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| physical object > natural object > celestial body > collection of stars > galaxy > emission line galaxy > Markarian galaxy | 
| Markarian galaxy comparison table | ||
| Subject | has definition | is a kind of | 
|---|---|---|
| emission line galaxy | galaxy | |
| Markarian galaxy | A galaxy in Markarian's list of galaxies with abnormally strong ultraviolet continua. They have broad emission lines arising in a bright, semi-stellar nucleus. Markarian 231 is the most luminous galaxy known if it is at its Hubble distance. | emission line galaxy | 
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