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Galaxy effective radius

Galaxy effective radius or half-light radius ( R e {\displaystyle R_{e}} ) 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…

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Galaxy effective radius

Nodes9
Edges8
Triples0
Avg. degree1.78
Density0.222222
Components1

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displaystyle galaxy radius half-light circularly surface brightness 67 cdot function light contour isophote effective half total emitted assumes either intrinsic

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