SDSS
catalog data demo, March 30, 2007
9
Jordan Raddick and Ani Thakar
Searching for data meeting certain
criteria
•Search
for data that meets certain criteria
•Return
matching data, and only matching data
•Example:
search for galaxies
with spectra in Abell 168
with spectra in Abell 168
–RA = 18.84, Dec = 0.26,
radius = 3 arcmin
radius = 3 arcmin
–Limit
to galaxies g < 18
–Return
RA, Dec,
magnitudes, redshift
magnitudes, redshift