J/ApJ/736/18ivo://CDS.VizieR/J/ApJ/736/18doi:10.26093/cds/vizier.17360018CDSNestor D.B.Shapley A.E.Steidel C.C.Siana B.2017-12-22T05:32:18Z2013-01-23T07:30:40ZCDS support team

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

cds-question@unistra.frgalaxiesvisible-astronomyredshiftedsurveysphotometryultraviolet-astronomyWe present the results of an ultradeep, narrowband imaging survey for Lyman-continuum (LyC) emission at z~3 in the SSA22a field. We employ a custom narrowband filter centered at {lambda}=3640{AA} (NB3640), which probes the LyC region for galaxies at z>=3.06. We also analyze new and archival NB4980 imaging tuned to the wavelength of the Ly{alpha} emission line at z=3.09, and archival broadband B, V, and R images of the non-ionizing UV continuum. Our NB3640 images contain 26 z>=3.06 Lyman break galaxies (LBGs) as well as a set of 130 Ly{alpha} emitters (LAEs), identified by their excess NB4980 flux relative to the BV continuum. Six LBGs and 28 LAEs are detected in the NB3640 image. LBGs appear to span a range of NB3640-R colors, while LAEs appear bimodal in their NB3640-R properties. We estimate average UV-to-LyC flux density ratios.2011ApJ...736...18Nhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/736/18CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toB/hst : HST Archived Exposures Catalog (STScI, 2007)J/MNRAS/401/1521 : Stellar masses of LBGs at z~3 (Magdis+, 2010)J/A+A/498/13 : Lyman-{alpha} emitters from redshifts z~2-3 (Nilsson+, 2009)J/ApJ/705/639 : Sizes of Lyman alpha emitters at z=3.1 (Bond+, 2009)J/ApJ/592/728 : Lyman break galaxies at redshift z~3 (Steidel+, 2003)J/PASJ/53/653 : SSA 22 field NIR imaging (Tamura+, 2001)J/ApJ/519/1 : Lyman-break galaxies at z {>~} 4 (Steidel+, 1999)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/736/18https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/736/18http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/736/18https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/736/18https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/736/18http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/736/18GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/736/18/lbg (Lyman break galaxies (LBGs) photometry (tables 4 and 9))https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/736/18/lbg?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/736/18/lbg?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/736/18/lbg?GETtext/xml+votable180.050000true334.36366670.30269440.005555555555555556Cone search capability for table J/ApJ/736/18/lae (Ly{alpha} emitters (LAEs) photometry (tables 5 and 10))https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/736/18/lae?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/736/18/lae?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/736/18/lae?GETtext/xml+votable180.050000true334.35329170.28816670.0055555555555555566/19033 190362.762881831355591e-19 3.3785437584409506e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/736/18?format=asciiUVOpticaldefaultJ/ApJ/736/18/lbgLyman break galaxies (LBGs) photometry (tables 4 and 9)recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintDetSimbad column added by the CDSmeta.codecharIDSource identificationmeta.id;meta.maincharRAJ2000[22] Hour of right ascension (J2000)pos.eq.ra;meta.mainDEJ2000[0] Degree of declination (J2000)pos.eq.dec;meta.mainzem[3.07/3.30]? Ly{alpha} emission redshiftsrc.redshiftfloatnullablezabs[3.06/3.29]? Interstellar absorption redshiftsrc.redshiftfloatnullableRmag[23.49/25.2] R-band AB magnitudemagphot.mag;em.opt.Rfloat[3640]? Narrow-band 3640 magnitude (only for table 4)magphot.mag;em.optfloatnullabledelR? Spatial offset between the centroids of R-band and NB3640 emission (only for table 4)arcsecpos.angDistancefloatnullablel_FUV/FoLimit flag on FUV/Fometa.code.errorcharFUV/Fo[1.4/29.2] Observed ratio in non-ionizing UV and LyC emission (G1)phot.flux;arith.ratiofloate_FUV/Fo? FUV/Fo uncertaintystat.errorfloatnullableFUV/Fc? Ratio of non-ionizing UV continuum and LyC emission (only for table 4) (G2)phot.flux;arith.ratiofloatnullablee_FUV/Fc? FUV/Fc uncertaintystat.errorfloatnullableSimbadSimbad column added by the CDSmeta.refcharNEDSimbad column added by the CDSmeta.refcharJ/ApJ/736/18/laeLy{alpha} emitters (LAEs) photometry (tables 5 and 10)recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintDetSimbad column added by the CDSmeta.codecharSeqSource number (003-118 for table 5; 001-130 for table 10)meta.id;meta.mainintf_Seq[c-i] Flag on Seq (1)meta.codecharRAJ2000[22] Hour of right ascension (J2000)pos.eq.ra;meta.mainDEJ2000[0] Degree of declination (J2000)pos.eq.dec;meta.main[4980][23/26.49] Keck/LRIS NB4980 magnitudemagphot.mag;em.optfloatl_BV-4980Limit flag on BV-4980meta.code.errorcharBV-4980[0.71/2.68] BV-NB4980 color indexmagphot.color;em.opt;em.optfloatl_EW0Limit flag on EW0meta.code.errorcharEW0[19/400] Ly{alpha} rest equivalent width estimated from BV-NB4980 color index0.1nmspect.line.eqWidthintl_RmagLimit flag on Rmagmeta.code.errorcharRmag[23.92/27] R-band AB magnitudemagphot.mag;em.opt.Rfloat[3640]? Narrow-band 3640 magnitude (only for table 5)magphot.mag;em.optfloatnullabledelR? Spatial offset between the centroids of R and NB3640 emission (only for table 5)arcsecpos.angDistancefloatnullablef_delR[e] e: offset determined from the centroid of BV detectionmeta.codechardelLya? Spatial offset between the centroids of Ly{alpha} and NB3640 emission (only for table 5)arcsecpos.angDistancefloatnullablel_FUV/FoLimit flag on FUV/Fometa.code.errorcharFUV/Fo[0.5/22.4]? Observed ratio in non-ionizing UV and LyC emission (G1)phot.flux;arith.ratiofloatnullablee_FUV/Fo? FUV/Fo uncertaintystat.errorfloatnullablel_FUV/FcLimit flag on FUV/Fcmeta.code.errorcharFUV/Fc? Ratio of non-ionizing UV continuum and LyC emission (G2)phot.flux;arith.ratiofloatnullablee_FUV/Fc? FUV/Fc uncertaintystat.errorfloatnullable