Dwarf spheroidal galaxies and the mass of the neutrino

Details Dwarf spheroidal galaxies and the mass of the neutrino Dwarf spheroidal galaxies and the mass of the neutrino

Apr 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992apj...389l...9g&link_type=abstract

Astrophysical Journal, Part 2 - Letters (ISSN 0004-637X), vol. 389, April 10, 1992, p. L9-L11.

Astronomy and Astrophysics

Astrophysics

33

Dwarf Galaxies, Galactic Structure, Neutrinos, Particle Mass, Dark Matter, Hubble Constant, Milky Way Galaxy, Missing Mass (Astrophysics), Spheroids

Scientific paper

It is argued that neutrinos cannot provide the missing mass in Draco and Ursa Minor, since for reasonable neutrino mass phase-space limits would then require very large core radii and masses for these dwarfs, which would make their dynamical friction decay times in the Galactic halo significantly shorter than a Hubble time. These limits are insensitive to assumptions about the anisotropy of the neutrino distribution.

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