Astronomy and Astrophysics – Astrophysics
Scientific paper
Nov 1986
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986a%26a...168...49v&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 168, no. 1-2, Nov. 1986, p. 49-56.
Astronomy and Astrophysics
Astrophysics
10
Galactic Evolution, Mass Distribution, Radio Spectra, Rotating Disks, Spectrum Analysis, Spiral Galaxies, Astronomical Spectroscopy, Mass To Light Ratios
Scientific paper
The mass distribution in the stellar disk of the early-type highly inclined galaxy NGC 4594 is derived based on interpretation of the observed ring-like distribution of HI as tightly wound spiral arms. Results indicate a local surface density in the stellar disk at a galactocentric distance r = 15 kpc of about 40-50 solar masses/sq pc, a disk mass of 1.14 x 10 to the 11th solar masses, and an upper limit of 10 for the average mass over luminosity ratio. The average mass to luminosity ratio for the spheroid is shown to increase from about 5 at r = 10 kpc to about 6 at r = 20 kpc. Results suggest that the stellar disk of this early type spiral resembles those of later type galaxies.
Shane William Whitney
van der Burg G.
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