The position of the radio/optical emission from the stars HR 1099 and UX Ari

Details The position of the radio/optical emission from the stars HR 1099 and UX Ari The position of the radio/optical emission from the stars HR 1099 and UX Ari

Jul 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985aj.....90.1343j&link_type=abstract

Astronomical Journal (ISSN 0004-6256), vol. 90, July 1985, p. 1343-1348. Sponsorship: Bundesministerium für Forschung und Techno

Astronomy and Astrophysics

Astronomy

24

Astrometry, Binary Stars, Radio Stars, Star Distribution, Optical Emission Spectroscopy, Position (Location), Quasars

Scientific paper

The radio and optical positions of the stars HR 1099 and UX Ari have been measured at nearby epochs. The radio positions are referred to background quasars, and the optical positions are on the FK4 system. The radio and optical coordinates agree within the 0arcsec.05 accuracy of the optical measurements, except for a discrepancy of 0arcsec.27±0arcsec.06 in the right ascension of HR 1099. The latter may result from the combined effects of local deviations in the two reference frames, atmospheric effects, or differences in source structure at radio and optical wavelengths. The radio and optical measurements of the proper motions agree well.

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