GOODS Evidence for Black Hole-Bulge Correlation and against Merger-AGN Connection at 0.4 < z < 1.3

Mathematics – Logic

Scientific paper

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

Scientific paper

We investigate morphological structure parameters and local environments of distant moderate-luminosity AGN host galaxies in the overlap region between the HST/ACS observations of the Great Observatories Origins Deep Survey (GOODS/ACS) and the two Chandra Deep Fields. We compute asymmetry and concentration indices and near-neighbor counts for ˜ 34000 GOODS/ACS galaxies, including ˜ 350 X-ray-selected AGN hosts.
Both the near-neighbor counts and the z850 asymmetries of the 233 resolved, z850<23 AGN host galaxies are consistent with the field values, implying no close connection between galaxy mergers and moderate-luminosity AGN activity out to appreciable lookback times (z < ˜ 1.3) approaching the epoch of peak AGN activity in the universe. The z850 concentration indices for the AGN hosts are clearly skewed towards larger values; this 7-sigma discrepancy is much larger than could be explained by the contribution of the nuclear point source to the hosts' optical emission. From this we infer that the tight correlation observed locally between supermassive central black hole mass and host galaxy properties (including concentration index) persists to the substantial redshifts of our AGN and control samples.
The multicolor GOODS/ACS imaging allows us to track the comparative evolution of these morphological and environmental indicators in rest-frame B-band out to z ˜ 1.3 using volume-limited samples constructed from AGN redshifts in the literature and ˜ 10000 GOODS/ACS field galaxy photometric redshifts. The results described above for z850 also hold for rest-frame B-band in each of three redshift intervals spanning 0.4 < z < 1.3.

No associations

LandOfFree

Say what you really think

Search LandOfFree.com for scientists and scientific papers. Rate them and share your experience with other people.

Rating

GOODS Evidence for Black Hole-Bulge Correlation and against Merger-AGN Connection at 0.4 < z < 1.3 does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with GOODS Evidence for Black Hole-Bulge Correlation and against Merger-AGN Connection at 0.4 < z < 1.3, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and GOODS Evidence for Black Hole-Bulge Correlation and against Merger-AGN Connection at 0.4 < z < 1.3 will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFWR-SCP-O-1420580

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.