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          Institute: MPI für Astronomie     Collection: Publikationen_mpia     Display Documents

ID: 693825.0, MPI für Astronomie / Publikationen_mpia
Alas, no Merger-AGN connection at z < 1
Authors:Cisternas, M.; Jahnke, K.; Collaboration, Cosmos; Xu, C. K.; Scoville, N. Z.; Sanders, D. B.
Publisher:Astronomical Society of the Pacific
Date of Publication (YYYY-MM-DD):2013
Title of Proceedings:Galaxy Mergers in an Evolving Universe
Start Page:173
End Page:176
Title of Series:ASP Conf. Ser.
Volume (in Series):477
Name of Conference/Meeting:Galaxy Mergers in an Evolving Universe
Review Status:Internal review
Audience:Experts Only
Abstract / Description:In our recent study, we set out to understand the relevance of major merging as an AGN triggering mechanism at z < 1. Using HST/ACS imaging from the COSMOS survey, we visually analyzed the morphologies of 140 X-ray-selected AGN looking for signatures of recent mergers, and compared them with a control sample of over 1200 matched inactive galaxies. We found that the merger fraction of the AGN host galaxies is statistically the same as that of the equivalent inactive galaxy population. Together with the fact that the majority of the AGN hosts are disk-dominated, an unlikely relic of an old major merger, our results are the strongest evidence to date that major merging has not been the dominant black hole fueling mechanism for the last 8 Gyr.
Comment of the Author/Creator:Date: 2013, October 1, 2013
External Publication Status:published
Document Type:Conference-Paper
Communicated by:N. N.
Affiliations:MPI für Astronomie
Identifiers:URL:http://cdsads.u-strasbg.fr/abs/2013ASPC..477..173C [ID No:1]
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