Gas motion and mass distribution in the SC galaxy NGC 157

Details Gas motion and mass distribution in the SC galaxy NGC 157 Gas motion and mass distribution in the SC galaxy NGC 157

Apr 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981pazh....7..131z&link_type=abstract

(Pis'ma v Astronomicheskii Zhurnal, vol. 7, Mar. 1981, p. 131-135.) Soviet Astronomy Letters, vol. 7, Mar.-Apr. 1981, p. 73-75.

Astronomy and Astrophysics

Astronomy

8

Astronomical Spectroscopy, Cosmic Gases, Gas Dynamics, Mass Distribution, Spiral Galaxies, Flow Velocity, Galactic Rotation, Galactic Structure, Gas Flow, Rotating Disks

Scientific paper

Spectroscopic measurements of gas velocities in the spiral galaxy NGC 157 are reported, which indicate the presence of noncircular motions, the prevalence of almost solid-body rotations out to 8-9 kpc from the center, and high M/L ratios along the periphery of the galaxy. In addition, a model comprising two thin, flat exponential disks is constructed from the rotation curve and Blackman's (1979) photometry.

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