E+A galaxies
type: Concept
contributor: AAS Frey.Katie Admin
broader: Early-type galaxies
broader: Post-starburst galaxies
definition: 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.
modified: 2020-11-24T17:28:29.043Z
modified: 2020-11-12T20:12:35.102Z

Early-type galaxies
type: Concept
narrower: E+A galaxies

Post-starburst galaxies
type: Concept
narrower: E+A galaxies