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Galaxy cluster classification scheme From Wikipedia, the free encyclopedia
The Bautz–Morgan classification was developed in 1970 by Laura P. Bautz and William Wilson Morgan to categorize galaxy clusters based on their morphology.[1] It defines three main types: I, II, and III. Intermediate types (I-II, II-III) are also allowed. A type IV was initially proposed, but later redacted before the final paper was published.[2]
Example | Type | Notes | |
---|---|---|---|
Abell 2199 | Type I | ||
Abell S740 | Type I-II | ||
Coma Cluster | Type II | ||
Abell 1689 | Type II-III | ||
Virgo Cluster | Type III | ||
Type IIIS | |||
Type IIIE | |||
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