Maximum mass of objects that constitute unseen disk material

Details Maximum mass of objects that constitute unseen disk material Maximum mass of objects that constitute unseen disk material

Mar 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985apj...290...15b&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 290, March 1, 1985, p. 15-20.

Other

85

Binary Stars, Disk Galaxies, Galactic Structure, Milky Way Galaxy, Stellar Mass, Astronomical Models, Interstellar Matter, Mass Distribution, Orbital Velocity, Stellar Evolution

Scientific paper

It is suggested that the mass of the individual unseen 'disk things' which furnish unseen mass satisfies an inequality that is based on the demonstrated existence of a large number of wide binary stars in the Galaxy whose projected separations are as large as 0.1 pc. Since these binaries are weakly bound, with orbital velocities of 0.3 km/sec and periods of the order of 1 million years, they can be disrupted by passing stars or other pointlike objects. This implies that the mass of the unseen disk objects, which provide about half the local mass density, must be less than 2 solar masses.

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