Astronomy and Astrophysics – Astrophysics
Scientific paper
2002-11-05
Astron.J.125:580,2003
Astronomy and Astrophysics
Astrophysics
33 pages, 16 figures
Scientific paper
10.1086/345883
The Early Data Release from the Sloan Digital Sky survey provides one of the largest multicolor photometric catalogs currently available to the astronomical community. In this paper we present the first application of photometric redshifts to the $\sim 6$ million extended sources within these data (with 1.8 million sources having $r' < 21$). Utilizing a range of photometric redshift techniques, from empirical to template and hybrid techniques, we investigate the statistical and systematic uncertainties present within the redshift estimates for the EDR data. For $r'<21$ we find that the redshift estimates provide realistic redshift histograms with an rms uncertainty in the photometric redshift relation of 0.035 at $r'<18$ and rising to 0.1 at $r'<21$. We conclude by describing how these photometric redshifts and derived quantities, such as spectral type, restframe colors and absolute magnitudes, are stored within the SDSS database. We provide sample queries for searching on photometric redshifts and list the current caveats and issues that should be understood before using these photometric redshifts in statistical analyses of the SDSS galaxies.
Annis Jim
Benítez Narciso
Brinkmann Jon
Budavari Tamas
Connolly Andrew J.
No associations
LandOfFree
Photometric Redshifts for the SDSS Early Data Release 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 the SDSS Early Data Release, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Photometric Redshifts for the SDSS Early Data Release will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-635629