Astronomy and Astrophysics – Astronomy
Scientific paper
Aug 1994
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994aj....108..629f&link_type=abstract
The Astronomical Journal, vol. 108, no. 2, p. 629-633
Astronomy and Astrophysics
Astronomy
5
Galactic Rotation, Interstellar Extinction, Solar Neighborhood, Stellar Magnitude, Stellar Motions, Velocity Distribution, Distance, Stellar Composition, Stellar Luminosity
Scientific paper
A total interstellar extinction in the B and V bandpasses is derived from the difference between the photometric and kinematic distances of a set of 2.3x105 stars in a galactic layer of 300 pc halfwidth and up to a distance of 600 pc from the Sun. A mean reddening is derived over the galactic midplane and a continuous region similar to that of the Lindblad Ring is delineated by a color excess of 0.11 mag. Rough values of 180 pc for the scale height, an internal velocity dispersion of 7 plus or minus 1 km/s, a surface density of 3 plus or minus 2 solar mass pc-2 and a variation in the potential depth of plus or minus 4x106 solar mass are derived from the difference between the inner and outer regions of the Lindblad Ring.
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