The Galactic rotation curve, derived from diffuse nebulae

Details The Galactic rotation curve, derived from diffuse nebulae The Galactic rotation curve, derived from diffuse nebulae

Dec 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985pazh...11..898a&link_type=abstract

(Pis'ma v Astronomicheskii Zhurnal, vol. 11, Dec. 1985, p. 898-905) Soviet Astronomy Letters (ISSN 0360-0327), vol. 11, Nov.-Dec

Astronomy and Astrophysics

Astronomy

Galactic Rotation, Milky Way Galaxy, Nebulae, Radial Velocity, Angular Velocity, Density Wave Model, Distance, Galactic Nuclei, Hydrogen Clouds, Mass Distribution, Oort Cloud

Scientific paper

The rotation curve of the Galaxy θ(R) is constructed with the aid of 178 diffuse nebulae with known radial velocities and photometric distances obtained in a uniform way. Assuming R0 = 8.5 kpc and θ0(R0) = 220 km/s the rotation velocity remains nearly constant for the range of galactocentric distances R = 6 - 18 kpc with the value θ(R) = 220 km/s. The Oort constants A and α for the solar neighbourhood are determined. The observed features of the rotation curve are in accordance with the density wave theory.

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