J/A+A/592/A121ivo://CDS.VizieR/J/A+A/592/A121doi:10.26093/cds/vizier.35920121CDSComparat J.Delubac T.Jouvel S.Raichoor A.Kneib J-P.Yeche C.,Abdalla F.B.Le Cras C.Maraston C.Wilkinson D.M.Zhu G.Jullo E.,Prada F.Schlegel D.Xu Z.Zou H.Bautista J.Bizyaev D.Bolton A.,Brownstein J.R.Dawson K.S.Escoer S.Gaulme P.Kinemuchi K.,Malanushenko E.Malanushenko V.Mariappan V.Newman J.A.Oravetz D.,Pan K.Percival W.J.Prakash A.Schneider D.P.Simmons A.,Abbott T.M.C.Allam S.Banerji M.Benoit-Levy A.Bertin E.Brooks D.,Capozzi D.Carnero Rosell A.Carrasco Kind M.Carretero J.,Castander F.J.Cunha C.E.da Costa L.N.Desai S.Doel P.Eifler T.F.,Estrada J.Flaugher B.Fosalba P.Frieman J.Gaztanaga E.Gerdes D.W.,Gruen D.Gruendl R.A.Gutierrez G.Honscheid K.James D.J.Kuehn K.,Kuropatkin N.Lahav O.Lima M.Maia M.A.G.March M.Marshall J.L.,Miquel R.Plazas A.A.Reil K.Roe N.Romer A.K.Roodman A.,Rykoff E.S.Sako M.Sanchez E.Scarpine V.Sevilla-Noarbe I.,Soares-Santos M.Sobreira F.Suchyta E.Swanson M.E.C.Tarle G.,Thaler J.Thomas D.Walker A.R.Zhang Y.2017-06-19T07:57:00Z2016-08-09T08:29:25ZCDS support team

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

cds-question@unistra.frsurveysgalaxiescatalogsphotometryredshiftedThe Sloan Digital Sky Survey IV extended Baryonic Oscillation Spectroscopic Survey (SDSS-IV/eBOSS) will observe 195,000 emission-line galaxies (ELGs) to measure the Baryonic Acoustic Oscillation standard ruler (BAO) at redshift 0.9. To test different ELG selection algorithms, based on data from several imaging surveys, 9,000 spectra were observed with the SDSS spectrograph as a pilot survey. First, using visual inspection and redshift quality flags, we find that the automated spectroscopic redshifts assigned by the pipeline meet the quality requirements for a robust BAO measurement. Also, we show the correlations between sky emission, signal-to-noise ratio in the emission lines and redshift error. Then we provide a detailed description of each target selection algorithm tested and compare them with the requirements of the eBOSS experiment. As a result, we provide robust redshift distributions for the different target selection schemes tested. Finally, we infer two optimal target selection algorithms to be applied on DECam photometry that fulfill the eBOSS survey electronic efficiency requirements.2016A&A...592A.121Chttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/592/A121CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toII/311 : WISE All-Sky Data Release (Cutri+ 2012)http://www.sdss.org/dr12/ : SDSS DR12 Home Pagehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/592/A121https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/592/A121http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/592/A121https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/592/A121https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/592/A121http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/592/A121GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/592/A121/spallelg (Troncated catalog)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/592/A121/spallelg?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/592/A121/spallelg?