meta.ref.urlintnullableSimbadSimbad column added by the CDSmeta.ref.urlcharJ/ApJ/811/78/fuseColumn densities and depletions toward LMC and SMC targets in the FUSE sampleTargetTarget identifiermeta.id;meta.maincharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintlogN(PII)[12.6/14.8] Log P II column densitylog(cm**-2)phys.columnDensityfloatnullablee_logN(PII)[0.01/0.5] Uncertainty in logN(PII)log(cm**-2)stat.errorfloatnullablelogN(FeII)[14/15.8] Log Fe II column densitylog(cm**-2)phys.columnDensityfloatnullablee_logN(FeII)[0/0.5] Uncertainty in logN(FeII)log(cm**-2)stat.errorfloatnullablelogN(H)[20.4/22] Log hydrogen column density (1)log(cm**-2)phys.columnDensityfloatnullableGalGalaxy identifier ("SMC" or "LMC")meta.idchardelP[-2.3/0.6] Phosphorus depletion (1)phys.abundfloate_delP[0.07/1.5] Uncertainty in delPstat.errorfloatdelZn[-0.9/-0.03]? Zinc depletion (1)phys.abundfloatnullablee_delZn[0.1/0.4]? Uncertainty in delZnstat.errorfloatnullabledelSi[-1.3/0.01]? Silicon depletion (1)phys.abundfloatnullablee_delSi[0.06/0.2]? Uncertainty in delSistat.errorfloatnullabledelCr[-3/-0.3]? Chromium depletion (1)phys.abundfloatnullablee_delCr[0.07/1.1]? Uncertainty in delCrstat.errorfloatnullabledelFe[-2.8/-0.2] Iron depletion (1)phys.abundfloate_delFe[0.06/2.2] Uncertainty in delFestat.errorfloatMCatDisplay data within 2" from Blair+, 2009, J/PASP/121/634 and Welty+, 2012, J/ApJ/745/173meta.ref.urlintnullableSimbadSimbad column added by the CDSmeta.ref.urlchar_RAPositions from Simbad (right ascension part)degpos.eq.ra;meta.main_DEPositions from Simbad (declination part)degpos.eq.dec;meta.main