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<ri:Resource created="2000-03-26T09:25:36Z" 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>RGB sample of BL Lacertae objects</title><shortName>J/ApJ/525/127</shortName><identifier>ivo://CDS.VizieR/J/ApJ/525/127</identifier><altIdentifier>doi:10.26093/cds/vizier.15250127</altIdentifier><curation><publisher ivo-id="ivo://CDS">CDS</publisher><creator><name>Laurent-Muehleisen S.A.</name></creator><creator><name>Kollgaard R.I.</name></creator><creator><name>Feigelson E.D.</name></creator><creator><name>Brinkmann W.,Siebert J.</name></creator><date role="Updated">2000-03-26T09:26:03Z</date><date role="Created">2000-03-26T09:25:36Z</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>bl-lacertae-objects</subject><subject>radio-galaxies</subject><subject>surveys</subject><subject>x-ray-sources</subject><description>Combining newly identified and previously known BL Lacertae objects from the ROSAT All-Sky Survey-Green Bank (RGB) catalog, we present a sample of 127 BL Lacertae objects, the largest ever derived from a single uniform survey. A complete sample of 33 objects brighter than O=18.0 mag is also presented. These samples are compared to other known BL Lac samples and are generally found to exhibit properties intermediate between those of the previously disparate classes of high- and low-energy-peaked BL Lacertae objects (HBLs and LBLs, respectively). This result is most dramatic in the distribution of the X-ray to radio logarithmic flux ratios, where the RGB BL Lacertae objects are shown to peak precisely where the sharp dichotomy between the two subclasses was previously seen.</description><source format="bibcode">1999ApJ...525..127L</source><referenceURL>https://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/525/127</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></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/ApJ/525/127</accessURL><mirrorURL title="VizieR at IUCAA: Pune, India">https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/525/127</mirrorURL><mirrorURL title="VizieR at SAAO: SAAO, South Africa">http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/525/127</mirrorURL></interface></capability><capability><interface xsi:type="vs:ParamHTTP"><accessURL use="base">https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/525/127</accessURL><mirrorURL title="VizieR at IUCAA: Pune, India">https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/525/127</mirrorURL><mirrorURL title="VizieR at SAAO: SAAO, South Africa">http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/525/127</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><capability xsi:type="cs:ConeSearch" standardID="ivo://ivoa.net/std/ConeSearch"><description>Cone search capability for table J/ApJ/525/127/table2 (RGB BL Lac Source Properties)</description><interface xsi:type="vs:ParamHTTP" role="std"><accessURL use="base">https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/525/127/table2?</accessURL><mirrorURL title="VizieR at IUCAA: Pune, India">https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/525/127/table2?</mirrorURL><mirrorURL title="VizieR at SAAO: SAAO, South Africa">http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/525/127/table2?</mirrorURL><queryType>GET</queryType><resultType>text/xml+votable</resultType></interface><maxSR>180.0</maxSR><maxRecords>50000</maxRecords><verbosity>true</verbosity><testQuery><ra>1.999875</ra><dec>47.2021667</dec><sr>0.005555555555555556</sr></testQuery></capability><coverage><spatial>6/100 250 447 790 1466 2094 2273 2295 2549 2650 2708 2792 3023 3431 3710 4475 4695 4863 4964 5423 5483 5673 5723 5918 6015 6018 6021 6038 6067 6647 6764 6996 7038 7176 7235 7265 7518 7548 7570 7576 7699 7896 7989 8374 8487 8556 8915 8945 9049 9060 9196 9383 9445 9453 9464 9554 9566 9612 9615 9681 9684 9711 9762 9773 9991 10071 10198 10422 10572 10605 10656 10715 10921 11212 11321 11374 11429 11430 11449 11639 11649 11682 11736 11936 13586 13705 13927 14955 15027 15037 15059 