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<ri:Resource created="2022-02-17T12:25:09Z" 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>SDSS-RM project: MgII lags from 4yrs monitoring</title><shortName>J/ApJ/901/55</shortName><identifier>ivo://CDS.VizieR/J/ApJ/901/55</identifier><altIdentifier>doi:10.26093/cds/vizier.19010055</altIdentifier><curation><publisher ivo-id="ivo://CDS">CDS</publisher><creator><name>Homayouni Y.</name></creator><creator><name>Trump J.R.</name></creator><creator><name>Grier C.J.</name></creator><creator><name>Horne K.</name></creator><creator><name>Shen Y.</name></creator><creator><name>Brandt W.N.,Dawson K.S.</name></creator><creator><name>Fonseca Alvarez G.</name></creator><creator><name>Green P.J.</name></creator><creator><name>Hall P.B.,Hernandez Santisteban J.V.</name></creator><creator><name>Ho L.C.</name></creator><creator><name>Kinemuchi K.</name></creator><creator><name>Kochanek C.S.,Li J.I.-H.</name></creator><creator><name>Peterson B.M.</name></creator><creator><name>Schneider D.P.</name></creator><creator><name>Starkey D.A.</name></creator><creator><name>Bizyaev D.,Pan K.</name></creator><creator><name>Oravetz D.</name></creator><creator><name>Simmons A.</name></creator><date role="Updated">2022-05-18T13:31:34Z</date><date role="Created">2022-02-17T12:25:09Z</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>quasars</subject><subject>redshifted</subject><subject>visible-astronomy</subject><subject>sloan-photometry</subject><description>We present reverberation mapping results for the MgII{lambda}2800{AA} broad emission line in a sample of 193 quasars at 0.35&lt;z&lt;1.7 with photometric and spectroscopic monitoring observations from the Sloan Digital Sky Survey Reverberation Mapping project during 2014-2017. We find significant time lags between the MgII and continuum lightcurves for 57 quasars, and define a "gold sample" of 24 quasars with the most reliable lag measurements. We estimate false-positive rates for each lag that range from 1% to 24%, with an average false-positive rate of 11% for the full sample and 8% for the gold sample. There are an additional ~40 quasars with marginal MgII lag detections, which may yield reliable lags after additional years of monitoring. The MgII lags follow a radius-luminosity relation with a best-fit slope that is consistent with {alpha}=0.5, but with an intrinsic scatter of 0.36dex that is significantly larger than found for the H{beta} radius-luminosity relation. For targets with SDSS-RM lag measurements of other emission lines, we find that our MgII lags are similar to the H{beta} lags and ~2-3 times larger than the CIV lags. This work significantly increases the number of MgII broad-line lags and provides additional reverberation-mapped black hole masses, filling the redshift gap at the peak of supermassive black hole growth between the H{beta} and CIV emission lines in optical spectroscopy.</description><source format="bibcode">2020ApJ...901...55H</source><referenceURL>https://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/901/55</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/632/799">J/ApJ/632/799 : NGC4395 light curves (Peterson+, 2005)</relatedResource><relatedResource ivo-id="ivo://CDS.VizieR/J/ApJ/698/895">J/ApJ/698/895 : Variations in QSOs optical flux (Kelly+, 2009)</relatedResource><relatedResource ivo-id="ivo://CDS.VizieR/J/ApJ/699/800">J/ApJ/699/800 : Mass functions of active black holes (Vestergaard+, 2009)</relatedResource><relatedResource ivo-id="ivo://CDS.VizieR/J/ApJ/716/993">J/ApJ/716/993 : LAMP: reverberation mapping of H and He lines (Bentz+, 2010)</relatedResource><relatedResource ivo-id="ivo://CDS.VizieR/J/ApJS/194/45">J/ApJS/194/45 : QSO properties from SDSS-DR7 (Shen+, 2011)</relatedResource><relatedResource ivo-id="ivo://CDS.VizieR/J/ApJ/746/169">J/ApJ/746/169 : Luminosity function of broad-line quasars (Shen+, 2012)</relatedResource><relatedResource ivo-id="ivo://CDS.VizieR/J/ApJ/755/60">J/ApJ/755/60 : Reverberation mapping for 5 Seyfert 1 galaxies (Grier+, 2012)</relatedResource><relatedResource ivo-id="ivo://CDS.VizieR/J/A+A/562/A34">J/A+A/562/A34 : UV FeII template from LBQS 2113-4538 (Hryniewicz+, 2014)</relatedResource><relatedResource ivo-id="ivo://CDS.VizieR/J/ApJS/216/4">J/ApJS/216/4 : SDSS-RM project: technical overview (Shen+, 2015)</relatedResource><relatedResource ivo-id="ivo://CDS.VizieR/J/ApJS/217/26">J/ApJS/217/26 : Lick AGN monitoring 2011: light curves (Barth+, 2015)</relatedResource><relatedResource ivo-id="ivo://CDS.VizieR/J/ApJ/806/22">J/ApJ/806/22 : SEAMBHs IV. 