CHARACTERIZATION OF A SAMPLE OF INTERMEDIATE-TYPE AGN. I. Spectroscopic properties and serendipitous discovery of new Dual AGN

dc.creatorVahram Chavushyan
dc.date2012-11-26
dc.date.accessioned2023-07-25T16:25:12Z
dc.date.available2023-07-25T16:25:12Z
dc.identifierhttp://inaoe.repositorioinstitucional.mx/jspui/handle/1009/2220
dc.identifier.urihttps://repositorioslatinoamericanos.uchile.cl/handle/2250/7807401
dc.descriptionA sample of 10 nearby intermediate-type active galactic nuclei (AGN) drawn from the Sloan Digital Sky Survey (SDSS-DR7) is presented. The aim of this work is to provide estimations of the black hole mass for the sample galaxies from the dynamics of the broad line region. For this purpose, a detailed spectroscopic analysis of the objects was done. Using BPT diagnostic diagrams we have carefully classified the objects as true intermediate-type AGN and found that 80%⁺⁷˙²%₋₁₇̣ ̣₃% are composite AGN. The black hole mass estimated for the sample is within 6.54±0.16< log MBH <7.81±0.14.Profile analysis show that five objects (J120655.63+501737.1, J121607.08+504930.0, J141238.14+391836.5, J143031.18+524225.8 and J162952.88+242638.3) have narrow double-peaked emission lines in both the red (Hα, [N II]λλ6548,6583 and [S II]λλ6716,6731) and the blue (Hβ and [O III]λλ4959,5007) region of the spectra,with velocity differences (ΔV) between the double peaks within 114 <ΔV <256km s⁻¹. Two of them, J121607.08+504930.0 and J141238.14+391836.5 are candidates for dual AGN since their double-peaked emission lines are dominated by AGN activity. In searches of dual AGN; Type 1, Type 1I and intermediate-type AGN shouldbe carefully separated, due to the high serendipitous number of narrow double-peaked sources (50%±14.4%) found in our sample.
dc.formatapplication/pdf
dc.languageeng
dc.publisherThe Astrophysical Journal
dc.relationcitation:Benítez, Erika., et al., (2012), CHARACTERIZATION OF A SAMPLE OF INTERMEDIATE-TYPE AGN. I. Spectroscopic properties and serendipitous discovery of new Dual AGN, The Astrophysical Journal, Vol. 763(1):1-37
dc.rightsinfo:eu-repo/semantics/openAccess
dc.rightshttp://creativecommons.org/licenses/by-nc-nd/4.0
dc.subjectinfo:eu-repo/classification/Inspec/Galaxies: active
dc.subjectinfo:eu-repo/classification/Inspec/Galaxies: Seyfert
dc.subjectinfo:eu-repo/classification/Inspec/Galaxies: nuclei
dc.subjectinfo:eu-repo/classification/Inspec/Quasars:emission lines
dc.subjectinfo:eu-repo/classification/cti/1
dc.subjectinfo:eu-repo/classification/cti/21
dc.subjectinfo:eu-repo/classification/cti/21
dc.titleCHARACTERIZATION OF A SAMPLE OF INTERMEDIATE-TYPE AGN. I. Spectroscopic properties and serendipitous discovery of new Dual AGN
dc.typeinfo:eu-repo/semantics/article
dc.typeinfo:eu-repo/semantics/acceptedVersion
dc.audiencestudents
dc.audienceresearchers
dc.audiencegeneralPublic


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