Spiral structure and gas motion in M81

Details Spiral structure and gas motion in M81 Spiral structure and gas motion in M81

Dec 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982azh....59.1055b&link_type=abstract

(Astronomicheskii Zhurnal, vol. 59, Nov.-Dec. 1982, p. 1055-1061) Soviet Astronomy (ISSN 0038-5301), vol. 26, Nov.-Dec. 1982, p.

Astronomy and Astrophysics

Astronomy

3

Density Wave Model, Galactic Rotation, Spiral Galaxies, Density Distribution, Gas Flow, Gravitational Fields, H Ii Regions, Radial Velocity

Scientific paper

From the two-component spiral-structure model proposed by Marochnik, Mishurov, and Suchkov (1972), the spiral-arm geometry in the galaxy M81 is calculated and the density-wave parameters are evaluated: the pattern speed is approximately 20 km/sec kpc and the effective rotating component has a surface density of about 50 solar masses/sq pc. The nonlinear gas flow in the gravitational field of the arms is calculated for these parameters. Comparison with the observed radial distribution of H II regions, the radial-velocity profile of the gas along the minor axis, and the gas density profiles in the arms indicates that the spiral gravitational-force amplitude F is approximately 5 percent at 8-kpc distance from the center of the system.

Affiliated with

Also associated with

No associations

Rating

Spiral structure and gas motion in M81 does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Spiral structure and gas motion in M81, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Spiral structure and gas motion in M81 will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-928740