The triple system Gliese 815 /Furuhjelm 54/ - an astrometric study

Details The triple system Gliese 815 /Furuhjelm 54/ - an astrometric study The triple system Gliese 815 /Furuhjelm 54/ - an astrometric study

Sep 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980aj.....85.1270r&link_type=abstract

Astronomical Journal, vol. 85, Sept. 1980, p. 1270-1273.

Other

4

Astrometry, Reference Stars, Star Clusters, Stellar Motions, Stellar Spectra, Astronomical Photography, Orbital Mechanics, Parallax

Scientific paper

A total of 332 exposures of Gliese 815 were measured and analyzed for its position, proper motion, parallax, and orbit. Its absolute parallax is 0.0692±0.0029 arcsec. The astrometric orbit of the wide pair, the visual observations, and the spectroscopic orbit of the close pair yield masses MAa = 0.9Msun, MAb = O.6Msun, and MB =0.5Msun. Astrometric constants were determined for 32 other stars in the region, including BD+39°4400. The absolute parallax of the latter is 0.0200 ± 0.0052 arcsec. Two other reference stars, BD+39°4403 and AO 584, were discovered to be a common proper motion pair.

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