Chandra Observations of A 1.9 Kpc Separation Double X-Ray Source in A Candidate Dual Active Galactic Nucleus Galaxy At Z=0.16

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dc.contributor.utaustinauthorComerford, Julia M.en_US
dc.contributor.utaustinauthorPooley, Daviden_US
dc.creatorComerford, Julia M.en_US
dc.creatorPooley, Daviden_US
dc.creatorGerke, Brian F.en_US
dc.creatorMadejski, Greg M.en_US
dc.date.accessioned2016-10-28T19:37:10Z
dc.date.available2016-10-28T19:37:10Z
dc.date.issued2011-08en_US
dc.description.abstractWe report Chandra observations of a double X-ray source in the z = 0.1569 galaxy SDSS J171544.05+600835.7. The galaxy was initially identified as a dual active galactic nucleus (AGN) candidate based on the double-peaked [O III] lambda 5007 emission lines, with a line-of-sight velocity separation of 350 km s(-1), in its Sloan Digital Sky Survey spectrum. We used the Kast Spectrograph at Lick Observatory to obtain two long-slit spectra of the galaxy at two different position angles, which reveal that the two Type 2 AGN emission components have not only a velocity offset, but also a projected spatial offset of 1.9 h(70)(-1) kpc on the sky. Chandra/ACIS observations of two X-ray sources with the same spatial offset and orientation as the optical emission suggest that the galaxy most likely contains Compton-thick dual AGNs, although the observations could also be explained by AGN jets. Deeper X-ray observations that reveal Fe K lines, if present, would distinguish between the two scenarios. The observations of a double X-ray source in SDSS J171544.05+600835.7 are a proof of concept for a new, systematic detection method that selects promising dual AGN candidates from ground-based spectroscopy that exhibits both velocity and spatial offsets in the AGN emission features.en_US
dc.description.departmentAstronomyen_US
dc.description.sponsorshipW.J. McDonald Postdoctoral Fellowshipen_US
dc.description.sponsorshipCollege of Natural Sciencesen_US
dc.description.sponsorshipDepartment of Astronomy at the University of Texas at Austinen_US
dc.description.sponsorshipMcDonald Observatoryen_US
dc.description.sponsorshipU.S. Department of Energy DE-AC02-76SF00515en_US
dc.identifierdoi:10.15781/T21V5BG9N
dc.identifier.citationComerford, Julia M., David Pooley, Brian F. Gerke, and Greg M. Madejski. "Chandra Observations of a 1.9 kpc Separation Double X-Ray Source in a Candidate Dual Active Galactic Nucleus Galaxy at z= 0.16." The Astrophysical Journal Letters, Vol. 737, No. 1 (Aug., 2011): L19.en_US
dc.identifier.doi10.1088/2041-8205/737/1/l19en_US
dc.identifier.issn2041-8205en_US
dc.identifier.urihttp://hdl.handle.net/2152/43052
dc.language.isoEnglishen_US
dc.relation.ispartofen_US
dc.relation.ispartofserialAstrophysical Journal Lettersen_US
dc.rightsAdministrative deposit of works to Texas ScholarWorks: This works author(s) is or was a University faculty member, student or staff member; this article is already available through open access or the publisher allows a PDF version of the article to be freely posted online. The library makes the deposit as a matter of fair use (for scholarly, educational, and research purposes), and to preserve the work and further secure public access to the works of the University.en_US
dc.rights.restrictionOpenen_US
dc.subjectgalaxies: activeen_US
dc.subjectgalaxies: individual (sdss j171544.05+600835.7)en_US
dc.subjectgalaxies: interactionsen_US
dc.subjectgalaxies: nucleien_US
dc.subjectnarrow-line regionen_US
dc.subjectdigital-sky-surveyen_US
dc.subjectblack-holeen_US
dc.subjecto iiien_US
dc.subjectsmall scalesen_US
dc.subjectmergersen_US
dc.subjectkinematicsen_US
dc.subjectdiscoveryen_US
dc.subjectemissionen_US
dc.subjectquasarsen_US
dc.subjectastronomy & astrophysicsen_US
dc.titleChandra Observations of A 1.9 Kpc Separation Double X-Ray Source in A Candidate Dual Active Galactic Nucleus Galaxy At Z=0.16en_US
dc.typeArticleen_US

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