Gravitational redshift determinations for white dwarfs in common proper-motion binaries

Details Gravitational redshift determinations for white dwarfs in common proper-motion binaries Gravitational redshift determinations for white dwarfs in common proper-motion binaries

Jul 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991apj...375..674w&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 375, July 10, 1991, p. 674-678.

Other

29

Binary Stars, Red Shift, Stellar Gravitation, Stellar Motions, White Dwarf Stars, Mass Distribution, Stellar Mass

Scientific paper

Gravitational redshifts determined using the 5 m Hale telescope are given for 23 white dwarfs belonging to common proper-motion binary systems and additional velocities are presented for 14 pairs found not to comprise physical binaries or that have unmeasurable velocities. The mass distribution for the common proper-motion pairs using the gravitational redshifts and the mass-radius relation peaks strongly near 0.55 solar mass, and the main details of the shape agree with earlier determinations using other methods although a problem remains with contamination with optical pairs. The redshifts and radii of a subset of these objects with known distances are consistent with the mass-radius relation for white dwarfs.

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