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<ri:Resource created="2001-04-30T22:33:04Z" status="active" updated="2025-05-19T09:50:00Z" 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>Second Extreme Ultra-Violet Explorer Catalog</title><shortName>II/203A</shortName><identifier>ivo://CDS.VizieR/II/203A</identifier><curation><publisher ivo-id="ivo://CDS">CDS</publisher><creator><name>Bowyer S.</name></creator><creator><name>Lampton M.</name></creator><creator><name>Lewis J.</name></creator><creator><name>Wu X.</name></creator><creator><name>Jelinsky P.</name></creator><creator><name>Malina R.F.</name></creator><date role="Updated">2003-02-28T14:54:02Z</date><date role="Created">2001-04-30T22:33:04Z</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>x-ray-sources</subject><subject>ultraviolet-sources</subject><description>The Extreme Ultraviolet Explorer satellite was launched on June 7, 1992 from Cape Canaveral, Florida on a Delta II rocket. The payload contains three EUV scanning telescopes equipped with imaging detectors as well as a Deep Survey Spectrometer instrument which divides the light from a fourth telescope between an imaging detector and three EUV spectrometers. There are three source tables in this catalogue: - table1 lists count rates and positions of 514 objects detected during the all-sky survey. - table2 lists 35 sources detected by the deep survey of half the ecliptic plane; three deep survey objects are also detected in the all sky survey. - table3 lists 188 sources that have been detected in other ways, principally by deep exposures with the scanner telescopes as part of the Right Angle Program or by long exposures with the deep survey instrument; table3 includes right angle detections through December 24, 1994. Because the objects listed in table3 have been derived with a variety of instruments and exposure strategies, the flux limits and detection thresholds vary over a wide range; interested readers should consult the reference listed. Each table has an associated list of identified sources, id1, id2 and id3 (one EUVE source may by associated to 0, one or more counterparts); in nearly all cases they lie within 1 arcmin of the actual source position. The 534 objects in the "faint" part were detected jointly in the EUVE and in the ROSAT X-Ray Telescope 0.25keV band (50{AA}). This joint selection criterion permits use of a low count rate threshold in each survey, roughly 60% of the threshold used in the EUVE all-sky surveys, and 166 of the objects listed in the "faint" part are new EUV sources, appearing in neither the Second EUVE Source Catalog (tables 1 to 3) nor the ROSAT Wide Field Camera Second Catalog (J/MNRAS/274/1165)</description><source format="bibcode">1996ApJS..102..129B</source><referenceURL>https://cdsarc.cds.unistra.fr/viz-bin/cat/II/203A</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>IsPreviousVersionOf</relationshipType><relatedResource ivo-id="ivo://CDS.VizieR/IX/35">IX/35</relatedResource></relationship><relationship><relationshipType>IsServedBy</relationshipType><relatedResource>Conesearch service</relatedResource></relationship><relationship><relationshipType>related-to</relationshipType><relatedResource ivo-id="ivo://CDS.VizieR/J/ApJS/93/569">J/ApJS/93/569 : First EUVE source catalogue (Bowyer+, 1994)</relatedResource><relatedResource ivo-id="ivo://CDS.VizieR/J/AJ/107/751">J/AJ/107/751 : EUV Explorer bright sources list (Malina+, 1994)</relatedResource><relatedResource ivo-id="ivo://CDS.VizieR/J/MNRAS/260/77">J/MNRAS/260/77 : ROSAT Wide Field Camera EUV Bright Sources (Pounds+ 1993)</relatedResource><relatedResource ivo-id="ivo://CDS.VizieR/J/MNRAS/274/1165">J/MNRAS/274/1165 : The 2RE Source Catalogue (Pye+ 1995)</relatedResource><relatedResource>http://archive.stsci.edu/euve/ : EUVE Archive at STScI</relatedResource></relationship></content><rights>https://cds.unistra.fr/vizier-org/licences_vizier.html</rights><capability><interface xsi:type="vr:WebBrowser"><accessURL use="full">https://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=II/203A</accessURL><mirrorURL 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Should Not be used for identification.