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Unformatted text preview: Hercules ) These appear to have affinities in a tuning-fork pattern: with concentration generally increasing leftward. However, some poor clusters do have cD galaxies, perhaps the result of runaway merging. The Bautz-Morgan classification is based on brightness contrast between first- and second-ranked galaxies (i.e. the slope of the luminosity function at the bright end): I central cD galaxy (A2199) II intermediate E/cD (Coma) III no dominant galaxy (Virgo, Hercules) Intermediate stages I-II,II-II are recognized....
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This note was uploaded on 11/10/2011 for the course AST AST1002 taught by Professor Emilyhoward during the Fall '10 term at Broward College.
- Fall '10