Ages of the disks of S0 galaxies
Journal Article
·
· Astrophys. J.; (United States)
A photometric system using a broad-band color combined with a line strength index is employed to distinguish age differences from metallicity differences between the bulges and disks of S0 galaxies. A color difference independent of metallicity changes of about ..delta..(U-V) = 0.10 is found for the sample of galaxies observed here. Several S0 galaxies have absorption line strengths that indicate the disks are as metal rich as the most luminous elliptical galaxies. It is concluded that the disks of S0 galaxies are probably younger than the bulges, but the distinction between a younger turnoff and residual star formation cannot be made.
- Research Organization:
- Yale University Observatory
- OSTI ID:
- 5838460
- Journal Information:
- Astrophys. J.; (United States), Journal Name: Astrophys. J.; (United States) Vol. 268:1; ISSN ASJOA
- Country of Publication:
- United States
- Language:
- English
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