</description><ucd>meta.record</ucd><dataType xsi:type="vs:VOTableType">int</dataType></column><column><name>EUVE</name><description>Catalog designation based on J2000 position</description><ucd>meta.id;meta.main</ucd><dataType xsi:type="vs:VOTableType" arraysize="14*">char</dataType><flag>primary</flag></column><column><name>RAJ2000</name><description>Best fit Right Ascension J2000 (hours) for detected EUVE source</description><ucd>pos.eq.ra;meta.main</ucd></column><column><name>DEJ2000</name><description>Best fit Declination J2000 (degrees)</description><ucd>pos.eq.dec;meta.main</ucd></column><column><name>c100A</name><description>? 100A (10nm, 125eV) Lexan/boron band observed mean countrate</description><unit>ct/ks</unit><ucd>phot.count;em.X-ray</ucd><dataType xsi:type="vs:VOTableType">int</dataType><flag>nullable</flag></column><column><name>u_c100A</name><description>[)] indicates detections &lt; 3 sigma</description><ucd>meta.code.error</ucd><dataType xsi:type="vs:VOTableType" arraysize="1*">char</dataType></column><column><name>e_c100A</name><description>? one sigma countrate error</description><unit>ct/ks</unit><ucd>stat.error</ucd><dataType xsi:type="vs:VOTableType">int</dataType><flag>nullable</flag></column><column><name>c200A</name><description>? 200A (20nm, 60eV) aluminium/carbon band observed mean countrate</description><unit>ct/ks</unit><ucd>phot.count;em.X-ray</ucd><dataType xsi:type="vs:VOTableType">int</dataType><flag>nullable</flag></column><column><name>u_c200A</name><description>[)] indicates detections &lt; 3 sigma</description><ucd>meta.code.error</ucd><dataType xsi:type="vs:VOTableType" arraysize="1*">char</dataType></column><column><name>e_c200A</name><description>? one sigma countrate error</description><unit>ct/ks</unit><ucd>stat.error</ucd><dataType xsi:type="vs:VOTableType">int</dataType><flag>nullable</flag></column><column><name>c400A</name><description>? 400A (40nm, 30eV) multicomponent-filter band observed mean countrate</description><unit>ct/ks</unit><ucd>phot.count;em.X-ray</ucd><dataType xsi:type="vs:VOTableType">int</dataType><flag>nullable</flag></column><column><name>u_c400A</name><description>[)] indicates detections &lt; 3 sigma</description><ucd>meta.code.error</ucd><dataType xsi:type="vs:VOTableType" arraysize="1*">char</dataType></column><column><name>e_c400A</name><description>? one sigma countrate error</description><unit>ct/ks</unit><ucd>stat.error</ucd><dataType xsi:type="vs:VOTableType">int</dataType><flag>nullable</flag></column><column><name>c600A</name><description>? 600A (60nm, 20eV) tin (Sn) band observed mean countrate</description><unit>ct/ks</unit><ucd>phot.count;em.X-ray</ucd><dataType xsi:type="vs:VOTableType">int</dataType><flag>nullable</flag></column><column><name>u_c600A</name><description>[)] indicates detections &lt; 3 sigma</description><ucd>meta.code.error</ucd><dataType xsi:type="vs:VOTableType" arraysize="1*">char</dataType></column><column><name>e_c600A</name><description>? one sigma countrate error</description><unit>ct/ks</unit><ucd>stat.error</ucd><dataType xsi:type="vs:VOTableType">int</dataType><flag>nullable</flag></column></table><table><name>II/203A/table2</name><description>Deep Survey of half the ecliptic plane</description><column><name>recno</name><description>Record number assigned by the VizieR team. Should Not be used for identification.