Photometric Redshifts for Galaxies in the GOODS Southern Field

Details Photometric Redshifts for Galaxies in the GOODS Southern Field Photometric Redshifts for Galaxies in the GOODS Southern Field

2003-09-02

arxiv.org/abs/astro-ph/0309068v1

Astrophys.J.600:L167-L170,2004

Astronomy and Astrophysics

Astrophysics

Accepted for publication in ApJL

Scientific paper

10.1086/378186

We use extensive multi-wavelength photometric data from the Great Observatories Origins Deep Survey (GOODS) to estimate photometric redshifts for a sample of 434 galaxies with spectroscopic redshifts in the Chandra Deep Field South. Using the Bayesian method, which incorporates redshift/magnitude priors, we estimate photometric redshifts for galaxies in the range 18 < R (AB) < 25.5, giving an rms scatter of 0.11. The outlier fraction is < 10%, with the outlier-clipped rms being 0.047. We examine the accuracy of photometric redshifts for several, special sub--classes of objects. The results for extremely red objects are more accurate than those for the sample as a whole, with rms of 0.051 and very few outliers (3%). Photometric redshifts for active galaxies, identified from their X-ray emission, have a dispersion of 0.104, with 10% outlier fraction, similar to that for normal galaxies. Employing a redshift/magnitude prior in this process seems to be crucial in improving the agreement between photometric and spectroscopic redshifts.

Affiliated with

Also associated with

No associations

Rating

Photometric Redshifts for Galaxies in the GOODS Southern Field 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 Photometric Redshifts for Galaxies in the GOODS Southern Field, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Photometric Redshifts for Galaxies in the GOODS Southern Field will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-493025