Galaxy effective radius
id:
galaxy-effective-radius-167-13407666
title:
Galaxy effective radius
text:
Galaxy effective radius or half-light radius is the radius at which half of the total light of a galaxy is emitted. This assumes the galaxy has either intrinsic spherical symmetry or is at least circularly symmetric as viewed in the plane of the sky. Alternatively, a half-light contour, or isophote, may be used for spherically and circularly asymmetric objects. R e is an important length scale in R 4 term in de Vaucouleurs law, which characterizes a specific rate at which surface brightness decr
brand slug:
wiki
category slug:
encyclopedia
description:
Radius which encloses 50% of the total light of a galaxy
original url:
https://en.wikipedia.org/wiki/Galaxy_effective_radius
date created:
2006-11-23T06:52:45Z
date modified:
2024-08-30T12:47:44Z
main entity:
{"identifier":"Q1295998","url":"https://www.wikidata.org/entity/Q1295998"}
image:
{"content_url":"https://upload.wikimedia.org/wikipedia/commons/3/3c/Half_light_radius_simple.svg","width":742,"height":689}
fields total:
13
integrity:
16