</description><ucd>meta.record</ucd><dataType xsi:type="vs:VOTableType">int</dataType></column><column><name>EUVE</name><description>Catalog designation based on J2000 position</description><ucd>meta.id;meta.main</ucd><dataType xsi:type="vs:VOTableType" arraysize="14*">char</dataType><flag>primary</flag></column><column><name>RAJ2000</name><description>Best fit Right Ascension J2000 (hours) for detected EUVE source</description><ucd>pos.eq.ra;meta.main</ucd></column><column><name>DEJ2000</name><description>Best fit Declination J2000 (degrees)</description><ucd>pos.eq.dec;meta.main</ucd></column><column><name>c100A</name><description>? 100A (10nm, 125eV) Lexan/boron band observed mean countrate</description><unit>ct/ks</unit><ucd>phot.count;em.X-ray</ucd><dataType xsi:type="vs:VOTableType">float</dataType><flag>nullable</flag></column><column><name>u_c100A</name><description>[)] ')' indicates detections &lt; 3 sigma</description><ucd>meta.code.error</ucd><dataType xsi:type="vs:VOTableType" arraysize="1*">char</dataType></column><column><name>e_c100A</name><description>? one sigma countrate error</description><unit>ct/ks</unit><ucd>stat.error</ucd><dataType xsi:type="vs:VOTableType">float</dataType><flag>nullable</flag></column><column><name>c200A</name><description>? 200A (20nm, 60eV) aluminium/carbon band observed mean countrate</description><unit>ct/ks</unit><ucd>phot.count;em.X-ray</ucd><dataType xsi:type="vs:VOTableType">float</dataType><flag>nullable</flag></column><column><name>u_c200A</name><description>[)] ')' indicates detections &lt; 3 sigma</description><ucd>meta.code.error</ucd><dataType xsi:type="vs:VOTableType" arraysize="1*">char</dataType></column><column><name>e_c200A</name><description>? one sigma countrate error</description><unit>ct/ks</unit><ucd>stat.error</ucd><dataType xsi:type="vs:VOTableType">float</dataType><flag>nullable</flag></column></table><table><name>II/203A/table3</name><description>Sources detected in other ways</description><column><name>recno</name><description>Record number assigned by the VizieR team. Should Not be used for identification.</description><ucd>meta.record</ucd><dataType xsi:type="vs:VOTableType">int</dataType></column><column><name>EUVE</name><description>Catalog designation based on J2000 position</description><ucd>meta.id;meta.main</ucd><dataType xsi:type="vs:VOTableType" arraysize="14*">char</dataType><flag>primary</flag></column><column><name>RAJ2000</name><description>Best fit Right Ascension J2000 (hours) for detected EUVE source</description><ucd>pos.eq.ra;meta.main</ucd></column><column><name>DEJ2000</name><description>Best fit Declination J2000 (degrees)</description><ucd>pos.eq.dec;meta.main</ucd></column><column><name>c100A</name><description>? 100A (10nm, 125eV) Lexan/boron band observed mean countrate</description><unit>ct/ks</unit><ucd>phot.count;em.X-ray</ucd><dataType xsi:type="vs:VOTableType">float</dataType><flag>nullable</flag></column><column><name>n_c100A</name><description>[U] indicates possible UV leak</description><ucd>meta.note</ucd><dataType xsi:type="vs:VOTableType" arraysize="1*">char</dataType></column><column><name>c200A</name><description>? 200A (20nm, 60eV) aluminium/carbon band observed mean countrate</description><unit>ct/ks</unit><ucd>phot.count;em.X-ray</ucd><dataType xsi:type="vs:VOTableType">float</dataType><flag>nullable</flag></column><column><name>u_c200A</name><description>[U] indicates possible UV leak</description><ucd>meta.code.error</ucd><dataType xsi:type="vs:VOTableType" arraysize="1*">char</dataType></column><column><name>c400A</name><description>? 