| 释义 |
sey·fert galaxy
\¦sēfə(r)t-, ¦sī-\ noun
or seyfert
(-s)
Usage: usually capitalized S
Etymology: after Carl K. Seyfert died 1960 American astronomer
: any of a class of spiral galaxies that have small compact bright nuclei exhibiting variability in light intensity, emission of radio waves, and spectra which indicate hot gases in rapid motion |