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/592/A121/spallelg?GETtext/xml+votable180.050000true215.5524352.467388060.0055555555555555564/1104 5/170-171 512-514 2856-2857 4375 4420-4422 4607 4949 9194-9195 9198 6/674-675 678 698 2060-2062 2064-2066 2080-2081 10741 10743 11402-11403 11406-11407 11432-11433 11436 17493-17495 17497 17525 17692-17694 17697 17700 17730 18423 19793 19804-19805 19807 36773-36775 36786 367982.040811542443644e-19 6.090060298487514e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/592/A121?format=asciiOpticaldefaultJ/A+A/592/A121/spallelgTroncated catalogrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintTSName of the target selection algorithm used (TS)meta.idcharTileSDSS tile number (TILE)meta.idintPlateSDSS plate number (PLATE)obs.fieldintMJDSDSS MJD number (MJD)time.epochintFiberSDSS Fiber numberd (FIBERID)meta.id;meta.mainintRAJ2000PLUG right ascension (J2000) (PLUG_RA)degpos.eq.ra;meta.mainDEJ2000PLUG declination (J2000) (PLUG_DEC)degpos.eq.dec;meta.mainClassClassification (CLASS)src.classcharSubClassSub-classification (SUBCLASS)src.classcharzSDSS spectroscopic redshift (Z)src.redshiftdoublee_z[] Error on e_z (Z_ERR) (1)stat.error;src.redshiftdoublezWar[0/646] z warning code (ZWARNING) (2)meta.codeintzQ[-2/4.5] Redshift flag zQ (zQ) (3)meta.codefloatzCont[0/2.5] Redshift flag zCont (zCont) (4)meta.codefloatUSmag?=- Model SCUSS U magnitude (SCUSS_modeladd)magphot.mag;em.opt.Ufloatnullablee_USmag?=- Error on USmag (SCUSS_modeladderr)magstat.error;phot.magdoublenullableumag?=- Model SDSS u magnitude (SDSS_modelmag_u)magphot.mag;em.opt.Ufloatnullablegmag?=- Model SDSS g magnitude (SDSS_modelmag_g)magphot.mag;em.opt.Bfloatnullablermag?=- Model SDSS r magnitude (SDSS_modelmag_r)magphot.mag;em.opt.Rfloatnullableimag?=- Model SDSS i magnitude (SDSS_modelmag_i)magphot.mag;em.opt.Ifloatnullablezmag?=- Model SDSS z magnitude (SDSS_modelmag_z)magphot.mag;em.opt.Ifloatnullablee_umag?=- Error on umag (SDSS_modelmagerr_u)magstat.error;phot.mag;em.opt.Udoublenullablee_gmag?=- Error on gmag (SDSS_modelmagerr_g)magstat.error;phot.mag;em.opt.Bdoublenullablee_rmag?=- Error on rmag (SDSS_modelmagerr_r)magstat.error;phot.mag;em.opt.Rdoublenullablee_imag?=- Error on imag (SDSS_modelmagerr_i)magstat.error;phot.mag;em.opt.Idoublenullablee_zmag?=- Error on zmag (SDSS_modelmagerr_z)magstat.error;phot.mag;em.opt.IdoublenullableExtu?=- Extinction in u band (EXTINCTION_U)magphys.absorptiondoublenullableExtg?=- Extinction in g band (EXTINCTION_G)magphys.absorptiondoublenullableExtr?=- Extinction in r band (EXTINCTION_R)magphys.absorptiondoublenullableExti?=- Extinction in i band (EXTINCTION_I)magphys.absorptiondoublenullableExtz?=- Extinction in z band (EXTINCTION_Z)magphys.absorptiondoublenullableRACdeg?=- CFHT right ascension (J2000) (CFHT_alpha)degpos.eq.ranullableDECdeg?=- CFHT declination (J2000) (CFHT_delta)degpos.eq.decnullablefCFHT?=- CFTH flag (CFHT_flag) (5)meta.codeintnullableS/G[0/1]?=- CFHT galaxy/star parameter (CFHT_starGal)stat.paramintnullabler2?=- radius enclosing half the flux (CFHT_r2)pixphys.angSize;srcfloatnullablezph?=- CFHT photometric redshift (CFHT_zphot)src.redshiftdoublenullableUmag?=- CFHT u magnitude (CFHT_U)magphot.mag;em.opt.UfloatnullableGmag?=- CFHT g magnitude (CFHT_G)magphot.mag;em.opt.VfloatnullableRmag?=- CFHT r magnitude (CFHT_R)magphot.mag;em.opt.RfloatnullableImag?=- CFHT i magnitude (CFHT_I)magphot.mag;em.opt.IfloatnullableYmag?=- CFHT y magnitude (CFHT_Y)magphot.mag;em.IR.JfloatnullableZmag?=- CFHT z magnitude (CFHT_Z)magphot.mag;em.opt.Ifloatnullablee_Umag?=- Error on Umag (CFHT_eU)magstat.error;phot.mag;em.opt.Ufloatnullablee_Gmag?=- Error on Gmag (CFHT_eG)magstat.error;phot.mag;em.opt.Bfloatnullablee_Rmag?=- Error on Rmag (CFHT_eR)magstat.error;phot.mag;em.opt.Rfloatnullablee_Imag?=- Error on Imag (CFHT_eI)magstat.error;phot.mag;em.opt.Ifloatnullablee_Ymag?=- Error on Ymag (CFHT_eY)magstat.error;phot.mag;em.opt.Bfloatnullablee_Zmag?=- Error on Zmag (CFHT_eZ)magstat.error;phot.mag;em.opt.IfloatnullableSpInteractive spectrum from SDSSmeta.ref.urlchar