Ultraviolet observations of NGC 205

Details Ultraviolet observations of NGC 205 Ultraviolet observations of NGC 205

Nov 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990apj...364...87w&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 364, Nov. 20, 1990, p. 87-93.

Astronomy and Astrophysics

Astronomy

18

Dwarf Galaxies, Elliptical Galaxies, Star Formation, Ultraviolet Astronomy, Astronomical Models, Blue Stars, Early Stars, Interstellar Extinction, Iue, Spectral Energy Distribution

Scientific paper

Low-resolution IUE observations of the dwarf elliptical galaxy NGC 205 show that the UV spectral energy distribution 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 are fit with a composite spectrum based on a Miller-Scalo initial mass function, an underlying older population and an extinction based on a SMC-like extinction curve. This fit implies that the total mass of young stars in the galaxy is about 700,000 solar mass, which can be compared to the total mass of Population II stars in the galaxy of about 100 million solar mass.

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