On the expansion of stellar association Per OB2

Details On the expansion of stellar association Per OB2 On the expansion of stellar association Per OB2

Jul 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999ap.....42..247m&link_type=abstract

Astrophysics, Volume 42, Issue 3, pp.247-254

Astronomy and Astrophysics

Astrophysics

1

Scientific paper

The analysis of the proper motions of bright members of the Per OB2 association on the basis of Hipparcos high-accuracy astromethc observations is presented. The existence of two different subgroups of OB-stars in the Per OB2 association that are in the state of expansion is considered. The expansion ages are calculated as 1.3 and 1.9×106 years. The membership of the observed OB-stars to these subgroups is considered.

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