FGS observations of two high-velocity stars

Details FGS observations of two high-velocity stars FGS observations of two high-velocity stars

Jul 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997balta...6..119o&link_type=abstract

Baltic Astronomy, vol. 6, p. 119

Astronomy and Astrophysics

Astronomy

Stellar Motions, Hubble Space Telescope, Star Distribution, Stellar Parallax, Trigonometric Functions, Astrometry, Spatial Distribution, Galaxies

Scientific paper

The HST Fine Guidance System has been used to obtain precise astrometry in the fields of two stars of large space velocity: R 50 = G 166-37 and W 624 - G 16-25. The measures indicate a relative trigonometric parallax for R50 of 4.0 mas, which implies a space velocity in the galactocentric rest frame of 467 km/s. The derived parallax for W 624 is probably about 3.0 mas, but there is a large uncertainty.

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