J/ApJ/666/674ivo://CDS.VizieR/J/ApJ/666/674doi:10.26093/cds/vizier.16660674CDSMiknaitis G.Pignata G.Rest A.Wood-Vasey W.M.Blondin S.Challis P.,Smith R.C.Stubbs C.W.Suntzeff N.B.Foley R.J.Matheson T.,Tonry J.L.Aguilera C.Blackman J.W.Becker A.C.Clocchiatti A.,Covarrubias R.Davis T.M.Filippenko A.V.Garg A.Garnavich P.M.,Hicken M.Jha S.Krisciunas K.Kirshner R.P.Leibundgut B.Li W.,Miceli A.Narayan G.Prieto J.L.Riess A.G.Salvo M.E.Schmidt B.P.,Sollerman J.Spyromilio J.Zenteno A.2017-12-12T14:45:23Z2010-03-18T14:46:12ZCDS support team

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

cds-question@unistra.frsurveyssupernovaeWe describe the implementation and optimization of the ESSENCE supernova survey, which we have undertaken to measure the dark energy equation-of-state parameter, w=P/({rho}c^2^). We present a method for optimizing the survey exposure times and cadence to maximize our sensitivity to w for a given fixed amount of telescope time. For our survey on the CTIO 4m telescope, measuring the luminosity distances and redshifts for supernovae at modest redshifts (z~0.5+/-0.2) is optimal for determining w. We describe the data analysis pipeline based on using reliable and robust image subtraction to find supernovae automatically and in nearly real time.2007ApJ...666..674Mhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/666/674CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toB/sn : Asiago Supernova Catalogue (Barbon et al., 1999-)J/AJ/130/2453 : 9 high-redshift ESSENCE supernovae (Krisciunas+, 2005)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/666/674https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/666/674http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/666/674https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/666/674https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/666/674http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/666/674GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/666/674/table3 (Types and redshifts of ESSENCE supernovae)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/666/674/table3?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/666/674/table3?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/666/674/table3?GETtext/xml+votable180.050000true3.3879167-10.21942220.0055555555555555565/4425 6/17251 17295 17316 17318 17319 17321 17324 17325 17326 17668 17699 17709 17714 17999 18008 18010 18011 18032 18033 18075 36774 36775 36779 36780 36781 36783 36786 36792 36794https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/666/674?format=asciidefaultJ/ApJ/666/674/table3Types and redshifts of ESSENCE supernovaeType? Supernova typesrc.classcharSType? Sub-typesrc.classcharDEJ2000Declination (J2000)pos.eq.dec;meta.mainrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSNSupernova name (YYYYaa)meta.idcharf_SN[abcd] Missing SN type or redshift (1)meta.codecharRAJ2000Right ascension (J2000)pos.eq.ra;meta.mainESSENCEESSENCE ID (aNNN)meta.id;meta.maincharPSType? Subtype probability%statfloatnullableIa? Type Ia probability%statfloatnullableIb/c? Type Ib/c probability%statfloatnullableII? Type II probability%statfloatnullablezGal? Galaxy redshiftsrc.redshift;pos.heliocentricfloatnullablezSN? Supernove redshiftsrc.redshift;pos.heliocentricfloatnullablee_zSN? rms uncertainty on zSNstat.errorfloatnullableSimbadSimbad column added by the CDSmeta.ref.urlchar