emission-line galaxy

emission-line galaxy

[i′mish·ən ¦līn ′gal·ik·sē]
(astronomy)
A galaxy whose spectrum displays narrow, high-excitation emission lines.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
NGC 1792 is an emission-line galaxy; its highly luminous far-infrared radiation can be attributed to galactic dust heated by the young stars in its disk.
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