Is there nonluminous matter in dwarf spheroidal galaxies

Details Is there nonluminous matter in dwarf spheroidal galaxies Is there nonluminous matter in dwarf spheroidal galaxies

Mar 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983apj...266l..17f&link_type=abstract

Astrophysical Journal, Part 2 - Letters to the Editor, vol. 266, Mar. 1, 1983, p. L17-L20.

Astronomy and Astrophysics

Astrophysics

199

Cosmology, Dwarf Galaxies, Galactic Evolution, Galactic Structure, Mass To Light Ratios, Luminosity, Spheroids

Scientific paper

Evidence from tidal masses indicates that mass-to-light ratios of dwarf spheroidal galaxies are roughly one order of magnitude larger than those of globular clusters. The authors tentatively infer that dwarf spheroidal galaxies contain large amounts of nonluminous matter and in this regard resemble bigger galaxies. The luminosity profiles of dwarf spheroidal galaxies are also shown to be consistent with exponential laws, possibly indicating a closer evolutionary link to spiral-irregular galaxies than to elliptical galaxies.

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