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<ri:Resource created="1997-12-09T17:43:09Z" status="active" updated="2025-05-19T09:50:00Z" version="1.2" 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/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>X-ray flare of CF Tuc (=HD 5303)</title><shortName>J/A+A/311/211</shortName><identifier>ivo://CDS.VizieR/J/A+A/311/211</identifier><altIdentifier>doi:10.26093/cds/vizier.33110211</altIdentifier><curation><publisher ivo-id="ivo://CDS">CDS</publisher><creator><name>Kuerster M.</name></creator><creator><name>Schmitt J.H.M.M.</name></creator><date role="Updated">1997-12-09T16:43:12Z</date><date role="Created">1997-12-09T17:43:09Z</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>stellar-flares</subject><description>Solar abundance fits to the quiescent spectra 1-3 and 20-35 were made with a two-component thermal plasma (model 1a) whereas sub-solar abundance fits to the quiescent spectra were made with a one-component thermal plasma (model 2a). Modifications of these models were used for the flare spectra 4-19 in order to account for the `quiescent background'. Thus solar abundance fits to the flare spectra were made with a thermal plasma of two variable components plus two components kept constant at the average quiescent values T_qu,cool=2.46*10^6K, EM_qu,cool=0.49*10^53cm^-3, T_qu,hot =17.8*10^6K, EM_qu,hot=1.95*10^53cm^-3, and z=1.00 (model 1b). Sub-solar abundance fits to the flare spectra were made with a plasma of one variable component plus one component kept constant at the average quiescent values T_qu=13.0*10^6K, EM_qu=5.20*10^53cm^-3, and z=0.10 (model 2b). In both cases the mean values of spectra 3, and 20-35 were used to account for the quiescent emission.</description><source format="bibcode">1996A&amp;A...311..211K</source><referenceURL>https://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/311/211</referenceURL><type>Catalog</type><contentLevel>Research</contentLevel><relationship><relationshipType>IsServedBy</relationshipType><relatedResource ivo-id="ivo://CDS.VizieR/TAP">TAP VizieR generic service</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=J/A+A/311/211</accessURL><mirrorURL title="VizieR at IUCAA: Pune, India">https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/311/211</mirrorURL><mirrorURL title="VizieR at SAAO: SAAO, South Africa">http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/311/211</mirrorURL></interface></capability><capability><interface xsi:type="vs:ParamHTTP"><accessURL use="base">https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/311/211</accessURL><mirrorURL title="VizieR at IUCAA: Pune, India">https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/311/211</mirrorURL><mirrorURL title="VizieR at SAAO: SAAO, South Africa">http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/311/211</mirrorURL><queryType>GET</queryType><resultType>text/xml+votable</resultType></interface></capability><capability standardID="ivo://ivoa.net/std/TAP#aux"><interface xsi:type="vs:ParamHTTP" role="std"><accessURL use="base">https://tapvizier.cds.unistra.fr/TAPVizieR/tap</accessURL></interface></capability><coverage><footprint ivo-id="ivo://ivoa.net/std/moc"/><waveband>Optical</waveband></coverage><tableset><schema><name>default</name><table><name>J/A+A/311/211/table2</name><description>Raymond-Smith model fits with solar and sub-solar metal abundances, z=1.0 and z=0.1.</description><column><name>T</name><description>Temperature, model 2 (3)</description><unit>1e+06K</unit><ucd>phys.temperature</ucd><dataType xsi:type="vs:VOTableType">float</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>Sq</name><description>Number of the spectrum</description><ucd>meta.id;meta.main</ucd><dataType xsi:type="vs:VOTableType">int</dataType></column><column><name>State</name><description>Emission state as inferred from the light curve (1)</description><ucd>meta.code</ucd><dataType xsi:type="vs:VOTableType" arraysize="4*">char</dataType></column><column><name>HJD</name><description>Heliocentric Julian day</description><unit>d</unit><ucd>time.epoch</ucd><dataType xsi:type="vs:VOTableType">double</dataType></column><column><name>NH1</name><description>Hydrogen column density, model 1 (2)</description><unit>1e+19cm**-2</unit><ucd>phys.columnDensity</ucd><dataType xsi:type="vs:VOTableType">float</dataType></column><column><name>e(NH1)u</name><description>Error in NH1, upper limit</description><unit>1e+19cm**-2</unit><ucd>stat.error</ucd><dataType xsi:type="vs:VOTableType">float</dataType></column><column><name>e(NH1)l</name><description>Error in NH1, lower limit</description><unit>1e+19cm**-2</unit><ucd>stat.error</ucd><dataType