Re: Lyman alpha question


"sean" <jaymoseley@xxxxxxxxxxx> writes:
....
THe other question is would it be the case that where lets say ,as
above ,the V filter was on the redward side of the L apha break and
visible at 19mag is it still possible that if one were to go much
deeper in U would there eventually be a detection but just at a much
weaker mag? The reason I ask this is theres a gcn example where the
Lyman break is 484nm and redward of B(almost) and V( definitely) yet
there are detections in B and U bands which shouldnt be the case if the
break were at 484. Thats why I was wondering if there are certain
circumstances where the rule is broken.


The absorption is not necessarily 100%, but rather the overall
continuum level changes quite dramatically (and often Ly-alpha is seen
in emission from the emitting galaxy).
Example: Steidel et al. 2003, ApJ, 592, 728 (astro-ph/0305378)

CM
.