J/ApJ/865/L1ivo://CDS.VizieR/J/ApJ/865/L1doi:10.26093/cds/vizier.18659001CDSMaseda M.V.Bacon R.Franx M.Brinchmann J.Schaye J.Boogaard L.A.,Bouche N.Bouwens R.J.Cantalupo S.Contini T.Hashimoto T.Inami H.,Marino R.A.Muzahid S.Nanayakkara T.Richard J.Schmidt K.B.,Verhamme A.Wisotzki L.2019-10-15T13:39:02Z2019-10-14T09:08:09ZCDS support team

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

cds-question@unistra.frgalaxiesspectroscopyredshiftedultraviolet-astronomyvisible-astronomyUsing an ultra-deep blind survey with the MUSE integral field spectrograph on the European Southern Observatory Very Large Telescope, we obtain spectroscopic redshifts to a depth never before explored: galaxies with observed magnitudes m_AB_>~30-32. Specifically, we detect objects via Ly{alpha} emission at 2.9<z<6.7 without individual continuum counterparts in areas covered by the deepest optical/near-infrared imaging taken by the Hubble Space Telescope, the Hubble Ultra Deep Field. In total, we find 102 such objects in 9 square arcminutes at these redshifts. Detailed stacking analyses confirm the Ly{alpha} emission as well as the 1216 {AA} breaks and faint ultraviolet continua (M_UV_~-15). This makes them the faintest spectroscopically confirmed objects at these redshifts, similar to the sources believed to reionize the universe. A simple model for the expected fraction of detected/undetected Ly{alpha} emitters as a function of luminosity is consistent with these objects being the high-equivalent width tail of the normal Ly{alpha}-emitter population at these redshifts.2018ApJ...865L...1Mhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/865/L1CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toVI/109 : Population Synthesis Models at very low metallicities (Schaerer, 2003)II/258 : Hubble Ultra Deep Field Catalog (UDF) (STScI, 2004)J/ApJS/173/185 : GALEX ultraviolet atlas of nearby galaxies (Gil de Paz+, 2007)J/ApJ/667/79 : Ly{alpha} emission-line galaxies at z=3.1 (Gronwall+, 2007)J/ApJS/176/301 : Subaru/XMM-Newton deep survey IV. (SXDS) (Ouchi+, 2008)J/A+A/523/A64 : UV properties of starbursts (Raiter+, 2010)J/ApJ/772/48 : Emission-line galaxies from PEARS. II. (Pirzkal+, 2013)J/A+A/575/A75 : MUSE 3D view of HDF-S (Bacon+, 2015)J/ApJ/803/34 : z~4-10 galaxies from HST legacy fields (Bouwens+, 2015)J/AJ/150/31 : Photom. & redshifts of galaxies in the UDF (Rafelski+, 2015)J/ApJS/219/15 : Morphologies of z=0-10 galaxies with HST data (Shibuya+, 2015)J/A+A/608/A2 : MUSE Hubble Ultra Deep Field Survey. II. (Inami+, 2017)J/A+A/608/A8 : MUSE Hubble Ultra Deep Field Survey. VIII (Leclercq+, 2017)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/865/L1https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/865/L1http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/865/L1https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/865/L1https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/865/L1http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/865/L1GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/865/L1/table1 (Properties of HST-undetected MUSE Ly{alpha} emitters (LAEs))https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/865/L1/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/865/L1/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/865/L1/table1?GETtext/xml+votable180.050000true53.17032-27.778350.0055555555555555566/35935https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/865/L1?format=asciiUVOpticaldefaultJ/ApJ/865/L1/table1Properties of HST-undetected MUSE Ly{alpha} emitters (LAEs)recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordint[IBB2017][6316/7395] MUSE identifiermeta.id;meta.mainintRAJ2000[53.13/53.2] Right Ascension (J2000)degpos.eq.ra;meta.mainDEJ2000[-27.9/-27.7] Declination (J2000)degpos.eq.dec;meta.mainz[2.9/6.6] Spectroscopic redshiftsrc.redshiftfloatLya[74/1980] Ly{alpha} flux; in 1e-20erg/s/cm^2^ unitsphot.flux;em.line.Lyalpha;spect.linefloate_Lya[6/87] Uncertainty in Lyastat.errorfloatlogLLya[41/42.3] log Ly{alpha} luminosity; in erg/s unitslog(1e-07W)phys.luminosity;em.UVfloate_logLLya[0.007/0.2] Uncertainty in logLLyalog(1e-07W)stat.errordoubleS/N-F435W[-1.8/1.5] HST F435W filter Signal-to-Noise valuestat.snrfloatS/N-F606W[-1.9/5] HST F606W filter Signal-to-Noise valuestat.snrfloatS/N-F775W[-2/5] HST F775W filter Signal-to-Noise valuestat.snrfloatSimbadSimbad column added by the CDSmeta.ref.urlchar