The rotation and mass of the spiral galaxies NGC 7339 and NGC 7537

Details The rotation and mass of the spiral galaxies NGC 7339 and NGC 7537 The rotation and mass of the spiral galaxies NGC 7339 and NGC 7537

Dec 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980pazh....6..687k&link_type=abstract

(Pis'ma v Astronomicheskii Zhurnal, vol. 6, Nov.-Dec. 1980, p. 687-690.) Soviet Astronomy Letters, vol. 6, Nov.-Dec. 1980, p. 36

Astronomy and Astrophysics

Astronomy

1

Astronomical Spectroscopy, Galactic Rotation, Mass Distribution, Spiral Galaxies, Astronomical Catalogs, Galactic Structure, Interstellar Gas, Luminous Intensity, Radial Velocity, Star Distribution, Velocity Distribution

Scientific paper

Observations of spiral galaxies NGC 7339 and NGC 7537, both of which are members of double systems, are reported. The rotation curves of the two galaxies are similar in form and have long plateaus. No evidence has been found for appreciable noncircular gas motions in the galaxies. The mass/luminosity is small in each galaxy; on the average it is less than the value M/LB = 7 (converted to H = 75 km/sec Mpc) obtained for type Sbc-Sc galaxies within their Holmberg radius. It is also found that M/LB is lower for the inner than for the outer regions, suggesting that the star composition varies along the galaxy radius.

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