Astronomy and Astrophysics – Astrophysics
Scientific paper
Mar 1989
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989apj...338..752k&link_type=abstract
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 338, March 15, 1989, p. 752-760.
Astronomy and Astrophysics
Astrophysics
45
Cosmic Gases, Mass To Light Ratios, Radial Velocity, Spiral Galaxies, Absorption Spectra, Brightness Distribution, Dark Matter, Elliptical Galaxies, Emission Spectra, Galactic Bulge
Scientific paper
The mass distribution of the Sombrero Galaxy, NGC 4594, is calculated in order to investigate the suspicion that the rotational velocity of the galactic gas does not measure the circular velocity in the galaxy. It is shown that the H II rotation velocities are much less than circular in the central 35 arcsec of the galaxy, and that the suspicion is correct. Thus, the H II rotation velocities cannot be used to measure the mass distribution. The absorption-line rotation curve is used to derive the mass distribution, and it is found that the M/L ratio is nearly constant. It is concluded that the visible matter is self-gravitating at least in the central 180 arcsec.
Kormendy John
Westpfahl David J.
No associations
LandOfFree
Noncircular gas velocities and the radial dependence of mass-to-light ratio in NGC 4594 (the Sombrero Galaxy) does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Noncircular gas velocities and the radial dependence of mass-to-light ratio in NGC 4594 (the Sombrero Galaxy), we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Noncircular gas velocities and the radial dependence of mass-to-light ratio in NGC 4594 (the Sombrero Galaxy) will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1801603