J/ApJS/267/19ivo://CDS.VizieR/J/ApJS/267/19doi:10.26093/cds/vizier.22670019CDSIlic D.Rakic N.Popovic L.C.2023-12-11T20:17:26Z2023-11-03T07:54:33ZCDS support team

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

cds-question@unistra.fractive-galactic-nucleivisible-astronomyspectroscopyredshiftedsurveysIn this study, a refined approach for multicomponent fitting of active galactic nuclei (AGNs) spectra is presented utilizing the newly developed Python code Fully Automated pythoN Tool for AGN Spectra analYsis (fantasy). AGN spectra are modeled by simultaneously considering the underlying broken power-law continuum, predefined emission line lists, and an FeII model, which is here extended to cover the wavelength range 3700-11000{AA}. The FeII model, founded solely on atomic data, effectively describes the extensive emission of the complex iron ion in the vicinity of the H{gamma} and H{beta} lines, as well as near the H{alpha} line, which was previously rarely studied. The proposed spectral fitting approach is tested on a sample of high-quality AGN spectra from the Sloan Digital Sky Survey DR17. The results indicate that when FeII emission is present near H{beta}, it is also detected redward from H{alpha}, potentially contaminating the broad H{alpha} line wings and thus affecting the measurements of its flux and width. The production of FeII emission is found to be strongly correlated with Eddington luminosity and appears to be controlled by a similar mechanism as the hydrogen Balmer lines. The study highlights the benefits of fitting type 1 AGN spectra with the fantasy code, pointing that it may be used as a robust tool for analyzing a large number of AGN spectra in the coming spectral surveys.2023ApJS..267...19Ihttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJS/267/19CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toV/154 : Sloan Digital Sky Surveys (SDSS), Release 16 (DR16) (Ahumada+, 2020)J/A+A/417/515 : I Zw 1 unusual emission line spectrum (Veron-Cetty+, 2004)J/ApJS/166/470 : SDSS-Spitzer type I QSOs IR photometry (Richards+, 2006)J/AJ/131/84 : AGNs and host galaxies information (Vanden Berk+, 2006)J/MNRAS/383/581 : Broad-line Balmer decrements in blue AGN (Dong+, 2008)J/ApJS/189/15 : FeII emission in a sample of AGN spectra (Kovacevic+, 2010)J/ApJ/736/86 : FeII emission in SDSS type 1 AGNs (Dong+, 2011)J/ApJS/194/45 : QSO properties from SDSS-DR7 (Shen+, 2011)J/A+A/579/A40 : PESSTO catalog (Smartt+, 2015)J/ApJ/818/L14 : RM AGNs accretion rates and BH masses (Du+, 2016)J/ApJS/229/39 : Narrow line Seyfert 1 gal. from SDSS-DR12 (Rakshit+, 2017)J/ApJS/243/21 : Broad-line AGN from SDSS-DR7 (Liu+, 2019)J/ApJS/241/34 : SDSS Reverberation Mapping (SDSS-RM) project (Shen+, 2019)J/ApJ/903/112 : SDSS Hb & CIV reverberation mapped AGNs (Dalla Bonta+, 2020)J/A+A/638/A13 : NGC 3516 optical flare (Ilic+, 2020)J/ApJS/249/17 : SDSS QSO DR14 spectral properties (Rakshit+, 2020)J/ApJS/258/38 : Iron template sp. from Mrk493 HST/STIS obs. (Park+, 2022)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJS/267/19https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJS/267/19http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJS/267/19https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJS/267/19https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJS/267/19http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJS/267/19GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJS/267/19/table2 (Measured spectral quantities for the total SDSS