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<ri:Resource created="2017-04-13T14:01:20Z" status="active" updated="2025-07-18T20:15:07Z" version="1.2" xmlns:cs="http://www.ivoa.net/xml/ConeSearch/v1.0" xmlns:ri="http://www.ivoa.net/xml/RegistryInterface/v1.0" xmlns:vr="http://www.ivoa.net/xml/VOResource/v1.0" xmlns:vs="http://www.ivoa.net/xml/VODataService/v1.1" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.ivoa.net/xml/ConeSearch/v1.0 http://vo.ari.uni-heidelberg.de/docs/schemata/ConeSearch.xsd http://www.ivoa.net/xml/VOResource/v1.0 http://vo.ari.uni-heidelberg.de/docs/schemata/VOResource.xsd http://www.ivoa.net/xml/VODataService/v1.1 http://vo.ari.uni-heidelberg.de/docs/schemata/VODataService.xsd" xsi:type="vs:CatalogService"><title>ESSENCE 6yr spectroscopic follow-up</title><shortName>J/ApJS/224/3</shortName><identifier>ivo://CDS.VizieR/J/ApJS/224/3</identifier><altIdentifier>doi:10.26093/cds/vizier.22240003</altIdentifier><curation><publisher ivo-id="ivo://CDS">CDS</publisher><creator><name>Narayan G.</name></creator><creator><name>Rest A.</name></creator><creator><name>Tucker B.E.</name></creator><creator><name>Foley R.J.</name></creator><creator><name>Wood-Vasey W.M.</name></creator><creator><name>Challis P.,Stubbs C.</name></creator><creator><name>Kirshner R.P.</name></creator><creator><name>Aguilera C.</name></creator><creator><name>Becker A.C.</name></creator><creator><name>Blondin S.,Clocchiatti A.</name></creator><creator><name>Covarrubias R.</name></creator><creator><name>Damke G.</name></creator><creator><name>Davis T.M.</name></creator><creator><name>Filippenko A.V.,Ganeshalingam M.</name></creator><creator><name>Garg A.</name></creator><creator><name>Garnavich P.M.</name></creator><creator><name>Hicken M.</name></creator><creator><name>Jha S.W.,Krisciunas K.</name></creator><creator><name>Leibundgut B.</name></creator><creator><name>Li W.</name></creator><creator><name>Matheson T.</name></creator><creator><name>Miknaitis G.</name></creator><creator><name>Pignata G.,Prieto J.L.</name></creator><creator><name>Riess A.G.</name></creator><creator><name>Schmidt B.P.</name></creator><creator><name>Silverman J.M.</name></creator><creator><name>Smith R.C.,Sollerman J.</name></creator><creator><name>Spyromilio J.</name></creator><creator><name>Suntzeff N.B.</name></creator><creator><name>Tonry J.L.</name></creator><creator><name>Zenteno A.</name></creator><date role="Updated">2025-07-18T20:15:07Z</date><date role="Created">2017-04-13T14:01:20Z</date><contact><name>CDS support team</name><address>CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France</address><email>cds-question@unistra.fr</email></contact></curation><content><subject>supernovae</subject><subject>spectroscopy</subject><subject>redshifted</subject><subject>surveys</subject><subject>interstellar-reddening</subject><description>The Equation of State: Supernovae trace Cosmic Expansion (ESSENCE) survey discovered 213 Type Ia supernovae at redshifts 0.1&lt;z&lt;0.81 between 2002 and 2008. We present their R- and I-band photometry, measured from images obtained using the MOSAIC II camera at the CTIO Blanco, along with rapid-response spectroscopy for each object. We use our spectroscopic follow-up observations to determine an accurate, quantitative classification, and precise redshift. Through an extensive calibration program we have improved the precision of the CTIO Blanco natural photometric system. We use several empirical metrics to measure our internal photometric consistency and our absolute calibration of the survey. We assess the effect of various potential sources of systematic bias on our measured fluxes, and estimate the dominant term in the systematic error budget from the photometric calibration on our absolute fluxes is ~1%.</description><source format="bibcode">2016ApJS..224....3N</source><referenceURL>https://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJS/224/3</referenceURL><type>Catalog</type><contentLevel>Research</contentLevel><relationship><relationshipType>IsServedBy</relationshipType><relatedResource ivo-id="ivo://CDS.VizieR/TAP">TAP VizieR generic service</relatedResource></relationship><relationship><relationshipType>IsServedBy</relationshipType><relatedResource>Conesearch service</relatedResource></relationship><relationship><relationshipType>related-to</relationshipType><relatedResource ivo-id="ivo://CDS.VizieR/J/ApJ/799/208">J/ApJ/799/208 : Type IIP supernovae from Pan-STARRS1 (Sanders+, 2015)</relatedResource><relatedResource ivo-id="ivo://CDS.VizieR/J/ApJ/795/44">J/ApJ/795/44 : PS1 SNe Ia (0.02&lt;z&lt;0.7) griz light curves (Rest+, 2014)</relatedResource><relatedResource ivo-id="ivo://CDS.VizieR/J/AJ/147/99">J/AJ/147/99 : Spectroscopy of 73 stripped core-collapse SNe (Modjaz+, 2014)</relatedResource><relatedResource ivo-id="ivo://CDS.VizieR/J/MNRAS/444/3258">J/MNRAS/444/3258 : Velocities and EW of PTF SNe Ia (Maguire+, 2014)</relatedResource><relatedResource ivo-id="ivo://CDS.VizieR/J/A+A/568/A22">J/A+A/568/A22 : Joint analysis of the SDSS-II and SNLS SNe Ia (Betoule+, 2014)</relatedResource><relatedResource ivo-id="ivo://CDS.VizieR/J/A+A/552/A124">J/A+A/552/A124 : SNLS &amp; SDSS SN surveys photom. calibration (Betoule+, 2013)</relatedResource><relatedResource ivo-id="ivo://CDS.VizieR/J/ApJ/773/53">J/ApJ/773/53 : Type Ia SNe spectroscopy by the CSP (Folatelli+, 2013)</relatedResource><relatedResource ivo-id="ivo://CDS.VizieR/J/MNRAS/435/1680">J/MNRAS/435/1680 : SN Ia host galaxy properties (Johansson+, 2013)</relatedResource><relatedResource ivo-id="ivo://CDS.VizieR/J/MNRAS/425/1789">J/MNRAS/425/1789 : Berkeley supernova Ia program. 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