400A (40nm, 30eV) multicomponent-filter band observed mean countrate</description><unit>ct/ks</unit><ucd>phot.count;em.X-ray</ucd><dataType xsi:type="vs:VOTableType">float</dataType><flag>nullable</flag></column><column><name>n_c400A</name><description>[U] indicates possible UV leak</description><ucd>meta.note</ucd><dataType xsi:type="vs:VOTableType" arraysize="1*">char</dataType></column><column><name>c600A</name><description>? 600A (60nm, 20eV) tin (Sn) band observed mean countrate</description><unit>ct/ks</unit><ucd>phot.count;em.X-ray</ucd><dataType xsi:type="vs:VOTableType">float</dataType><flag>nullable</flag></column><column><name>n_c600A</name><description>[U] indicates possible UV leak</description><ucd>meta.note</ucd><dataType xsi:type="vs:VOTableType" arraysize="1*">char</dataType></column><column><name>c100DS</name><description>? DS100A (10nm, 125eV) Lexan/boron band observed mean countrate</description><unit>ct/ks</unit><ucd>phot.count;em.X-ray</ucd><dataType xsi:type="vs:VOTableType">float</dataType><flag>nullable</flag></column><column><name>n_c100DS</name><description>[U] indicates possible UV leak</description><ucd>meta.note</ucd><dataType xsi:type="vs:VOTableType" arraysize="1*">char</dataType></column><column><name>c200DS</name><description>? DS200A (20nm, 60eV) aluminium/carbon band observed mean countrate</description><unit>ct/ks</unit><ucd>phot.count;em.X-ray</ucd><dataType xsi:type="vs:VOTableType">float</dataType><flag>nullable</flag></column><column><name>n_c200DS</name><description>[U] indicates possible UV leak</description><ucd>meta.note</ucd><dataType xsi:type="vs:VOTableType" arraysize="1*">char</dataType></column></table><table><name>II/203A/id1</name><description>Identifications of table1</description><column><name>Name2</name><description>ID name 2</description><ucd>meta.id</ucd><dataType xsi:type="vs:VOTableType" arraysize="17*">char</dataType></column><column><name>Name1</name><description>ID name 1</description><ucd>meta.id</ucd><dataType xsi:type="vs:VOTableType" arraysize="17*">char</dataType></column><column><name>recno</name><description>Record number assigned by the VizieR team. Should Not be used for identification.</description><ucd>meta.record</ucd><dataType xsi:type="vs:VOTableType">int</dataType></column><column><name>EUVE</name><description>Catalog designation based on J2000 position</description><ucd>meta.id;meta.main</ucd><dataType xsi:type="vs:VOTableType" arraysize="14*">char</dataType></column><column><name>Q</name><description>[12UH] Identification characterisation (1)</description><ucd>meta.note</ucd><dataType xsi:type="vs:VOTableType" arraysize="1*">char</dataType></column><column><name>Type</name><description>ID spectral type or description</description><ucd>src.spType</ucd><dataType xsi:type="vs:VOTableType" arraysize="11*">char</dataType></column><column><name>MAG</name><description>? magnitude of ID object</description><unit>mag</unit><ucd>phot.mag;em.opt.V</ucd><dataType xsi:type="vs:VOTableType">float</dataType><flag>nullable</flag></column><column><name>Sep</name><description>? angle separating EUVE &amp; ID in arcsec</description><unit>arcsec</unit><ucd>pos.angDistance</ucd><dataType xsi:type="vs:VOTableType">int</dataType><flag>nullable</flag></column><column><name>Comments</name><description>See note (2)</description><ucd>meta.note</ucd><dataType xsi:type="vs:VOTableType" arraysize="16*">char</dataType></column></table><table><name>II/203A/id3</name><description>Identifications of table3</description><column><name>recno</name><description>Record number assigned by the VizieR team. Should Not be used for identification.