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<ri:Resource created="2023-03-02T09:03:20Z" 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>The WISSH quasars project. XI.</title><shortName>J/A+A/671/A34</shortName><identifier>ivo://CDS.VizieR/J/A+A/671/A34</identifier><altIdentifier>doi:10.26093/cds/vizier.36710034</altIdentifier><curation><publisher ivo-id="ivo://CDS">CDS</publisher><creator><name>Saccheo I.</name></creator><creator><name>Bongiorno A.</name></creator><creator><name>Piconcelli E.</name></creator><creator><name>Testa V.</name></creator><creator><name>Bischetti M.</name></creator><creator><name>Bisogni S.,Bruni G.</name></creator><creator><name>Cresci G.</name></creator><creator><name>Feruglio C.</name></creator><creator><name>Fiore F.</name></creator><creator><name>Grazian A.</name></creator><creator><name>Luminari A.,Lusso E.</name></creator><creator><name>Mainieri V.</name></creator><creator><name>Maiolino R.</name></creator><creator><name>Marconi A.</name></creator><creator><name>Ricci F.</name></creator><creator><name>Tombesi F.,Travascio A.</name></creator><creator><name>Vietri G.</name></creator><creator><name>Vignali C.</name></creator><creator><name>Zappacosta L.</name></creator><creator><name>La Franca F.</name></creator><date role="Updated">2023-08-25T10:46:54Z</date><date role="Created">2023-03-02T09:03:20Z</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>quasars</subject><subject>visible-astronomy</subject><subject>sloan-photometry</subject><subject>infrared-photometry</subject><subject>radio-sources</subject><subject>x-ray-sources</subject><description>Hyper-luminous Quasi-Stellar Objects (QSOs) represent the ideal laboratory to investigate Active Galactic Nuclei (AGN) feedback mechanism since their formidable energy release causes powerful winds at all scales and thus the maximum feedback is expected. We aim at deriving the mean Spectral Energy Distribution (SED) of a sample of 85 WISE-SDSS Selected Hyper-luminous (WISSH) quasars. Since the SED provides a direct way to investigate the AGN structure, our goal is to understand if quasars at the bright end of the luminosity function have peculiar properties compared to the bulk of the population. We built a mean intrinsic SED after correcting for the dust extinction, absorption and emission lines and intergalactic medium absorption. We also derived bolometric, IR band and monochromatic luminosities together with bolometric corrections at lambda=5100{AA} and 3 micron. We define a new relation for the 3 micron bolometric correction. We find that the mean SED of hyper-luminous WISSH QSOs is different from that of less luminous sources, i.e. a relatively lower X-ray emission and a near and mid IR excess which can be explained assuming a larger dust contribution. WISSH QSOs have stronger emission from both warm and very hot dust, the latter being responsible for shifting the typical dip of the AGN SED from 1.3 to 1.1 micron. We also derived the mean SEDs of two sub-samples created according to the presence of Broad Absorption Lines and equivalent width of CIV line. We confirm that BALs are X-ray weak and that they have a reddened UV-optical continuum. We also find that BALs tend to have stronger emission from the hot dust component. This analysis suggests that hyper-luminous QSOs have a peculiar SED compared to less luminous objects. It is therefore critical to use SED templates constructed exclusively from very bright quasars samples when dealing with particularly luminous sources.</description><source format="bibcode">2023A&amp;A...671A..34S</source><referenceURL>https://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/671/A34</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>related-to</relationshipType><relatedResource ivo-id="ivo://CDS.VizieR/J/A+A/635/A157">J/A+A/635/A157 : QSO J1538+0855 MUSE datacube (Travascio+, 2020)</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/671/A34</accessURL><mirrorURL title="VizieR at IUCAA: Pune, India">https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/671/A34</mirrorURL><mirrorURL title="VizieR at SAAO: SAAO, South Africa">http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/671/A34</mirrorURL></interface></capability><capability><interface xsi:type="vs:ParamHTTP"><accessURL use="base">https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/671/A34</accessURL><mirrorURL title="VizieR at IUCAA: Pune, India">https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/671/A34</mirrorURL><mirrorURL title="VizieR at SAAO: SAAO, South Africa">http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/671/A34</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><spectral>3.2031150387835462e-22 6.090060298487514e-19</spectral><footprint ivo-id="ivo://ivoa.net/std/moc"/><waveband>X-ray</waveband><waveband>Optical</waveband><waveband>Infrared</waveband><waveband>Radio</waveband></coverage><tableset><schema><name>default</name><table><name>J/A+A/671/A34/table2</name><description>Photometric data of the WISSH sample</description><column><name>W1mag</name><description>WISE W1-band (3.4um) magnitude</description><unit>mag</unit><ucd>phot.mag;em.IR.3-4um</ucd><dataType xsi:type="vs:VOTableType">float</dataType></column><column><name>e_W1mag</name><description>rms uncertainty on W1-band magnitude</description><unit>mag</unit><ucd>stat.error;phot.mag</ucd><dataType xsi:type="vs:VOTableType">float</dataType></column><column><name>W2mag</name><description>WISE W2-band (4.6um) magnitude</description><unit>mag</unit><ucd>phot.mag;em.IR.4-8um</ucd><dataType