Astronomy and Astrophysics – Astronomy
Scientific paper
Feb 1983
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983azh....60...20a&link_type=abstract
(Astronomicheskii Zhurnal, vol. 60, Jan.-Feb. 1983, p. 20-25) Soviet Astronomy (ISSN 0038-5301), vol. 27, Jan.-Feb. 1983, p. 13-
Astronomy and Astrophysics
Astronomy
Astronomical Spectroscopy, Galactic Rotation, Interacting Galaxies, Emission Spectra, H Alpha Line, Mass To Light Ratios, Radial Velocity, Red Shift
Scientific paper
Results are presented of an investigation of the interacting pairs of galaxies VV 48 and VV 219 based on spectroscopic observations in the red region with approximately 90 A/mm dispersion using the 125 cm reflector of the Shternberg Crimean station. Rotation curves of the components derived from the H-alpha and N II forbidden emission lines show that in VV 219 the brighter component, NGC 4568, has a rotation curve with a long linear section extending 5 kpc from the nucleus, whereas the rotation curve of the companion, NGC 4567, has a well-defined turnover. The peak rotational velocities of the components, corrected for projection, are found to be 125 and 55 km/sec, respectively. In VV 48 the primary is determined to have a linear rotation curve to 7 kpc from the nucleus. In addition, calculations are presented of limits on the mass and mass/luminosity ratio of each component in the two systems.
Arkhipova V. P.
Esipov Valentine F.
Yarovenko N. V.
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