Rotation curves and mass estimates for five interacting galaxy pairs

Details Rotation curves and mass estimates for five interacting galaxy pairs Rotation curves and mass estimates for five interacting galaxy pairs

Feb 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986azh....63...16a&link_type=abstract

(Astronomicheskii Zhurnal, vol. 63, Jan.-Feb. 1986, p. 16-24) Soviet Astronomy (ISSN 0038-5301), vol. 30, Jan.-Feb. 1986, p. 11-

Astronomy and Astrophysics

Astronomy

4

Astrometry, Galactic Clusters, Galactic Rotation, Interacting Galaxies, Mass To Light Ratios, Radial Velocity, Astronomical Spectroscopy, Orbital Elements

Scientific paper

Radial velocities have been measured for the components of five interacting double galaxies (VV 41, 50, 254, 330, 810) on spectrograms taken at the prime focus of the 6-m telescope. A rotation curve is established for each galaxy and in most cases is 'flat' (not reaching a turnover), with a comparatively low angular velocity in the solid-body rotation zone. Decidedly noncircular motions are found only in the nuclear region of the bright component of VV 50. Mass determinations indicate an average mass/luminosity ratio f = 4.2 for the 10 paired galaxies. The components of the individual systems have a mass ratio of 3-18.

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