</description><ucd>meta.record</ucd><dataType xsi:type="vs:VOTableType">int</dataType></column><column><name>EUVE</name><description>Catalog designation based on J2000 position</description><ucd>meta.id;meta.main</ucd><dataType xsi:type="vs:VOTableType" arraysize="14*">char</dataType></column><column><name>Q</name><description>[12UH] Identification characterisation (1)</description><ucd>meta.note</ucd><dataType xsi:type="vs:VOTableType" arraysize="1*">char</dataType></column><column><name>Name1</name><description>ID name 1</description><ucd>meta.id</ucd><dataType xsi:type="vs:VOTableType" arraysize="17*">char</dataType></column><column><name>Name2</name><description>ID name 2</description><ucd>meta.id</ucd><dataType xsi:type="vs:VOTableType" arraysize="17*">char</dataType></column><column><name>Type</name><description>ID spectral type or description</description><ucd>src.spType</ucd><dataType xsi:type="vs:VOTableType" arraysize="11*">char</dataType></column><column><name>MAG</name><description>? magnitude of ID object</description><unit>mag</unit><ucd>phot.mag;em.opt.V</ucd><dataType xsi:type="vs:VOTableType">float</dataType><flag>nullable</flag></column><column><name>Sep</name><description>? angle separating EUVE &amp; ID in arcsec</description><unit>arcsec</unit><ucd>pos.angDistance</ucd><dataType xsi:type="vs:VOTableType">int</dataType><flag>nullable</flag></column><column><name>Comments</name><description>See note (2)</description><ucd>meta.note</ucd><dataType xsi:type="vs:VOTableType" arraysize="16*">char</dataType></column></table><table><name>II/203A/faint</name><description>Faint sources detected jointly in EUVE and ROSAT WF (table 1 of Lampton et al., 1997ApJS..108..545L)</description><column><name>recno</name><description>Record number assigned by the VizieR team. Should Not be used for identification.</description><ucd>meta.record</ucd><dataType xsi:type="vs:VOTableType">int</dataType></column><column><name>EUVE</name><description>EUVE name</description><ucd>meta.id;meta.main</ucd><dataType xsi:type="vs:VOTableType" arraysize="14*">char</dataType></column><column><name>f_EUVE</name><description>[*] indicates a name which differs from 2EUVE (1)</description><ucd>meta.code.error</ucd><dataType xsi:type="vs:VOTableType" arraysize="1*">char</dataType></column><column><name>RAJ2000</name><description>Right Ascension J2000 (hours) of X-ray centroid</description><ucd>pos.eq.ra;meta.main</ucd></column><column><name>DEJ2000</name><description>Declination J2000 (degrees) of X-ray centroid</description><ucd>pos.eq.dec;meta.main</ucd></column><column><name>EUVct</name><description>EUVE (100{AA}, 125eV) count rate</description><unit>ct/s</unit><ucd>phot.count;em.X-ray</ucd><dataType xsi:type="vs:VOTableType">float</dataType></column><column><name>XRT</name><description>X-ray (50{AA}, 250eV) ROSAT WFC count rate</description><unit>ct/s</unit><ucd>phot.count;em.X-ray</ucd><dataType xsi:type="vs:VOTableType">float</dataType></column><column><name>Sep</name><description>separation between EUVE and X-ray positions</description><unit>arcmin</unit><ucd>pos.angDistance</ucd><dataType xsi:type="vs:VOTableType">float</dataType></column><column><name>ID</name><description>Designation of source</description><ucd>meta.id.cross</ucd><dataType xsi:type="vs:VOTableType" arraysize="16*">char</dataType></column><column><name>Simbad</name><description>ask the SIMBAD data-base about this object</description><ucd>meta.ref</ucd><dataType xsi:type="vs:VOTableType" arraysize="*">char</dataType></column><column><name>n_EUVE</name><description>[UN2W, ] EUV Status (2)</description><ucd>meta.note</ucd><dataType xsi:type="vs:VOTableType" arraysize="3*">char</dataType></column></table></schema></tableset></ri:Resource>