UV observations of NGC 205
Abstract
Low resolution IUE observations of the dwarf elliptical galaxy NGC 205 show that the UV spectral energy distribution (SED) of the galaxy is relatively flat. Spectra centered on the nucleus and on a region north of the nucleus show evidence of recent bursts of star formation which contribute strongly to the UV spectral energy distribution. The UV spectra was fit with a composite spectrum based on a Miller-Scalo initial mass function, an underlying older population (modelled using the UV spectrum of 47 Tuc), and an extinction based on a SMC-like extinction cure. This fit implies that the total mass of young stars (with M equal to or greater than 1 solar mass) in the galaxy is approx. 7x10(5) solar mass, which can be compared to the total mass of globular cluster like stars in the galaxy of approx. 8x10(7) solar mass.
- Publication:
-
Final Report Washington Univ
- Pub Date:
- November 1989
- Bibcode:
- 1989uwsa.rept.....W
- Keywords:
-
- Dwarf Galaxies;
- Elliptical Galaxies;
- Spectral Energy Distribution;
- Star Formation;
- Ultraviolet Spectra;
- Galactic Nuclei;
- Interstellar Extinction;
- Iue;
- Stellar Spectra;
- Astronomy