Mass-to-light ratios of binary galaxies. I - Radial velocities.

Details Mass-to-light ratios of binary galaxies. I - Radial velocities. Mass-to-light ratios of binary galaxies. I - Radial velocities.

Jun 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987apjs...64..411s&link_type=abstract

Astrophysical Journal Supplement Series (ISSN 0067-0049), vol. 64, June 1987, p. 411-416. Research supported by the Observatorio

Physics

Optics

18

Emission Spectra, Galaxies, Mass To Light Ratios, Radial Velocity, Spectrum Analysis, Absorption Spectra, Cassegrain Optics, Gratings (Spectra), Line Spectra, Spectrograms

Scientific paper

A sample of 48 Southern Hemisphere galaxy pairs is characterized on the basis of (1) radial velocities calculated from intermediate-dispersion spectrograms obtained at 400-650 nm using the 1.0-m, 3.6-m, and 4.0-m telescopes at CTIO, (2) BV multiple-aperture photoelectric photometry obtained using the 0.9-m and 1.5-m telescopes at CTIO, and (3) Monte Carlo numerical simulations to estimate the mass/light ratios. The data and results are presented in extensive tables and graphs and discussed in exhaustive detail. The M/L(visual) values for Sc galaxies are found to range from 12 to 32, with most likely value 21 + or - 5 solar units; for ellipticals the range is 22-60 and the most likely value is 39 + or - 9 (assuming H0 = 50).

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