J/A+A/695/A206ivo://CDS.VizieR/J/A+A/695/A206doi:10.26093/cds/vizier.36950206CDSJoshi R.Das S.Fumagalli M.Fossati M.Peroux C.Chaudhary R.,Yesuf M.H.Ho C.L.2025-05-21T20:02:33Z2025-03-19T07:35:46ZCDS support team

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

cds-question@unistra.frgalaxiesphotometryvisible-astronomyspectroscopyWe study the galaxies hosting ultra-strong MgII (USMgII) absorbers at small impact parameters of ~2" (5-20kpc), spanning a redshift range of 0.4<=z<=1.7, using deep, high-resolution images from Hyper Suprime-Cam Subaru Strategic Survey and spectra from SDSS survey. To explore the physical origin of USMgII absorbers and characterize the associated galaxies. We performed a galaxy spectral energy distribution fitting using optical and near-IR multi-band data to identify the potential absorber host galaxies. Further, we search for [OII] nebular emission line from absorber galaxy in the SDSS fiber spectra. From a total of 418 USMgII absorbers with W_2796_>=3{AA} along 412 quasar sightlines, we detect 50 galaxies based on [OII] {lambda}{lambda}3727,3729 nebular emission detected at >=2{sigma} level. Utilizing the [OII] emission from the stacked spectrum and employing the best-fit galaxy SED template, we further identify 86 galaxies, leading to a total of 136 bona fide USMgII galaxies. With a prerequisite of having a minimum of four HSC passbands available, we find a detection rate of ~38% at an average impact parameter of 11.4kpc. We find that galaxies hosting USMgII systems are typically star-forming main sequence galaxies, with 21% exhibiting a starburst nature. The non-zero [OII] emission along the 'clear' sightlines, with no stellar counterpart, hints that the USMgII absorbers may likely emanate from the unseen faint galaxies near the quasar. The USMgII absorbers preferentially align along the major and minor axes of the galaxy, which suggests that they originate in the disk or large-scale wind. We show that the distribution of W_2796_ as a function of impact parameter indicates a discernible radial dependence for the 'disk' and 'wind' subsets, with the observed large scatter in W_2796_ potentially attributed to large-scale outflows. The quasar sightline hosting USMgII systems show a factor three higher galaxy surface density at impact parameters of <~50kpc, highlights the multiple pathways giving rise to USMgII absorption.2025A&A...695A.206Jhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/695/A206CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/A+A/695/A207 : BEINGMgII. II Galaxies with strong MgII absorbers (Das+, 2025)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/695/A206https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/695/A206http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/695/A206https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/695/A206https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/695/A206http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/695/A206GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/695/A206/catalog (Physical properties of galaxies associated with USMgII absorbers)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/695/A206/catalog?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/695/A206/catalog?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/695/A206/catalog?GETtext/xml+votable180.050000true151.815330.716350.0055555555555555566/4101 4104 4136 4138 9819 9837 9921 10583 10601 10616 10654 10669 11270 11272 11424 11426-11427 17686 17690 17700 17705 17707 17713 17721 17725 17742 17767 17770 17786 17788 17790 17809 17823 17831 17849 17853-17854 17859-17860 17864 18002 18007 18033 18046 18065 18070 18075-18077 18089 18119-18120 18129 18184-18185 18679 18772 18808-18809 18812 18814 18837 18839 18841 18844 18851 18855 18857 18869 19023 19029 19033 19057-19058 19062 19065 19201 19205 19220 19266 19459-19460 19468 21873 21876 25597 25599 25930 25937 25948 25961 26026 26050 26068 26196 26237 26269 26277 26295 26369 26955 26990 26995 27048 27063 27070 27108 27220 27222 27226 27245 27248 27262 27319 27327 27343 27345 27347 27366 27411 27433 27653 27663 27668 36795 36799https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/695/A206?format=asciiOpticaldefaultJ/A+A/695/A206/catalogPhysical properties of galaxies associated with USMgII absorbersrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintQSOSDSS J2000 quasar name (JHHMMSS.ss+DDMMSS.s)meta.id;meta.maincharzabsMgII absorber redshiftsrc.redshiftfloatWr2796MgII 2796{AA} rest equivalent width0.1nmspect.line.eqWidthfloate_Wr2796Error on the MgII 2796{AA} rest equivalent width0.1nmstat.errorfloatWr2803MgII 2803{AA} rest equivalent width0.1nmspect.line.eqWidthfloate_Wr2803Error on the MgII 2803{AA} rest equivalent width0.1nmstat.errorfloatRAJ2000Galaxy right ascension (J2000)degpos.eq.ra;meta.mainDEJ2000Galaxy declination (J2000)degpos.eq.dec;meta.mainrhoImpact parameterkpcsrc.impactParamfloatphi? Azimuthal angledegpos.posAngfloatnullableb_logMstar? Stellar mass lower boundlog(solMass)phys.mass;stat.minfloatnullablelogMstar? Stellar masslog(solMass)phys.massfloatnullableB_logMstar? Stellar mass upper boundlog(solMass)phys.mass;stat.maxfloatnullableb_SFR? Star formation rate lower boundsolMass/yrphys.SFR;stat.minfloatnullableSFR? Star formation ratesolMass/yrphys.SFRfloatnullableB_SFR? Star formation rate upper boundsolMass/yrphys.SFR;stat.maxfloatnullableCategory[1A 1B 3A] Detection setmeta.idchar