NASA/IPAC EXTRAGALACTIC DATABASE
Date and Time of the Query: 2019-04-20 T22:01:07 PDT
Help | Comment | NED Home

For refcode 1991ApJ...379...89S:
Retrieve 57 NED objects in this reference.
Please click here for ADS abstract

NED Abstract

Copyright by American Astronomical Society. Reproduced by permission
1991ApJ...379...89S THE DARK MATTER CONTENT OF SPIRAL GALAXIES PAOLO SALUCCI AND KEITH M. ASHMAN Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD 21218 AND MASSIMO PERSIC Osservatorio Astronomico di Trieste, via G.B. Tiepolo II, 1-34131, Trieste, Italy Received 1990 November 29; accepted 1991 March 28 ABSTRACT We present a new technique for calculating the fraction of dark material within the optical radius of spiral galaxies. The method employs the well-established observational result that spiral galaxies have similar central surface brightnesses, as well as published stellar synthesis evolutionary models, color-magnitude relations and optical rotation curves. No assumptions about the dark matter distribution are necessary. We find that the ratio of disk-to-dynamical mass within the optical radius increases roughly as L^0.4^_B_. This is in good agreement with the results of Persic and Salucci which are derived from independent considerations. Subject headings: dark matter - galaxies: internal motions - galaxies: photometry - galaxies: stellar content
Retrieve 57 NED objects in this reference.
Please click here for ADS abstract

Back to NED Home