J/ApJS/189/15ivo://CDS.VizieR/J/ApJS/189/15doi:10.26093/cds/vizier.21890015CDSKovacevic J.Popovic L.C.Dimitrijevic M.S.2012-04-17T07:05:04Z2010-09-13T14:38:22ZCDS support team

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

cds-question@unistra.fratomic-physicsactive-galactic-nucleiredshiftedline-intensitiesWe present a study of optical FeII emission in 302 active galactic nuclei (AGNs) selected from the Sloan Digital Sky Survey. We group the strongest FeII multiplets into three groups according to the lower term of the transition (b^4^F, a^6^S, and a^4^G terms). These approximately correspond to the blue, central, and red parts, respectively, of the "iron shelf" around H{beta}. We calculate an FeII template that takes into account transitions into these three terms and an additional group of lines, based on a reconstruction of the spectrum of I Zw 1. This FeII template gives a more precise fit of the FeII lines in broad-line AGNs than other templates. We extract FeII, H{alpha}, H{beta}, [OIII], and [NII] emission parameters and investigate correlations between them. We find that FeII lines probably originate in an intermediate line region. We note that the blue, red, and central parts of the iron shelf have different relative intensities in different objects. Their ratios depend on continuum luminosity, FWHM H{beta}, the velocity shift of FeII, and the H{alpha}/H{beta} flux ratio. We examine the dependence of the well-known anti-correlation between the equivalent widths of FeII and [OIII] on continuum luminosity. We find that there is a Baldwin effect for [OIII] but an inverse Baldwin effect for the FeII emission. The [OIII]/FeII ratio thus decreases with L_{lambda}5100_. Since the ratio is a major component of the Boroson & Green Eigenvector 1 (EV1), this implies a connection between the Baldwin effect and EV1 and could be connected with AGN evolution. We find that spectra are different for H{beta} FWHMs greater and less than ~3000km/s, and that there are different correlation coefficients between the parameters.2010ApJS..189...15Khttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJS/189/15CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toVI/48 : Fe II Reference Catalogue (Viotti+ 1988)II/294 : The SDSS Photometric Catalog, Release 7 (Adelman-McCarthy+, 2009)J/A+A/309/81 : X-ray properties of AGN (Wang+, 1996)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJS/189/15https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJS/189/15http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJS/189/15https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJS/189/15https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJS/189/15http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJS/189/15GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJS/189/15/table12 (Parameters used in analysis of 302 AGN sample)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJS/189/15/table12?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJS/189/15/table12?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJS/189/15/table12?GETtext/xml+votable180.050000true0.04983330.04035830.0055555555555555566/0 4107 4163 4186 4194 4204 4215 4285 4369 4377 4435 4471 4501 4521 4540 4548 4626 4630 4681 4817 4842 4935 4974 4979 4985 5048 5072 5121 5141 5144 5153 5167 5187 5215 5231 5234 5267 5272 5274 5282 5295 5344 5355 5374 5375 5500 5504 5507 5515 5527 5529 5547 5549 5584 5600 5635 5671 5721 5728 5742 5764 5776 5857 5861 5891 5923 5957 5975 6009 6028 6033 6095 6097 6218 6220 6222 6235 6244 6398 6492 6534 6571 6585 6606 6635 7176 7188 7224 7237 7241 7242 7361 7445 7506 7526 7530 7566 7700 8216 8246 8256 8261 8264 8303 8323 8374 8392 8410 8448 8496 8505 8523 8604 8606 8610 8631 8642 8731 8764 8804 8845 8863 8866 8906 8918 8922 8947 8963 9018 9038 9064 9074 9092 9109 9146 9192 9216 9217 9263 9412 9440 9456 9483 9608 9612 9643 9750 9796 9844 9967 10020 10190 10260 10304 10345 10385 10443 10466 10511 10530 10580 10603 10637 10680 10689 10789 10881 10899 10950 10957 10981 11062 11096 11103 11174 11216 11270 11315 11384 11385 11388 11392 11459 11482 11502 11610 11787 11854 11872 11882 11906 11924 11930 16894 17233 17251 17254 17494 17502 17665 17756 17819 17829 17834 18001 18090 18388 18391 18536 18837 19007 19037 19052 19053 19383 19399 19406 19413 19417 19741 20033 21879 