On the mass to light ratios of dwarf spheroidal galaxies

Details On the mass to light ratios of dwarf spheroidal galaxies On the mass to light ratios of dwarf spheroidal galaxies

Jul 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989mtlr.book.....c&link_type=abstract

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Computer Science

Dwarf Galaxies, Mass To Light Ratios, Milky Way Galaxy, Stellar Luminosity, Dark Matter, Dwarf Stars, Mass

Scientific paper

Previous estimates of the mass to light ratios of local dwarf spheroidal galaxies have indicated they form an inhomogeneous population. A tidal equation is used and it is shown that if it is assumed that all of these dwarf galaxies are on essentially similar orbits around the Milky Way (rather than having perigalactica comparable with their present distances), values can be derived of M/Lv which have a much smaller spread and no longer have correlations with luminosity and distance. It is then possible to maintain the view that either all of these dwarf galaxies contain dark matter or none of them do, with the main determining factor being the currently uncertain mass of the Milky Way.

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