OB associations


dcterms modified equal to or less than 2020-11-05T20:24:25.080Zequal to or more than 2020-11-05T20:24:25.080Z
http://astrothesaurus.org/uat/1582 original
1140 original
definition A loosely bound grouping of O and B stars that typically stretches up to several hundred light-years and may contain between a dozen and several hundred O stars and B stars. The members of an OB association are young and of roughly the same age. OB associations dissipate in a few tens of millions of years.
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contributor AAS_Frey.Katie_Admin original