E+A galaxies

Alternative definitions (1), class: vernacular (0)
Term: E+A galaxies

E+A galaxies have strong Balmer absorption lines typical of young stars, but lack optical emission features (e.g. O III 5007) typical of star-forming regions and have metallic absorption lines (e.g. Ca H and K) indicative of an older population of dwarf stars. The presence of two distinct stellar populations and morphological observations suggest that E+A galaxies are the product of a gas-rich galaxy merger.

Created 2023.04.16
Last Modified 2023.04.16
Contributed by Ryan McGranaghan