The rotation curve of NGC 488

Details The rotation curve of NGC 488 The rotation curve of NGC 488

Mar 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980aj.....85..226p&link_type=abstract

Astronomical Journal, vol. 85, Mar. 1980, p. 226-229.

Astronomy and Astrophysics

Astronomy

11

Galactic Rotation, Spiral Galaxies, Galactic Nuclei, Telescopes

Scientific paper

The rotation curve of NGC 488 has been measured out to a radius of 20 kpc, at which point the velocity is 363 km/s and continuing to increase with radius. This rotational velocity is the largest known for an Sb galaxy. For a mass model based on the thin-disk approximation of Kuzmin the mass and mass-luminosity interior to 20 kpc are 4.0 x 10 to the 11th solar masses and not less than 3.6, respectively. Exterior to the nuclear region, the mass-luminosity ratio shows only a gentle increase with radius.

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