J/ApJ/867/66ivo://CDS.VizieR/J/ApJ/867/66doi:10.26093/cds/vizier.18670066CDSComerford J.M.Nevin R.Stemo A.Muller-Sanchez F.Barrows R.S.,Cooper M.C.Newman J.A.2019-11-04T11:48:40Z2019-11-04T12:39:38ZCDS support team

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

cds-question@unistra.fractive-galactic-nucleivisible-astronomyspectroscopygalaxy-kinematicsDouble-peaked narrow emission lines in active galactic nucleus (AGN) spectra can be produced by AGN outflows, rotation, or dual AGNs, which are AGN pairs in ongoing galaxy mergers. Consequently, double-peaked narrow AGN emission lines are useful tracers of the coevolution of galaxies and their supermassive black holes, as driven by AGN feedback and AGN fueling. We investigate this concept further with follow-up optical longslit observations of a sample of 95 Sloan Digital Sky Survey (SDSS) galaxies that have double-peaked narrow AGN emission lines. Based on a kinematic analysis of the longslit spectra, we confirm previous work that finds that the majority of double-peaked narrow AGN emission lines are associated with outflows. We also find that eight of the galaxies have companion galaxies with line-of-sight velocity separations <500km/s and physical separations <30kpc. Since we find evidence of AGNs in both galaxies, all eight of these systems are compelling dual AGN candidates. Galaxies with double-peaked narrow AGN emission lines occur in such galaxy mergers at least twice as often as typical active galaxies. Finally, we conclude that at least 3% of SDSS galaxies with double-peaked narrow AGN emission lines are found in galaxy mergers where both galaxies are resolved in SDSS imaging.2018ApJ...867...66Chttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/867/66CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toV/147 : The SDSS Photometric Catalogue, Release 12 (Alam+, 2015)J/ApJ/705/L76 : AGNs with double-peaked [OIII] lines (Wang+, 2009)J/ApJ/708/427 : Type 2 AGNs with double-peaked [OIII] lines (Liu+, 2010)J/ApJ/716/866 : SDSS search for binary AGN (Smith+, 2010)J/ApJ/753/42 : Double-peaked AGN. I. Dual AGN candidates (Comerford+, 2012)J/ApJS/201/31 : Emission-line galaxies from SDSS. I. (Ge+, 2012)J/ApJ/746/L22 : Dual AGNs in the nearby Universe (Koss+, 2012)J/ApJ/769/95 : [NeV] or [NeIII] double peaked SDSS quasars (Barrows+, 2013)J/ApJ/777/64 : A search for double-peaked AGNs in AGES (Comerford+, 2013)J/ApJ/789/112 : Offset AGN Candidates (Comerford+, 2014)J/ApJ/832/67 : Double-peaked narrow lines in AGN. II. z<0.1 (Nevin+, 2016)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/867/66https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/867/66http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/867/66https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/867/66https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/867/66http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/867/66GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/867/66/table1 (Summary of observations)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/867/66/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/867/66/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/867/66/table1?GETtext/xml+votable180.050000true1.73687515.81330560.0055555555555555566/4139 4234 4290 4295 4307 4366 4444 4501 4525 4572 4574 4900 4939 4966 4974 4998 5181 5203 5259 5314 5322 5363 5393 5464 5514 5623 5694 5697 5841 6236 6254 6356 6471 6494 6560 6568 6593 6640 7266 7287 8543 8612 8642 8659 8972 8981 9078 9083 9356 9433 9608 9764 9950 10213 10346 10362 10534 10779 10803 11026 11042 11149 17497 17555 17566 17827 17832 17999 18405 18545 18774 18791 18864 19114 19678 22003 22714 26084 26164 26174 26212 26379 27058 27710 27791 27879 28311 28465 28503 28579 28585 28590 28617 31547 31677https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/867/66?format=asciiOpticaldefaultJ/ApJ/867/66/table1Summary of observations_DEPositions from SDSS names (declination part)degpos.eq.dec;meta.mainSloanDisplay the online SDSS data for the nearest objectmeta.ref.urlcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSDSSSDSS designation (JHHMMSS.ss+DDMMSS.s)meta.id;meta.maincharInstTelescope/instrument (1)meta.notecharRSpectral resolution (2)spect.resolutioncharLinesBPT emission lines (3)meta.id;spect.linecharDateObservation date; UT (4)time.epoch;obscharPA1Position angle of first observation (5)degpos.posAng;obsfloatPA2[90/178.1]? Position angle of second observation (5)degpos.posAng;obsfloatnullableExpExposure time at each position angle (6)stime.duration;obs.exposurecharNameAbbreviated name as used in Table 2; column added by CDSmeta.idcharprimarySimbadSimbad column added by the CDSmeta.ref.urlcharNEDNED column added by the CDSmeta.ref.urlchar_RAPositions from SDSS names (right ascension part)degpos.eq.ra;meta.mainJ/ApJ/867/66/table2Kinematic classifications of the 95 galaxiesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameSDSS designation (JHHMM+DDMM)meta.id;meta.maincharprimaryPAobsObserved position angle (1)degpos.posAngfloatNRNumber of spatial rows (2)meta.numbercharVr[-664/1231] Line-of-sight velocity difference (3)km/sphys.veloc;arith.difffloatE_Vr[0/792] Upper uncertainty on Vrkm/sstat.error;stat.maxfloate_Vr[0.1/297] Lower uncertainty on Vrkm/sstat.errorfloatsigma1[67/2241] Dispersion of first component of a double-Gaussian fit to emission line profilekm/sinstr.dispersionfloatE_sigma1[2/607] Upper uncertainty on sigma1km/sstat.error;stat.maxfloate_sigma1[0/397] Lower uncertainty on sigma1km/sstat.errorfloatsigma2[61/1053] Dispersion of second component of a double-Gaussian fit to emission line profilekm/sinstr.dispersionfloatE_sigma2[0.6/929] Upper uncertainty on sigma2km/sstat.error;stat.maxfloate_sigma2[0.1/295] Lower uncertainty on sigma2km/sstat.errorfloatPAgal? Galaxy r-band major axis position angle (1)degpos.posAngfloatnullablePAO3? Maximum extent [OIII] 5007 position angle (1)degpos.posAngfloatnullablee_PAO3[0.2/13]? Uncertainty in PAO3degstat.errorfloatnullableA[-0.9/1] Asymmetry of emission line profilemeta.notefloatClassKinematic classificationsrc.classchar