On the expansion of stellar association Per OB2

descriptionPublicationkeyboard_double_arrow_right Article 01 Jul 1999 English Publisher:Springer Science and Business Media LLCJournal:Astrophysics, volume 42, pages 247-254 (issn: 0571-7256, eissn: 1573-8191,

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Authors: L. V. Mirzoyan; V. V. Hambaryan; A. A. Akopian; A. V. Poghosyan; G. N. Salukvadze;

doi: 10.1007/bf02700754

On the expansion of stellar association Per OB2

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Abstract

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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