Astronomy and Astrophysics – Astrophysics
Scientific paper
2001-10-30
Astron.Astrophys.338:732,2002
Astronomy and Astrophysics
Astrophysics
7 pages, submitted to Astronomy & Astrophysics
Scientific paper
10.1051/0004-6361:20020538
Galaxy clusters can be detected as surface brightness enhancements in smoothed optical surveys. This method does not require individual galaxies to be identifiable, and enables clusters to be detected out to surprisingly high redshifts, as recently demonstrated by the Las Campanas Distant Cluster Survey (LCDCS). Here, we investigate redshift limits for cluster detection in the Sloan Digital Sky Survey (SDSS). Calibrating assumptions about the surface brightness profile, the mass-to-light ratio, and the spectral energy distribution of galaxy clusters using available observational data, we show that it should be possible to detect galaxy groups out to redshifts of ~0.5, and massive galaxy clusters out to redshifts of ~1.2 in summed r'+i'+z' SDSS data. Redshift estimates can be derived from the SDSS magnitudes of brightest cluster members out to redshifts near unity. Over the area of sky it covers, SDSS should find >~98% of the clusters detectable by the Planck satellite through the thermal Sunyaev-Zel'dovich effect. The few Planck clusters not detected in SDSS will almost all be at z>~1.2.
Bartelmann Matthias
White Simon D. M.
No associations
LandOfFree
Cluster detection from surface-brightness fluctuations in SDSS data 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 Cluster detection from surface-brightness fluctuations in SDSS data, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Cluster detection from surface-brightness fluctuations in SDSS data will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-12980