Radio Star Astrometry With Connected Element Interferometers

Details Radio Star Astrometry With Connected Element Interferometers Radio Star Astrometry With Connected Element Interferometers

Dec 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005aas...20711704j&link_type=abstract

American Astronomical Society Meeting 207, #117.04; Bulletin of the American Astronomical Society, Vol. 37, p.1356

Astronomy and Astrophysics

Astronomy

Scientific paper

We present the latest results from our program of radio star observations using the MERLIN and VLA+Pie Town interferometer arrays. These observations are part of a long-term (since 1978) program to obtain accurate astrometric radio positions, parallaxes, and proper motions for 50 stars. Radio star astrometry can be used to connect the current realization of the International Celestial Reference Frame (ICRF) as defined by VLBI positions of extragalactic objects to future optical reference frames (e.g. that defined by the SIM PlanetQuest mission). We also compare our radio positions and proper motions to those determined by HIPPARCOS.

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