xsi:type="vs:VOTableType">float</dataType></column><column><name>EMcool</name><description>Emission measure of the cooler plasma component, model 1 (2)</description><unit>1e+53cm**-3</unit><ucd>phys.emissMeasure</ucd><dataType xsi:type="vs:VOTableType">float</dataType></column><column><name>e(EMcool)u</name><description>Error in EMcool, upper limit</description><unit>1e+53cm**-3</unit><ucd>stat.error</ucd><dataType xsi:type="vs:VOTableType">float</dataType></column><column><name>e(EMcool)l</name><description>Error in EMcool, lower limit</description><unit>1e+53cm**-3</unit><ucd>stat.error</ucd><dataType xsi:type="vs:VOTableType">float</dataType></column><column><name>Tcool</name><description>temperature of the cooler plasma component, model 1 (2)</description><unit>1e+06K</unit><ucd>phys.temperature</ucd><dataType xsi:type="vs:VOTableType">float</dataType></column><column><name>e(Tcool)u</name><description>Error in Tcool, upper limit</description><unit>1e+06K</unit><ucd>stat.error</ucd><dataType xsi:type="vs:VOTableType">float</dataType></column><column><name>e(Tcool)l</name><description>Error in Tcool, lower limit</description><unit>1e+06K</unit><ucd>stat.error</ucd><dataType xsi:type="vs:VOTableType">float</dataType></column><column><name>EMhot</name><description>Emission measure of the hotter plasma component, model 1 (2)</description><unit>1e+53cm**-3</unit><ucd>phys.emissMeasure</ucd><dataType xsi:type="vs:VOTableType">float</dataType></column><column><name>e(EMhot)u</name><description>Error in EMhot, upper limit</description><unit>1e+53cm**-3</unit><ucd>stat.error</ucd><dataType xsi:type="vs:VOTableType">float</dataType></column><column><name>e(EMhot)l</name><description>Error in EMhot, lower limit</description><unit>1e+53cm**-3</unit><ucd>stat.error</ucd><dataType xsi:type="vs:VOTableType">float</dataType></column><column><name>Thot</name><description>Temperature of the hotter plasma component, model 1 (2)</description><unit>1e+06K</unit><ucd>phys.temperature</ucd><dataType xsi:type="vs:VOTableType">float</dataType></column><column><name>e(Thot)u</name><description>Error in Thot, upper limit</description><unit>1e+06K</unit><ucd>stat.error</ucd><dataType xsi:type="vs:VOTableType">float</dataType></column><column><name>e(Thot)l</name><description>Error in Thot, lower limit</description><unit>1e+06K</unit><ucd>stat.error</ucd><dataType xsi:type="vs:VOTableType">float</dataType></column><column><name>Chi21</name><description>Reduced chi-square of the fit, model 1 (2)</description><ucd>stat.fit.param</ucd><dataType xsi:type="vs:VOTableType">float</dataType></column><column><name>f_Chi21</name><description>Number of degrees of freedom of chi2</description><ucd>meta.code.error</ucd><dataType xsi:type="vs:VOTableType">int</dataType></column><column><name>NH2</name><description>Hydrogen column density, model 2 (3)</description><unit>1e+19cm**-2</unit><ucd>phys.columnDensity</ucd><dataType xsi:type="vs:VOTableType">float</dataType></column><column><name>e(NH2)u</name><description>Error in NH2, upper limit</description><unit>1e+19cm**-3</unit><ucd>stat.error</ucd><dataType xsi:type="vs:VOTableType">float</dataType></column><column><name>e(NH2)l</name><description>Error in NH2, lower limit</description><unit>1e+19cm**-3</unit><ucd>stat.error</ucd><dataType xsi:type="vs:VOTableType">float</dataType></column><column><name>EM</name><description>Emission measure, model 2 (3)</description><unit>1e+53cm**-3</unit><ucd>phys.emissMeasure</ucd><dataType xsi:type="vs:VOTableType">float</dataType></column><column><name>e(EM)u</name><description>Error in EM, upper limit</description><unit>1e+53cm**-3</unit><ucd>stat.error</ucd><dataType xsi:type="vs:VOTableType">float</dataType></column><column><name>e(EM)l</name><description>Error in EM, lower limit</description><unit>1e+53cm**-3</unit><ucd>stat.error</ucd><dataType xsi:type="vs:VOTableType">float</dataType></column><column><name>e(T)u</name><description>Error in T, upper limit</description><unit>1e+06K</unit><ucd>stat.error</ucd><dataType xsi:type="vs:VOTableType">float</dataType></column><column><name>e(T)l</name><description>Error in T, lower limit</description><unit>1e+06K</unit><ucd>stat.error</ucd><dataType xsi:type="vs:VOTableType">float</dataType></column><column><name>Chi22</name><description>Reduced chi-square of the fit, model 2 (3)</description><ucd>stat.fit.param</ucd><dataType xsi:type="vs:VOTableType">float</dataType></column><column><name>f_Chi22</name><description>Number of degrees of freedom</description><ucd>meta.code.error</ucd><dataType xsi:type="vs:VOTableType">int</dataType></column></table></schema></tableset></ri:Resource>