21885 23050 23059 23060 23216 25581 25980 26204 26233 26300 26310 26338 26346 26358 26396 26399 26448 26462 26500 26509 26513 26546 26552 26583 26615 27059 27075 27084 27090 27091 27293 27353 27436 27503 27725 27732 27795 27799 27821 27826 27830 27854 27890 27893 27951 27963 27976 27982 28060 28139 28147 28189 28202 28270 28275 28278 28281 28351 28440 28505 28571 28576 28605 28607 31440 31664 31674 31676 31679 32409 32683 49014 49091https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJS/189/15?format=asciiOpticaldefaultJ/ApJS/189/15/table12Parameters used in analysis of 302 AGN samplezRedshiftsrc.redshiftfloatR-Fe2FRatio of FeII F to total H{beta}spect.line.intensity;arith.ratiofloatrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSDSSSDSS name (HHMMSS.ss+DDMMSS.ss)meta.id;meta.maincharlogLcLog Lc 5100{AA} continuum luminositylog(1e-07W)phys.luminosity;em.opt.BfloatLHbTotal H{beta} line luminosity (10^40^erg/s)1e+33Wphys.luminosity;em.line.HbetadoubleWHbH{beta} FWHM; broad component onlykm/sspect.line.widthfloatW-NHbWidth of H{beta} NLR (Narrow Line Region) and central [OIII] component (1)km/sspect.line.widthfloatS-NHbShift of H{beta} NLR and central [OIII] componentkm/sspect.line.intensity;arith.ratiofloatR-NHbRatio of H{beta} NLR to total H{beta}spect.line.intensity;arith.ratiofloatW-IHbWidth of H{beta} ILR (Intermediate Line Region)km/sspect.line.widthfloatS-IHbShift of H{beta} ILRkm/sspect.line.intensity;arith.ratiofloatR-IHbRatio of H{beta} ILR to total H{beta}spect.line.intensity;arith.ratiofloatW-VBHbWidth of H{beta} VBLR (Very Broad Line Region)km/sspect.line.widthfloatS-VBHbShift of H{beta} VBLRkm/sspect.line.intensity;arith.ratiofloatR-VBHbRatio of H{beta} VBLR to total H{beta}spect.line.intensity;arith.ratiofloatR-O3Ratio of [OIII] 5007{AA} to total H{beta} (2)spect.line.intensity;arith.ratiofloatW-Fe2Width of FeIIkm/sspect.line.widthfloatS-Fe2Shift of FeIIkm/sspect.line.intensity;arith.ratiofloatR-Fe2tRatio of total FeII to total H{beta} (3)spect.line.intensity;arith.ratiofloatR-Fe2SRatio of FeII S to total H{beta}spect.line.intensity;arith.ratiofloatR-Fe2GRatio of FeII G to total H{beta}spect.line.intensity;arith.ratiofloatR-Fe2ZwRatio of FeII 1 Zw I to total H{beta} (4)spect.line.intensity;arith.ratiofloatW-He2Width of HeIIkm/sspect.line.widthfloatS-He2Shift of HeIIkm/sspect.line.intensity;arith.ratiofloatR-He2Ratio of HeII to total H{beta}spect.line.intensity;arith.ratiofloatEW-NHbEquivalent width of NLR H{beta}0.1nmspect.line.eqWidthfloatEW-IHbEquivalent width of ILR H{beta}0.1nmspect.line.eqWidthfloatEW-VBHbEquivalent width of VBLR H{beta}0.1nmspect.line.eqWidthfloatEW-O3Equivalent width of [OIII] 5007{AA}0.1nmspect.line.eqWidthfloatEW-Fe2FEquivalent width of FeII F0.1nmspect.line.eqWidthfloatEW-Fe2SEquivalent width of FeII S0.1nmspect.line.eqWidthfloatEW-Fe2GEquivalent width of FeII G0.1nmspect.line.eqWidthfloatEW-Fe2ZwEquivalent width of FeII 1 Zw I (4)0.1nmspect.line.eqWidthfloatR-Ha? Ratio of total H{alpha} to total H{beta}spect.line.intensity;arith.ratiofloatnullableW-Ha? Width of H{alpha} and [NII] (5)km/sspect.line.widthfloatnullableS-Ha? Shift of H{alpha} and [NII] (5)km/sspect.line.intensity;arith.ratiofloatnullableR-NHa? Ratio of NLR H{alpha} to total H{beta}spect.line.intensity;arith.ratiofloatnullableW-IHa? Width of ILR H{alpha}km/sspect.line.widthfloatnullableS-IHa? Shift of ILR H{alpha}km/sspect.line.intensity;arith.ratiofloatnullableR-IHa? Ratio of ILR H{alpha} to total H{beta}spect.line.intensity;arith.ratiofloatnullableW-FBHa? Width of VBLR H{alpha}km/sspect.line.widthfloatnullableS-FBHa? Shift of VBLR H{alpha}km/sspect.line.intensity;arith.ratiofloatnullableR-BHa? Ratio of VBLR H{alpha} to total H{beta}spect.line.intensity;arith.ratiofloatnullableR-N2? Ratio of [NII] 6583{AA} to total H{beta}spect.line.intensity;arith.ratiofloatnullableEW-NHa? Equivalent width of NLR H{alpha}spect.line.eqWidthfloatnullableEW-IHa? Equivalent width of ILR H{alpha}spect.line.eqWidthfloatnullableEW-VBHa? Equivalent width of VBLR H{alpha}spect.line.eqWidthfloatnullableEW-N2? Equivalent width of [NII] 6583{AA}spect.line.eqWidthfloatnullableSloanDisplay the SDSS data for this AGNmeta.ref.urlchar_RAPosition (derived from SDSS name) (right ascension part)degpos.eq.ra;meta.main_DEPosition (derived from SDSS name) (declination part)degpos.eq.dec;meta.main