Physics
Scientific paper
May 1997
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997aipc..408..267s&link_type=abstract
The ultraviolet universe at low and high redshift. AIP Conference Proceedings, Volume 408, pp. 267-278 (1997).
Physics
Spectroscopy And Spectrophotometry, Ultraviolet, Characteristics And Properties Of External Galaxies And Extragalactic Objects, Radio Galaxies
Scientific paper
I discuss recent progress in the observational aspects of distant, faint galaxy imaging and spectroscopy in the emitted ultraviolet region. Powerful radio galaxies illustrate unusual extended structures, visible by collimated gaseous emission and the scattered light from a `hidden' nucleus. Some of the weaker radio E galaxies are observed to radiate simply as a collection of old stars; analysis of these two of these spectra indicate a population that's aged >=3.5 Gyr and constrains the time scale for contemporary cosmologies. Thirdly, spectroscopic studies of a few prototypical ``Lyman-limit'' starburst galaxies at z>2.6 indicate a contributing hot range of stellar types (O-B stars at λ<2000 Å) and a likely range of metal-abundances in the O-star winds and the galaxies' spectroscopically prominent spectral interstellar media.
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