J/AJ/155/104ivo://CDS.VizieR/J/AJ/155/104doi:10.26093/cds/vizier.51550104CDSRigby J.R.Bayliss M.B.Sharon K.Gladders M.D.Chisholm J.Dahle H.,Johnson T.Paterno-Mahler R.Wuyts E.Kelson D.D.2020-10-28T12:15:23Z2018-11-16T12:35:05ZCDS support team

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

cds-question@unistra.frgalaxiesgravitational-lensingvisible-astronomyspectroscopyultraviolet-astronomystar-atlasesWe introduce Project MEGaSaURA: the Magellan Evolution of Galaxies Spectroscopic and Ultraviolet Reference Atlas. MEGaSaURA comprises medium-resolution, rest-frame ultraviolet spectroscopy of N=15 bright gravitationally lensed galaxies at redshifts of 1.68<z<3.6, obtained with the MagE spectrograph on the Magellan telescopes. The spectra cover the observed-frame wavelength range 3200<{lambda}_o_<8280{AA}; the average spectral resolving power is R=3300. The median spectrum has a signal-to- noise ratio (S/N)=21 per resolution element at 5000{AA}. As such, the MEGaSaURA spectra have superior S/N and wavelength coverage compared to what COS/HST provides for starburst galaxies in the local universe. This paper describes the sample, the observations, and the data reduction. We compare the measured redshifts for the stars, the ionized gas as traced by nebular lines, and the neutral gas as traced by absorption lines; we find the expected bulk outflow of the neutral gas, and no systemic offset between the redshifts measured from nebular lines and the redshifts measured from the stellar continuum.2018AJ....155..104Rhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/155/104CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toB/hst : HST Archived Exposures Catalog (STScI, 2007)J/A+AS/103/97 : Grids of stellar models V. (Meynet+ 1994)J/ApJS/193/8 : Spectroscopy of 26 lensing cluster cores (Bayliss+, 2011)J/ApJ/794/156 : MgII/FeII absorption profile for 0.3<z<1.4 gal. (Rubin+, 2014)J/ApJ/814/L6 : CIII] emission in near & far star-forming gal. (Rigby+, 2015)J/ApJ/853/87 : MEGaSaURA. II. Stacked spectra (Rigby+, 2018)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/155/104https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/155/104http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/155/104https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/155/104https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/155/104http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/155/104GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/AJ/155/104/sample (The MEGaSaURA redshifts (tables 1 and 4))https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/155/104/sample?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/155/104/sample?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/155/104/sample?GETtext/xml+votable180.050000true1.21535417-1.055794440.0055555555555555566/4876 8260 8378 17405 18144 18307 18534 19089 19104 27045 27356 28086 28249 36331 45055https://cdsarc.cds.unistra.fr/viz-bin/moc/J/AJ/155/104?format=asciiUVOpticaldefaultJ/AJ/155/104/sampleThe MEGaSaURA redshifts (tables 1 and 4)SimbadNameSimbad column added by the CDSmeta.idcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintGalGalaxy namemeta.id;meta.maincharprimaryNameArc name within galaxymeta.id.part;meta.maincharRAJ2000Hour of Right Ascension (J2000) (1)pos.eq.ra;meta.mainDEJ2000Degree of Declination (J2000) (1)pos.eq.dec;meta.mainTexp[1/14] Total MagE/Magellan on-source integration timehtime.epochfloatR[2500/4760] MagE spectral resolution (2)spect.resolutioninte_R[70/230] Uncertainty in Rstat.errorintE(B-V)[0.02/0.09] Reddening due to the Milky Way Galaxy, Green+ (2015ApJ...810...25G); values from Note in spectrum files (3)magphot.color.excessdoubleDiscDiscovery paper(s) for the arc (4)meta.bibcharRefsAdditional references, in bibcodesmeta.ref;pos.framecharz-star[1.6/3.5]? stellar redshiftsrc.redshift;pos.heliocentricfloatnullablee_z-star[0.0003/0.001]? uncertainty in z-starstat.error;phot.colorfloatnullablez-neb[1.6/3.7]? nebular redshiftsrc.redshift;pos.heliocentricdoublenullablee_z-neb[7e-06/0.0008]? uncertainty in z-nebstat.errordoublenullablez-ism[1.6/3.7] ISM redshiftsrc.redshift;pos.heliocentricdoublee_z-ism[0.0001/0.02] uncertainty in z-ismstat.errorfloatNotesNotes (1)meta.noteFileAbbreviated source name used in file names; column added by CDSmeta.id;instr.setup;meta.filecharNobsNumber of observations for this source (link to table 3)meta.numberintnullableJ/AJ/155/104/table2Oxygen abundances for the MEGaSaURA sampleSimbadNameSimbad column added by the CDSmeta.idcharMethodMethodmeta.bibcharRefReference (1)meta.ref;pos.framecharNotesNotesmeta.notecharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintGalSource name of Galaxymeta.id;meta.maincharprimaryl_[NII]/HaLimit flag onmeta.code.errorchar[NII]/Ha[-1.4/-0.6]? Measured log([NII]6583/H{alpha}) ratiophot.flux;arith.ratiofloatnullablee_[NII]/Ha[0.04/0.07]? Uncertainty on [NII]/Hastat.errorfloatnullablel_[O/H]Limit flag on [O/H]meta.code.error;phys.abundchar[O/H][7.9/8.6]? Inferred oxygen abundancephys.abundfloatnullablee_[O/H][0.03/0.3]? Lower or symmetric uncertainty on [O/H]stat.error;phys.abundfloatnullableE_[O/H][0.3/0.4]? Upper uncertainty on [O/H]stat.error;stat.maxfloatnullableJ/AJ/155/104/table3Observation logrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintGalGalaxy namemeta.id;meta.maincharprimaryNameArc name within galaxymeta.id.part;meta.maincharObsUniversal Date, YYYY-MM-DD (1)stime.epochnullableTexp[900/4500] integration time, seconds (1)stime.epochintAirmass[1/1.9] Airmass, sec(z) (1)obs.airMassfloatWidth[0.7/2] Slit width, arcsecondsarcsecspect.line.widthfloatPosA[30/302] Position angle of slit, degrees east of northdegpos.posAngintParA[117/326] parallactic of slit, degrees east of north (1)degobs.paramint