| |
 |
| Paper: |
Do All Galaxies Have Disks (and are Some Small)? |
| Volume: |
230, Galaxy Disks and Disk Galaxies |
| Page: |
153 |
| Authors: |
Burstein, D.; Saglia, R. P.; Colless, M.; Davies, R. L.; McMahan, R. K.; Wegner, G. |
| Abstract: |
We fit luminosity profiles to a large sample of cluster galaxies chosen to be strongly biased against spiral galaxies. We detect exponential components in 87% of these galaxies, and infer that the remaining cases are consistent with low surface brightness disks contributing less than 10% of the total luminosity. We note various lines of evidence indicating that these exponential components are most rotationally-supported disks, with perhaps more thickened disks in cD galaxies. We suggest that all galaxies possess a disk component, although 20% are not actively forming stars, and a small fraction are too faint to see against a much more luminous bulge component. |
|
|
|
|
|