xsi:type="vs:VOTableType">float</dataType></column><column><name>e_W2mag</name><description>rms uncertainty on W2-band magnitude</description><unit>mag</unit><ucd>stat.error;phot.mag</ucd><dataType xsi:type="vs:VOTableType">float</dataType></column><column><name>W3mag</name><description>WISE W3-band (12um) magnitude</description><unit>mag</unit><ucd>phot.flux.density;em.IR.8-15um</ucd><dataType xsi:type="vs:VOTableType">float</dataType></column><column><name>e_W3mag</name><description>rms uncertainty on W3-band magnitude</description><unit>mag</unit><ucd>stat.error;phot.mag</ucd><dataType xsi:type="vs:VOTableType">double</dataType></column><column><name>W4mag</name><description>WISE W4-band (22um) magnitude</description><unit>mag</unit><ucd>phot.flux.density;em.IR.15-30um</ucd><dataType xsi:type="vs:VOTableType">float</dataType></column><column><name>e_W4mag</name><description>rms uncertainty on W4-band magnitude</description><unit>mag</unit><ucd>stat.error;phot.mag</ucd><dataType xsi:type="vs:VOTableType">double</dataType></column><column><name>S250</name><description>? Herschel/SPIRE 250um-band magnitude</description><unit>mag</unit><ucd>phot.flux.density;em.mm.750-1500GHz</ucd><dataType xsi:type="vs:VOTableType">float</dataType><flag>nullable</flag></column><column><name>e_S250</name><description>? rms uncertainty on 250um-band magnitude</description><unit>mag</unit><ucd>stat.error</ucd><dataType xsi:type="vs:VOTableType">float</dataType><flag>nullable</flag></column><column><name>S350</name><description>? Herschel/SPIRE 350um-band magnitude</description><unit>mag</unit><ucd>phot.flux.density;em.mm.750-1500GHz</ucd><dataType xsi:type="vs:VOTableType">float</dataType><flag>nullable</flag></column><column><name>e_S350</name><description>? rms uncertainty on 350um-band magnitude</description><unit>mag</unit><ucd>stat.error</ucd><dataType xsi:type="vs:VOTableType">float</dataType><flag>nullable</flag></column><column><name>S500</name><description>? Herschel/SPIRE 500um-band magnitude</description><unit>mag</unit><ucd>phot.flux.density;em.mm.400-750GHz</ucd><dataType xsi:type="vs:VOTableType">float</dataType><flag>nullable</flag></column><column><name>e_S500</name><description>? rms uncertainty on 500um-band magnitude</description><unit>mag</unit><ucd>stat.error</ucd><dataType xsi:type="vs:VOTableType">float</dataType><flag>nullable</flag></column><column><name>BandJVLA</name><description>? JVLA observed continuum frequency</description><unit>GHz</unit><ucd>em.freq;spect.continuum</ucd><dataType xsi:type="vs:VOTableType">float</dataType><flag>nullable</flag></column><column><name>FJVLA</name><description>? JVLA continuum flux</description><unit>mJy</unit><ucd>phot.flux.density;em.radio</ucd><dataType xsi:type="vs:VOTableType">float</dataType><flag>nullable</flag></column><column><name>e_FJVLA</name><description>? rms uncertainty on JVLA measured flux</description><unit>mJy</unit><ucd>stat.error</ucd><dataType xsi:type="vs:VOTableType">float</dataType><flag>nullable</flag></column><column><name>logL(2-10)</name><description>? Chandra/XMM integrated 2-10Kev luminosity</description><unit>log(mW.m**-2)</unit><ucd>phys.luminosity;em.X-ray</ucd><dataType xsi:type="vs:VOTableType">float</dataType><flag>nullable</flag></column><column><name>Gamma</name><description>? X-ray photon index</description><ucd>meta.code;spect.index</ucd><dataType xsi:type="vs:VOTableType">float</dataType><flag>nullable</flag></column><column><name>ID</name><description>ID of each target</description><ucd>meta.id;meta.main</ucd><dataType xsi:type="vs:VOTableType" arraysize="7*">char</dataType></column><column><name>Band</name><description>? ALMA/NOEMA observed continuum frequency</description><unit>GHz</unit><ucd>em.freq;spect.continuum</ucd><dataType xsi:type="vs:VOTableType">float</dataType><flag>nullable</flag></column><column><name>Flux</name><description>? ALMA/NOEMA continuum flux</description><unit>mJy</unit><ucd>phot.flux.density;em.radio</ucd><dataType xsi:type="vs:VOTableType">float</dataType><flag>nullable</flag></column><column><name>e_Flux</name><description>? rms uncertainty on ALMA/NOEMA measured flux</description><unit>mJy</unit><ucd>stat.error;phot.flux</ucd><dataType xsi:type="vs:VOTableType">float</dataType><flag>nullable</flag></column><column><name>recno</name><description>Record number assigned by the VizieR team. 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Mean SED (lambdaL_lambda_) of the BAL subsample (in erg/s)</description><unit>log(1e-07W)</unit><ucd>phot.flux</ucd><dataType xsi:type="vs:VOTableType">float</dataType><flag>nullable</flag></column><column><name>s_logBAL</name><description>? rms uncertainty on the mean SED (lambdaL_lambda_) of the BAL subsample</description><unit>log(1e-07W)</unit><ucd>stat.error;instr.det.noise;stat.mean</ucd><dataType xsi:type="vs:VOTableType">float</dataType><flag>nullable</flag></column><column><name>logNonBAL</name><description>? Mean SED (lambdaL_lambda_) of the non-BAL subsample (in erg/s)</description><unit>log(1e-07W)</unit><ucd>phot.flux</ucd><dataType xsi:type="vs:VOTableType">float</dataType><flag>nullable</flag></column><column><name>s_logNonBAL</name><description>? rms uncertainty on the mean SED (lambdaL_lambda_) of the non-BAL subsample</description><unit>log(1e-07W)</unit><ucd>stat.error;instr.det.noise;stat.mean</ucd><dataType xsi:type="vs:VOTableType">float</dataType><flag>nullable</flag></column><column><name>logWeak</name><description>? 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