Age and dimensions of star complexes
Journal Article
·
· Sov. Astron. Lett. (Engl. Transl.); (United States)
OSTI ID:5961203
The OB association in the Galaxy, the LMC, M31, and M33 are typically 200--300 pc in diameter; they often represent groupings of several components. Star complexes are twice the size of OB associations, on the average; the presence of Cepheids and O stars implies that the members of complexes may have an age dispersion of up to 6 x 10/sup 7/ yr. Within complexes and large associations, denser regions roughly-equal100 pc across with roughly-equal1 x 10/sup 7/ yr age dispersion may occur; their stars presumably originated from a common giant molecular cloud. Some complexes show evidence of a discrete age distribution, perhaps testimony to star formation through Parker instability.
- Research Organization:
- Shternberg Astronomical Institute, Moscow, USSR
- OSTI ID:
- 5961203
- Journal Information:
- Sov. Astron. Lett. (Engl. Transl.); (United States), Journal Name: Sov. Astron. Lett. (Engl. Transl.); (United States) Vol. 8:6; ISSN SALED
- Country of Publication:
- United States
- Language:
- English
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