Astrophysics (index)

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 the apparently-Redshifted Lyman Alpha, the first Spectral Line of the Lyman Series. Given the confidence that the observed line is Lyman alpha, the redshift is:

1 + z = ————————

The prominent Lyman-alpha line is assumed to be evidence of star formation. Surveys of such galaxies reveal the Star Formation history of the universe.

(galaxy type,Lyman Series,star formation,redshift)
LAELAE J095950.99+021219.1Lyman-Alpha Emittergeneral prefix for LAEs