15269 15286 15311 15495 16059 17775 17843 18259 19190 19789 19831 20020 20141 21972 22363 23011 23127 23134 23222 24027 27722 28138 28139 28454 28492 28517 28542 31389 31472 31663 32261 32311 32345 32621</spatial><footprint ivo-id="ivo://ivoa.net/std/moc">https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/525/127?format=ascii</footprint><waveband>X-ray</waveband><waveband>Radio</waveband></coverage><tableset><schema><name>default</name><table><name>J/ApJ/525/127/table2</name><description>RGB BL Lac Source Properties</description><column><name>f_Name</name><description>[bc ] Flag on Name (1)</description><dataType xsi:type="vs:VOTableType" arraysize="2*">char</dataType></column><column><name>recno</name><description>Record number assigned by the VizieR team. Should Not be used for identification.</description><dataType xsi:type="vs:VOTableType">int</dataType></column><column><name>Name</name><description>Object ROSAT-Green Bank Survey name</description><dataType xsi:type="vs:VOTableType" arraysize="14*">char</dataType></column><column><name>Sample</name><description>[S] Indicates part of the sample but not a definitive BL Lac object</description><dataType xsi:type="vs:VOTableType" arraysize="1*">char</dataType></column><column><name>OName</name><description>Other name</description><dataType xsi:type="vs:VOTableType" arraysize="18*">char</dataType></column><column><name>RAJ2000</name><description>Right ascension (J2000)</description></column><column><name>DEJ2000</name><description>Declination (J2000)</description></column><column><name>l_SCore</name><description>Limit on SCore</description><dataType xsi:type="vs:VOTableType" arraysize="1*">char</dataType></column><column><name>SCore</name><description>5Ghz radio flux of the core</description><unit>mJy</unit><dataType xsi:type="vs:VOTableType">int</dataType></column><column><name>XFlux</name><description>X-ray flux in the ROSAT 0.1-2.4 keV band (in units of 10^-12^ ergs/cm^2^/s)</description><unit>1e-12mW.m**-2</unit><dataType xsi:type="vs:VOTableType">float</dataType></column><column><name>Omag</name><description>Optical magnitude from the Palomar Observatory Sky Survey I</description><unit>mag</unit><dataType xsi:type="vs:VOTableType">float</dataType></column><column><name>f_Omag</name><description>[ad] Flag on the optical magnitudes (2)</description><dataType xsi:type="vs:VOTableType" arraysize="2*">char</dataType></column><column><name>Sp-Index</name><description>? X-ray spectral energy index</description><dataType xsi:type="vs:VOTableType">float</dataType><flag>nullable</flag></column><column><name>l_Sp-Index</name><description>Limit on Sp-Index</description><dataType xsi:type="vs:VOTableType" arraysize="1*">char</dataType></column><column><name>Sp-IndexRO</name><description>Radio - Optical spectral index</description><dataType xsi:type="vs:VOTableType">float</dataType></column><column><name>Sp-IndexXO</name><description>Optical - X-ray spectral index</description><dataType xsi:type="vs:VOTableType">float</dataType></column><column><name>l_z</name><description>Limit on z</description><dataType xsi:type="vs:VOTableType" arraysize="1*">char</dataType></column><column><name>z</name><description>? Redshift</description><dataType xsi:type="vs:VOTableType">float</dataType><flag>nullable</flag></column><column><name>n_z</name><description>[ef] Notes on z (3)</description><dataType xsi:type="vs:VOTableType" arraysize="1*">char</dataType></column><column><name>u_z</name><description>[?] Indicates an uncertain redshift measurement</description><dataType xsi:type="vs:VOTableType" arraysize="1*">char</dataType></column><column><name>r_Name</name><description>Reference numbers to the data in table (see refs.dat)</description><dataType xsi:type="vs:VOTableType" arraysize="18*">char</dataType></column></table><table><name>J/ApJ/525/127/refs</name><description>References to table2.dat</description><column><name>recno</name><description>Record number assigned by the VizieR team. 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