The Right Search

Here are the magic words that let you search for all bright blue galaxies:

select p.objid, p.ra, p.dec, p.g, p.r
from photoObj p, specObj s
where p.specobjid = s.specobjid
and p.g-p.r < 0
and p.g < 15
and p.r < 15
and s.specClass = 2

Don't worry, you'll learn what each of these terms means later in the tutorial.

If you enter these words in the SQL search tool, the tool will return 6 results, with the object ID below. Click on the links to see the galaxies in the Object Explorer. Do you think it is really a bright blue galaxy?