Statistics – Computation
Scientific paper
May 1985
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985afz....22..461k&link_type=abstract
(Astrofizika, vol. 22, May-June 1985, p. 461-472) Astrophysics (ISSN 0571-7132), vol. 22, no. 3, Nov. 1985, p. 272-280. Translat
Statistics
Computation
1
Astronomical Spectroscopy, Computational Astrophysics, Galactic Rotation, Hydroxyl Emission, Milky Way Galaxy, Absorption Spectra, Angular Velocity, Astrometry, Emission Spectra, Line Spectra, Molecular Clouds, Velocity Distribution
Scientific paper
The rotation curve of the Galaxy is plotted in the range of galactocentric distances up to 16 kpc using OH absorption lines to determine distances. This method is briefly explained along with the method for determining the rotation curve. Three characteristic regions on the curve are determined, one with radius less than 5 kpc, one between 5 and 12 kpc, and the other beyond 12 kpc. The properties of these regions are compared with other data on the kinematics of the Galaxy. The OH rotation curve is compared with the tangential OH rotation curve and the H I rotation curve. The distance of the sun from the center of the Galaxy is estimated from the position of the central peak of the rotation curve as about 8.5 kpc. The mass of the Galaxy within a radius of 100 kpc is calculated from the distribution of the velocity of rotation as about 3 x 10 to the 12th solar masses.
Iurevich L. V.
Kolesnik Igor G.
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