sample)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJS/267/19/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJS/267/19/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJS/267/19/table2?GETtext/xml+votable180.050000true224.601916736.52208330.0055555555555555566/2 549 676 1678 2060 2067 2091-2092 2105 2160-2161 2204 2215 2237 2280 2302 2572 4107 4130 4189 4289 4341-4342 4346-4347 4369 4373 4387 4436 4438 4473 4506 4510 4535 4558 4566 4589 4624 4641 4669 4687 4693 4754 4767 4803 4805 4812 4817 4821 4826-4827 4839 5017 5040 5070 5111 5141 5180 5216 5231 5238 5244 5247 5262 5267 5274 5292 5338 5349 5355 5359 5367 5391 5432 5437 5475 5481 5489 5498-5500 5505 5515 5532 5570 5576 5584-5585 5588 5597 5623 5642 5644 5680 5685 5687 5699 5711 5721 5746 5749 5756 5763 5769 5802 5820-5821 5825 5831 5855 5864 5876 5880 5913 5947 5957 5964 5988-5989 6028 6087 6095-6097 6113 6120-6121 6211 6218 6220 6223 6236 6270 6352 6357-6358 6364 6391 6408 6441 6458 6469 6473 6477 6505 6508 6511 6515 6523 6526 6544 6555 6557 6563 6574 6577 6582 6590 6593 6595 6599-6600 6605 6622 6628 6635 6645 6740 6928 7173 7193 7211 7214 7219 7222 7225 7241 7256 7277 7284 7296 7305 7321 7330-7331 7339 7364 7397 7430 7446 7484 7499 7526 7684 8197 8210 8215-8216 8246 8251 8260-8261 8384 8410 8430-8431 8469 8486 8510 8579 8606 8636 8641 8669 8742 8811-8812 8863 8868 8881 8883 8885 8893 8939 8963 8985 9018 9031 9051 9072 9144 9152 9181 9192 9196 9200 9208 9260 9262 9272 9304 9317 9333-9334 9377 9379 9398 9401 9412 9416 9422 9441 9473 9483 9499 9509 9519 9614 9627 9654-9656 9733 9790 9795 9844 9923 9959 10017 10019 10092 10115 10118 10150 10152 10168 10188 10219 10250 10269 10307 10329 10343 10396 10431 10436 10460 10470 10472 10487 10495 10528 10538 10543 10571 10578 10584 10592 10624 10634 10647 10653 10659 10665 10674 10694 10707 10709 10715 10751 10761 10774 10873 10889 10909 10935 10937 10939 10969 10981 10991 11003 11013 11091 11111 11125 11154 11172 11174 11191 11276 11283 11286 11314 11327 11351 11388 11392 11394 11427 11432 11437 11439 11462 11473 11502 11504 11535 11554 11779 11781 11809 11881 11930 11942-11943 13323 13331 13365 13369 13382 13464 13504 13574 16894 17214 17260 17383 17495 17497 17499 17560 17574 17675 17713 17715 17724 17729 17754 17756 17771 17779 17819 17822 17826-17827 17842-17843 17896 17950 17968 17981 18001 18009 18020 18047 18051 18060 18073 18089 18093 18136 18142 18175 18190 18207 18210 18216 18234 18273 18277 18307 18339 18407 18769 18771 18775-18776 18778 18786 18825 18834 18837 18848 18850 18853 18865 18870 18872 18902 18906 18935 18999 19015 19028 19037 19039 19046 19087 19095 19130 19144 19155 19159-19160 19170 19187 19227 19239-19240 19413 19416 19460-19461 19486 19493 19504 19526 19531 19540 19547 19563 19576 19613 19657 19714 19738 19775 19814 19860 19874 19893 19908-19909 19925 19934 19965 20029 20031 20063 20139 20144 20185 20189 20204 20219 20267 20272 20280 20337 20340 20352 20360 20380 22010 22355 22361 22743 23074 23203 23216 23418 25581 25585 25915 25926 25934 26017 26019 26041 26070 26103 26181 26183 26223 26228 26297 26310 26401 26452 26500 26509 26513 26583 26965 26995 27014 27023 27074-27075 27092 27249 27252 27293 27300 27309 27323 27349-27350 27363 27486 27489 27495 27513 27562 27580 27596 27599 27654 27721 27821 27851 27949 27982-27983 28012 28060 28081 28101 28115 28168 28275 28319 28346 28351 28356 28380 28440 28468 28471 28487 28508 28512 28549 28562 28571 28632 28639 28654 28666 30975 31321 31411 31429 31451 31466 31534 31650-31651 31657 31660 31676 31680 31685 31717 32438 36806https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJS/267/19?format=asciiOpticaldefaultJ/ApJS/267/19/table2Measured