Rotation, mass and physical conditions in the nucleus of the spiral galaxy NGC 7537.
Abstract
NGC 7537 was investigated on the basis of two spectrograms obtained with the 125-cm ZTE telescope of the Shternberg Institute of Astronomy. The mass-luminosity ratio of 4.2 is less than the average (7) for Sbc/Sc galaxies. It is shown that the nucleus radius far exceeds the 5 pc derived from the effective volume occupied by the gas. The galaxy is located far from the regions in which collisional ionization (e.g., supernova remnants) has been observed. The data justify the inclusion of NGC 7537 in the group of normal galaxies with emission lines which come close to the faintest Seyfert galaxies of type 2.
- Publication:
-
Bolgarska Akademiia Nauk Doklady
- Pub Date:
- 1983
- Bibcode:
- 1983BlDok..36..717P
- Keywords:
-
- Disk Galaxies;
- Galactic Nuclei;
- Galactic Rotation;
- Mass To Light Ratios;
- Spiral Galaxies;
- Astrophysics;
- Emission Spectra;
- Galactic Structure;
- Interstellar Gas;
- Astrophysics;
- Spiral Galaxies:Nuclei