J/A+AS/135/83ivo://CDS.VizieR/J/A+AS/135/83CDSMarquez I.Durret F.Petitjean P.2012-11-13T12:57:12Z2010-10-15T14:37:48ZCDS support team

CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France

cds-question@unistra.frquasarsinfrared-photometryWe have observed a sample of 15 and 8 quasars with redshifts between 0.11 and 0.87 (mean value 0.38) in the J and K' bands respectively. Eleven of the quasars were previously known to be associated with extended emission line regions. After deconvolution of the image, substraction of the PSF when possible, and identification of companions with the help of HST archive images when available, extensions are seen for at least eleven quasars. However, average profiles are different from that of the PSF in only four objects, for which a good fit is obtained with an r^1/4^ law, suggesting that the underlying galaxies are ellipticals. Redshifts were available in the literature for surrounding objects in five quasar fields. For these objects, one to five companion galaxies were found. One quasar even belongs to a richness class 1 cluster. Most other quasars in our sample have nearby galaxies in projection which may also be companions. Environmental effects are therefore probably important to account for the properties of these objects.1999A&AS..135...83Mhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+AS/135/83CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+AS/135/83https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+AS/135/83http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+AS/135/83https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+AS/135/83https://vizier.iucaa.in/viz-bin/votable?-source=J/A+AS/135/83http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+AS/135/83GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+AS/135/83/table2 (Magnitudes and positions for quasars and nearby detected objets)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+AS/135/83/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/A+AS/135/83/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+AS/135/83/table2?GETtext/xml+votable180.050000true60.7259731-34.92393570.0055555555555555566/4340-4341 8452 8528 8812 19315 21955 25742 26499 27955 31983 34519 37650 38814 38836 408381.398457827073138e-19 1.7798557115773645e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+AS/135/83?format=asciiInfrareddefaultJ/A+AS/135/83/table2Magnitudes and positions for quasars and nearby detected objetsTypeType (3)meta.codecharz? Redshiftsrc.redshiftfloatnullableIdentIdentificationsmeta.idcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintQSOQuasar namemeta.id;meta.mainchar[MDP99]Identification of objects near QSO (1)meta.idcharRA1950Right ascension (1950)pos.eq.ra;meta.mainDE1950Declination (1950)pos.eq.dec;meta.mainDRAOffset in right ascension from QSOarcsecpos.eq.ra;arith.difffloatDDEOffset in declination from QSOarcsecpos.eq.dec;arith.difffloatJmag? J magnitudemagphot.mag;em.IR.JfloatnullableK'mag? K' magnitudemagphot.mag;em.IR.KfloatnullableRmag? R magnitude from published optical photometrymagphot.mag;em.opt.Rfloatnullablen_Rmag[g] g: g magnitudes from reference 8.meta.notecharRef? Reference (2)meta.ref;pos.frameintnullableNo? Number of the object in the reference Ref (2)meta.idintnullablen_Type[c] c: Cosmic ray or noise event in reference 2.meta.notechar_RA.icrsRight ascension (ICRS) (computed by VizieR, not part of the original data)pos.eq.ranullableindexed_DE.icrsDeclination (ICRS) (computed by VizieR, not part of the original data)pos.eq.decnullableindexed