J/MNRAS/442/946ivo://CDS.VizieR/J/MNRAS/442/946doi:10.26093/cds/vizier.74420946CDSDiaz C.G.Koyama Y.Ryan-Weber E.V.Cooke J.Ouchi M.Shimasaku K.,Nakata F.2024-08-10T20:17:57Z2015-06-05T14:37:49ZCDS support team

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

cds-question@unistra.frgalaxiesphotometryMetal absorption systems are products of star formation. They are believed to be associated with massive star-forming galaxies, which have significantly enriched their surroundings. To test this idea with high column density CIV absorption systems at z~5.7, we study the projected distribution of galaxies and characterize the environment of CIV systems in two independent quasar lines of sight: J103027.01+052455.0 and J113717.73+354956.9. Using wide-field photometry (~80x60h^-1^ comoving Mpc), we select bright (M_UV(1350{AA})_<~-21.0mag) Lyman break galaxies (LBGs) at z~5.7 in a redshift slice {Delta}z~0.2 and we compare their projected distribution with z~5.7 narrow-band selected Lyman alpha emitters (LAEs, {Delta}z~0.08). We find that the CIV systems are located more than 10h^-1^ projected comoving Mpc from the main concentrations of LBGs and no candidate is closer than ~5h^-1^ projected comoving Mpc. In contrast, an excess of LAEs - lower mass galaxies - is found on scales of ~10h^-1^ comoving Mpc, suggesting that LAEs are the primary candidates for the source of the CIV systems. Furthermore, the closest object to the system in the field J1030+0524 is a faint LAE at a projected distance of 212h^-1^ physical kpc. However, this work cannot rule out undiscovered lower mass galaxies as the origin of these absorption systems. We conclude that, in contrast with lower redshift examples (z<~3.5), strong CIV absorption systems at z~5.7 trace low-to-intermediate density environments dominated by low-mass galaxies. Moreover, the excess of LAEs associated with high levels of ionizing flux agrees with the idea that faint galaxies dominate the ionizing photon budget at this redshift.2014MNRAS.442..946Dhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/442/946CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/PASJ/57/165 : Ly{alpha} emitters in SUBARU Deep Field (Taniguchi+, 2005)J/ApJ/648/7 : Ly{alpha} emitters at z=6.5 in Subaru Deep FieldJ/ApJ/693/507 : Stars of Lyman break galaxies at z~5 (Yabe+, 2009)J/ApJ/760/128 : Ly{alpha} emission from 4<z<6 sources in COSMOSJ/MNRAS/435/1198 : z~6 QSOs CIV doublet absorption systems (D'Odorico+, 2013)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/442/946https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/442/946http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/442/946https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/442/946https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/442/946http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/442/946GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/442/946/tablee (Sources detected in the 2 fields: Lyman break galaxies (LBGs), i'-dropouts, Lyman alpha emitters (LAEs))https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/442/946/tablee?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/442/946/tablee?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/442/946/tablee?GETtext/xml+votable180.050000true157.3918755.60266670.0055555555555555566/5397 5440 27440 286502.4373599350203794e-19 3.3785437584409506e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/442/946?format=asciiOpticaldefaultJ/MNRAS/442/946/tableeSources detected in the 2 fields: Lyman break galaxies (LBGs), i'-dropouts, Lyman alpha emitters (LAEs)recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintTypSimbad column added by the CDSsrc.classcharFSimbad column added by the CDSobs.fieldcharRAJ2000Right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Declination (J2000)pos.eq.dec;meta.mainl_Rcmag[~> ] Limit flag on Rcmagmeta.code.errorRcmagCousins R magnitude in 2" or 2.4" aperture (1)magphot.mag;em.opt.Rfloate_Rcmag? rms uncertainty on Rcmagmagstat.error;phot.mag;em.opt.Rfloatnullablel_i'mag[~> ] Limit flag on imagmeta.code.errori'magi' magnitude (2"or 2.4" aperture radius) (1)magphot.mag;em.opt.Ifloate_i'mag? rms uncertainty on imagmagstat.error;phot.mag;em.opt.Ifloatnullablel_z'mag[~> ] Limit flag on z'magmeta.code.errorz'magz' magnitude (2"or 2.4" aperture radius) (1)magphot.mag;em.opt.Ifloate_z'mag? rms uncertainty on z'magmagstat.error;phot.mag;em.opt.Ifloatnullablel_NBCiv[~> ] Limit flag on NBCivmeta.code.errorNBCivMagnitude in narrow-band NBCiv filter (8162{AA}) magnitude (2" or 2.4" aperture radius) (1)magphot.mag;em.UVfloate_NBCiv? rms uncertainty on NBCivmagstat.errorfloatnullablez'magaz' magnitude (MAG_AUTO)magphot.mag;em.opt.Ifloate_z'magarms uncertainty on z'magmagstat.error;phot.mag;em.opt.IfloatrhlHalf-light radius (1pix=0.2arcsec)pixphys.angSize;srcfloatS/G[0/1] Stellarity index in z'-band (0=galaxy, 1=star)meta.notefloat