HIPPARCOS based astrometric analysis of M 3 and M 92 fields: optical identification of X-ray and radio sources, space motions of globular clusters M 3 and M 92 and a galactic orbit of the sdB star PG 1716+426
Abstract
We present positions and proper motions with respect to the Hipparcos system of stars in the fields of the globular clusters M 3 and M 92. The data were used for the optical identification of X-ray and radio sources, a new determination of the absolute proper and space motions of the globular clusters M 3 and M 92. Moreover, we derived an accurate proper and space motion of the sdB star PG 1716+426, located in the M 92 field.
- Publication:
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Astronomy and Astrophysics
- Pub Date:
- December 1998
- Bibcode:
- 1998A&A...340..305G
- Keywords:
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- STARS: INDIVIDUAL: PG 1716+426;
- GLOBULAR CLUSTERS: INDIVIDUAL: M 3;
- GLOBULAR CLUSTERS: INDIVIDUAL: M 92