Parallax studies of four selected fields

Details Parallax studies of four selected fields Parallax studies of four selected fields

Feb 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982aj.....87..428r&link_type=abstract

Astronomical Journal, vol. 87, Feb. 1982, p. 428-432.

Astronomy and Astrophysics

Astronomy

3

Astrometry, Astronomical Photography, Reference Stars, Star Distribution, Stellar Parallax, Binary Stars, Orbits, Stellar Magnitude, Stellar Spectra, White Dwarf Stars

Scientific paper

Astrometric studies have been completed for four central stars Wolf 294, 39 Com, Case 2, and Vega - and selected reference stars in each of those regions. The parallax of Wolf 294 was measured as 0.1806 + or - 0.0033 arcsec. 39 Com is a visual/astrometric binary with an estimated period of 125 yr and a parallax of 0.0297 + or - 0.0044 arcsec. C 2 was measured as a white dwarf from a Warner and Swasey Observatory spectral survey; its white dwarf status is confirmed by its parallax of 0.0186 + or - 0.0109 arcsec. Vega's parallax was measured as 0.1243 + or - 0.0049 arcsec; a small apparent nonrandom distribution in the residuals is most likely an error from the neutral density filter used for magnitude reduction of the central star.

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