Lyman-alpha emitter
(LAE, Lyman-alpha emitting galaxy)
(redshifted galaxy emitting the Lyman alpha line)
A Lyman-alpha emitter (LAE or Lyman-alpha emitting galaxy)
is a galaxy detected via an emission line
interpreted as a redshifted Lyman alpha,
the first spectral line of the Lyman series.
Given the confidence that the observed line is
Lyman alpha, the redshift is:
λ
1 + z = ————————
1215.67Å
The prominent Lyman-alpha line is assumed to be evidence of star formation.
Surveys identifying such galaxies reveal
the star formation history of the universe,
and the resulting catalogs are taken
as samples for the study of star-forming galaxies at
the times indicated by the redshifts.
(galaxy type,Lyman series,star formation,redshift)
Further reading:
https://en.wikipedia.org/wiki/Lyman-alpha_emitter
http://ned.ipac.caltech.edu/level5/Sept15/Hayes/frames.html
https://home.ifa.hawaii.edu/users/cowie/z6/pict.html
| Prefix | Example | | |
| LAE | LAE J095950.99+021219.1 | general prefix for LAEs | |
|
Referenced by pages:
GLARE
Lyman alpha (Ly-α)
star formation (SF)
X-SHOOTER Lyman α survey at z = 2 (XLS-z2)
Index