Absorption lines in the spectra of distant objects

Details Absorption lines in the spectra of distant objects Absorption lines in the spectra of distant objects

Oct 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980srst.coll..215b&link_type=abstract

In NASA. Marshall Space Flight Center Sci. Res. with the Space Telescope p 215-240 (SEE N80-22130 12-88)

Mathematics

Logic

11

Absorption Spectra, Galaxies, Hubble Space Telescope, Quasars, Absorption Spectroscopy, Cosmology, Galactic Clusters, Galactic Evolution, Red Shift

Scientific paper

Studies that can be carried out with the Space Telescope of absorption line systems which may be expected to occur in the spectra of distant objects are discussed. The phenomenology of quasar absorption line systems is described and the principal suggested explanations are summarized. It is proposed that the numerous Ly-alpha systems are caused by 'extremely large hydrogenic halos around galaxies or clusters of galaxies. Two tests are also described for the origins of known absorption systems, the results of which will favor either the cosmological or intrinsic hypothesis. Absorption lines that are likely to be strongest are listed and a sample observing program is presented.

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