Non-linearity of the Tully-Fisher relation

Details Non-linearity of the Tully-Fisher relation Non-linearity of the Tully-Fisher relation

Jan 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991mnras.248..325p&link_type=abstract

Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 248, Jan. 15, 1991, p. 325-327. Research supported by S

Statistics

Computation

14

Dark Matter, Galactic Rotation, Nonlinear Equations, Spiral Galaxies, Abundance, Computational Astrophysics, Galactic Structure, Luminosity

Scientific paper

A systematic variation of the dark matter abundance in spiral galaxies, previously reported (Persic and Salucci, 1990), accounts for the observed nonlinearity of the Tully-Fisher relation. Increasing proportions of dark mass at low luminosities, as revealed by optical rotation curves, make faint galaxies shift to higher rotation velocities for a given luminosity, thus inducing a curvature in the velocity-luminosity correlation.

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