Variability studies with SDSS

Collaboration
Jan, 2003
6 pages
Published in:
  • Mem.Soc.Ast.It. 74 (2003) 978
e-Print:
Experiments:

Citations per year

2003200720112015201802468
Abstract: (arXiv)
The potential of the Sloan Digital Sky Survey for wide-field variability studies is illustrated using multi-epoch observations for 3,000,000 point sources observed in 700 deg2 of sky, with time spans ranging from 3 hours to 3 years. These repeated observations of the same sources demonstrate that SDSS delivers ~0.02 mag photometry with well behaved and understood errors. We show that quasars dominate optically faint (r > 18) point sources that are variable on time scales longer than a few months, while for shorter time scales, and at bright magnitudes, most variable sources are stars.
Note:
  • 6 pages, 4 color figures, contribution for the workshop Variability with Wide-field Imagers, Lampedusa, September 16-20, 2002