spectral quantities for the total SDSS sampleNEDNED column added by the CDSmeta.ref.urlcharSimbadSimbad column added by the CDSmeta.ref.urlcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSDSSSDSS DR17 name (JHHMMSS.ss+DDMMSS.s)meta.id;meta.maincharAvgA=Averaged measurements of all valuesmeta.codecharlogL5100[40.9/45.6] Log of 5100{AA} continuum luminosity, {lambda}*L{lambda}, in erg/slog(1e-07W)phys.luminosity;em.optfloate_logL5100[0.001/0.008] Uncertainty in logL5100log(1e-07W)stat.errorfloatlogL6200[41/45.6] Log of 6200{AA} continuum luminosity, {lambda}*L{lambda}, in erg/slog(1e-07W)phys.luminosity;em.optfloate_logL6200[0.001/0.005] Uncertainty in logL6200log(1e-07W)stat.errorfloatlogLHb[3.1/43.9] Log of H{beta} broad line luminosity, in erg/slog(1e-07W)phys.luminosity;em.line.Hbetafloatzspec[0.013/0.4]? Spectroscopic redshift; null for average rowsrc.redshiftfloatnullablealpha1[-3.7/1] Broken power-law index, {alpha}_1_ (1)meta.code;spect.indexfloatalpha2[-4.7/2.8] Broken power-law index, {alpha}_2_ (1)meta.code;spect.indexfloate_logLHb[0.001/0.05] Uncertainty in logLHblog(1e-07W)stat.errorfloatlogLHa[39.9/44.2] Log of H{beta} broad line luminosity, in erg/slog(1e-07W)phys.luminosity;em.line.Halphafloate_logLHa[0.001/0.3] Uncertainty in logLHalog(1e-07W)stat.errorfloatlogLFeIIb[36/43.7] Log of FeII blue band luminosity, in erg/slog(1e-07W)phys.luminosity;em.optfloate_logLFeIIb[0/2.1] Uncertainty in logLFeIIblog(1e-07W)stat.errorfloatlogLFeIIg[38.4/43.6] Log of FeII green band luminosity, in erg/slog(1e-07W)phys.luminosity;em.optfloate_logLFeIIg[0/1.5] Uncertainty in logLFeIIglog(1e-07W)stat.errorfloatlogLFeIIr[36.8/43.2] Log of FeII red band luminosity, in erg/slog(1e-07W)phys.luminosity;em.optfloate_logLFeIIr[0/29] Uncertainty in logLFeIIrlog(1e-07W)stat.errorfloatFWHMHb[1449/10881] Full width half maximum, broad H{beta}km/sspect.line.widthinte_FWHMHb[0/552] Uncertainty in FWHMHbkm/sstat.errorintFWHMHa[1105/9553] Full width half maximum, broad H{alpha}km/sspect.line.widthinte_FWHMHa[0/1380] Uncertainty in FWHMHakm/sstat.errorintFWHMFeII[1225/6000] Full width half maximum, FeIIkm/sspect.line.widthinte_FWHMFeII[0/1820] Uncertainty in FWHMFeIIkm/sstat.errorintL/LEdd[0.002/1.5] Eddington ratiophys.luminosity;arith.ratiofloate_L/LEdd[0/0.3] Uncertainty in L/LEddstat.errorfloatSloanDisplay the online SDSS-DR17 data for the nearest objectmeta.ref.urlchar_RAPositions from SDSS names (right ascension part)degpos.eq.ra;meta.mainnullable_DEPositions from SDSS names (declination part)degpos.eq.dec;meta.mainnullableJ/ApJS/267/19/table1FeII transitions used in the modelrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintlambda[3720/10872] Line transition wavelength, air, in Angstroms0.1nmem.wl;spect.line;phys.atmol.transitiondoubleloggf[-4.991/0.527] log of statistical weight*oscillator strengthstat.weight;phys.atmol.oscStrengthfloatTRlower-upper level transitionphys.atmol.transProb;phys.atmol.transition;phys.atmol.levelElo[2.54/9.97] Energy of lower stateeVphys.energy;phys.atmol.levelfloatEup[4.79/11.52] Energy of upper stateeVphys.energy;phys.atmol.levelfloatI[0/1.35] Relative intensity (1)spect.line.intensity;arith.ratiofloatRef[1/3] References (2)meta.refintJ/ApJS/267/19/table3*Predefined lists of emission lines used in FANTASY code (see Appendix)recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintLineLine namemeta.id;spect.linelambda[1640.4/10938.1] Line wavelength in air, in Angstroms0.1nmem.wl;spect.linedoubleTypeType based on line width expected in AGN spectrameta.note;src.morph.typecharGroupFANTASY code group name (1)meta.notechar