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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>z</name><description>[0.36/1.7] Improved systemic redshift (1)</description><ucd>src.redshift</ucd><dataType xsi:type="vs:VOTableType">float</dataType></column><column><name>RAJ2000</name><description>[211.47/216.06] Right Ascension (J2000) (1)</description><unit>deg</unit><ucd>pos.eq.ra;meta.main</ucd></column><column><name>DEJ2000</name><description>[51.8/54.2] Declination (J2000) (1)</description><unit>deg</unit><ucd>pos.eq.dec;meta.main</ucd></column><column><name>imag</name><description>[17.73/21.64] i band PSF magnitude (1)</description><unit>mag</unit><ucd>phot.mag;em.opt.I</ucd><dataType xsi:type="vs:VOTableType">float</dataType></column><column><name>SNR2</name><description>[20/190] signal-to-noise-ratio of the MgII variability (SNR2=({chi}^2^-DOF))^0.5^)</description><ucd>src.var.index</ucd><dataType xsi:type="vs:VOTableType">float</dataType></column><column><name>logL3000</name><description>[43.5/46.1] log of continuum luminosity at rest-frame 3000{AA}, in erg/s (1)</description><unit>log(1e-07W)</unit><ucd>phys.luminosity</ucd><dataType xsi:type="vs:VOTableType">float</dataType></column><column><name>tau-JAV</name><description>[17/388] Rest-frame lag with JAVELIN</description><unit>d</unit><ucd>stat.fit.residual</ucd><dataType xsi:type="vs:VOTableType">float</dataType></column><column><name>E_tau-JAV</name><description>[3/31] Upper uncertainty on tau-JAV</description><unit>d</unit><ucd>stat.error;stat.max</ucd><dataType xsi:type="vs:VOTableType">float</dataType></column><column><name>e_tau-JAV</name><description>[2.6/74.3] Lower uncertainty on tau-JAV</description><unit>d</unit><ucd>stat.error</ucd><dataType xsi:type="vs:VOTableType">float</dataType></column><column><name>fpeak</name><description>[60/97.6] Fraction of the lag posterior within the primary peak</description><unit>%</unit><ucd>stat.fit.param</ucd><dataType xsi:type="vs:VOTableType">float</dataType></column><column><name>FPR</name><description>[1/24] False-positive rate</description><unit>%</unit><ucd>meta.code</ucd><dataType xsi:type="vs:VOTableType">float</dataType></column><column><name>tau-CREAM</name><description>[-579/367] Rest-frame lag with CREAM</description><unit>d</unit><ucd>stat.fit.residual</ucd><dataType xsi:type="vs:VOTableType">float</dataType></column><column><name>E_tau-CREAM</name><description>[1/31.5] Upper uncertainty on tau-CREAM</description><unit>d</unit><ucd>stat.error;stat.max</ucd><dataType xsi:type="vs:VOTableType">float</dataType></column><column><name>e_tau-CREAM</name><description>[1.3/48.3] Lower uncertainty on tau-CREAM</description><unit>d</unit><ucd>stat.error</ucd><dataType xsi:type="vs:VOTableType">float</dataType></column><column><name>logMBH</name><description>[7.7/9.6] Log of MgII-based black hole mass</description><unit>log(solMass)</unit><ucd>phys.mass</ucd><dataType xsi:type="vs:VOTableType">float</dataType></column><column><name>E_logMBH</name><description>[0.16/0.42] Upper uncertainty on logMBH</description><unit>log(solMass)</unit><ucd>stat.error;stat.max</ucd><dataType xsi:type="vs:VOTableType">float</dataType></column><column><name>e_logMBH</name><description>[0.16/0.22] Lower uncertainty on logMBH</description><unit>log(solMass)</unit><ucd>stat.error</ucd><dataType xsi:type="vs:VOTableType">float</dataType></column><column><name>Gold</name><description>[0/1] Gold flag (2)</description><ucd>meta.code</ucd><dataType xsi:type="vs:VOTableType">int</dataType></column><column><name>Sloan</name><description>Display the online SDSS-DR14 data for the nearest object</description><ucd>meta.ref.url</ucd><dataType xsi:type="vs:VOTableType" arraysize="*">char</dataType></column><column><name>NED</name><description>NED column added by the CDS</description><ucd>meta.ref.url</ucd><dataType xsi:type="vs:VOTableType" arraysize="*">char</dataType></column></table></schema></tableset></ri:Resource>