HIPPARCOS Astrometry and Radio Mapping of Peculiar Binary Systems

Details HIPPARCOS Astrometry and Radio Mapping of Peculiar Binary Systems HIPPARCOS Astrometry and Radio Mapping of Peculiar Binary Systems

Aug 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997esasp.402..405v&link_type=abstract

Proceedings of the ESA Symposium `Hipparcos - Venice '97', 13-16 May, Venice, Italy, ESA SP-402 (July 1997), p. 405-408

Astronomy and Astrophysics

Astronomy

12

Scientific paper

We report Hipparcos observations of a number of binary systems, symbiotic stars and bright long period binaries, which are known also for being radio sources. In these systems the matter ejected from the component(s) is generally made visible in the radio by the ionizing radiation of the hot component of the system. Shocks from wind collision may also play a role, especially in those objects which are known for being X-ray sources. Hipparcos has shown that in most cases the astrometric position is very close to the core of the radio source. In particular, in the case of multiple radio sources, the Hipparcos position is close to the central source of CH Cyg, to the brightest source of AG Dra, and to the SiO maser emission of R Aqr.

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