J/MNRAS/471/267ivo://CDS.VizieR/J/MNRAS/471/267doi:10.26093/cds/vizier.74710267CDSDrake A.B.Guiderdoni B.Blaizot J.Wisotzki L.Herenz E.C.Garel T.,Richard J.Bacon R.Bina D.Cantalupo S.Contini T.Den Brok M.,Hashimoto T.Marino R.A.Pello R.Schaye J.Schmidt K.B.2024-08-17T20:20:20Z2020-07-03T14:25:05ZCDS support team

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

cds-question@unistra.frgalaxiesspectroscopyredshiftedh-i-line-emissionWe present the first estimate of the Ly{alpha} luminosity function using blind spectroscopy from the Multi Unit Spectroscopic Explorer, MUSE, in the Hubble Deep Field-South. Using automatic source-detection software, we assemble a homogeneously detected sample of 59 Ly{alpha} emitters covering a flux range of -18.0<log_10_(F)<-16.3(erg/s/cm2), corresponding to luminosities of 41.4<log_10_(L)<42.8(erg/s). As recent studies have shown, Ly{alpha} fluxes can be underestimated by a factor of 2 or more via traditional methods, and so we undertake a careful assessment of each object's Ly{alpha} flux using a curve-of-growth analysis to account for extended emission. We describe our self-consistent method for determining the completeness of the sample, and present an estimate of the global Ly {alpha} luminosity function between redshifts 2.91<z<6.64 using the 1/V_max_ estimator. We find that the luminosity function is higher than many number densities reported in the literature by a factor of 2-3, although our result is consistent at the 1{sigma} level with most of these studies. Our observed luminosity function is also in good agreement with predictions from semi-analytic models, and shows no evidence for strong evolution between the high- and low-redshift halves of the data. We demonstrate that one's approach to Ly{alpha} flux estimation does alter the observed luminosity function, and caution that accurate flux assessments will be crucial in measurements of the faint-end slope. This is a pilot study for the Ly{alpha} luminosity function in the MUSE deep-fields, to be built on with data from the Hubble Ultra Deep Field that will increase the size of our sample by almost a factor of 10.2017MNRAS.471..267Dhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/471/267CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/A+A/575/A75 : MUSE 3D view of HDF-S (Bacon+, 2015)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/471/267https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/471/267http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/471/267https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/471/267https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/471/267http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/471/267GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/471/267/tablea1 (Various flux estimates for all 59 objects detected automatically with MUSELET)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/471/267/tablea1?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/471/267/tablea1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/471/267/tablea1?GETtext/xml+votable180.050000true338.2168-60.56180.0055555555555555566/45526https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/471/267?format=asciiRadiodefaultJ/MNRAS/471/267/tablea1Various flux estimates for all 59 objects detected automatically with MUSELETrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIDID of the object in Bacon et al. (2015, J/A+A/575/A75), [BBR2015] NNN in Simbadmeta.id;meta.mainintRAJ2000MUSELET right ascension (J2000)degpos.eq.ra;meta.mainDEJ2000MUSELET declination (J2000)degpos.eq.dec;meta.mainlambdaObsPeak wavelength of MUSELET's detection0.1nmem.wlfloatzLyaLy{alpha} redshiftssrc.redshift;pos.heliocentricfloatFluxB15Ly{alpha} Flux from Bacon et al. (2015, Cat. J/A+A/575/A75)1e-21W.m**-2phot.fluxfloatFluxW16? Ly{alpha} Flux from Wisotzki (2016A&A...587A..98W)1e-21W.m**-2phot.fluxfloatnullableFlux2This work 2 arcsec aperture Ly{alpha} flux estimate1e-21W.m**-2phot.fluxfloate_Flux2rms uncertainty on Flux21e-21W.m**-2stat.errorfloatFluxCoGCurve of growth Ly{alpha} flux estimate from this work1e-21W.m**-2phot.fluxfloate_FluxCoGrms uncertainty on FluxCoG1e-21W.m**-2stat.errorfloatDiamDiameter of the aperture within which we make the flux measurement in the curve-of-growth analysisarcsecinstr.fovfloatSimbadSimbad column added by the CDSmeta.ref.urlchar