Everything you ever wanted to know about the ultraviolet spectra of star-forming galaxies but were afraid to ask

Details Everything you ever wanted to know about the ultraviolet spectra of star-forming galaxies but were afraid to ask Everything you ever wanted to know about the ultraviolet spectra of star-forming galaxies but were afraid to ask

Jan 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993egte.conf...33k&link_type=abstract

In NASA. Ames Research Center, The Evolution of Galaxies and Their Environment p 33 (SEE N93-26706 10-90)

Astronomy and Astrophysics

Astronomy

Compact Galaxies, Dwarf Galaxies, Emission Spectra, Iue, Seyfert Galaxies, Starburst Galaxies, Stellar Evolution, Stellar Spectra, Ultraviolet Astronomy, Ultraviolet Spectra, Color, Energy Distribution, Morphology, Ultraviolet Radiation

Scientific paper

We present ultraviolet spectra of 143 star-forming galaxies of different morphological types and activity classes including S0, Sa, Sb, Sc, Sd, irregular, starburst, blue compact, blue compact dwarf, Liner, and Seyfert 2 galaxies. These IUE spectra cover the wavelength range from 1200 to 3200 A and are taken in a large aperture (10 x 20 inch). The ultraviolet spectral energy distributions are shown for a subset of the galaxies, ordered by spectral index, and separated by type for normal galaxies, Liners, starburst galaxies, blue compact (BCG) and blue compact dwarf (BCDG) galaxies, and Seyfert 2 galaxies. The ultraviolet spectra of Liners are, for the most part, indistinguishable from the spectra of normal galaxies. Starburst galaxies have a large range of ultraviolet slope, from blue to red. The star-forming galaxies which are the bluest in the optical (BCG and BCDG), also have the 'bluest' average ultraviolet slope of beta = -1.75 +/- 0.63. Seyfert 2 galaxies are the only galaxies in the sample that consistently have detectable UV emission lines.

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