Astronomy and Astrophysics – Astrophysics
Scientific paper
1999-10-04
Astronomy and Astrophysics
Astrophysics
4 pages, 2 figures; to appear in the proceedings of "The Hy-Redshift Universe: Galaxy Formation and Evolution at High Redshift
Scientific paper
We have carried out a study to simulate distant clusters of galaxies in deep ground-based optical images. We find that when model galaxies are added to deep images obtained with the William Herschel Telescope, there is considerable scatter of the recovered galaxy colours away from the model values; this scatter is larger than that expected from photometric errors and is significantly affected by confusion, due to ground-based seeing, between objects in the field. In typical conditions of $\approx$ 1-arcsec seeing, the combination of confusion and incompleteness causes a considerable underestimation of the true surface density of $z \approx 3$ galaxies. We argue that the actual surface density of $z \approx 3$ galaxies may be several times greater than that estimated by previous ground-based studies, consistent with the surface density of such objects found in the HDF.
Baker Joanne C.
Cotter Garret
Haynes Toby
Jones Michael E.
Saunders Richard
No associations
LandOfFree
Completeness and confusion in the identification of Lyman-break galaxies 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 Completeness and confusion in the identification of Lyman-break galaxies, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Completeness and confusion in the identification of Lyman-break galaxies will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-643025