Astronomy and Astrophysics – Astronomy
Scientific paper
Oct 1983
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983pasp...95..700c&link_type=abstract
(Astronomical Society of the Pacific, Symposium on the Renaissance in High-Resolution Spectroscopy - New Techniques, New Frontie
Astronomy and Astrophysics
Astronomy
3
Astronomical Spectroscopy, Galactic Structure, High Resolution, Light (Visible Radiation), Quasars, Ultraviolet Spectroscopy, Absorption Spectra, Galactic Nuclei, Line Spectra, Lyman Alpha Radiation, Magellanic Clouds, Milky Way Galaxy, Seyfert Galaxies, Spectral Resolution, Spiral Galaxies
Scientific paper
This paper reviews recent progress in spectroscopy of galaxies and quasi-stellar objects at resolving powers exceeding 5000. Such observations have provided insight into the nature and structure of the halo of the Galaxy and the Magellanic Clouds, and they have allowed the nuclei of nearby spirals and of Seyfert galaxies to be probed. The bulk of recent research in this subject has been directed at understanding the nature of the material between the earth and quasi-stellar objects which gives rise to the narrow absorption lines which make up the so-called 'Lyman alpha forest'. Current interpretations suggest that some of this material arises in the halos of intervening galaxies, but that the majority of it may never have been processed. Recent results addressing these issues are presented.
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