High-resolution spectroscopy of Q1100 - 264 again

Details High-resolution spectroscopy of Q1100 - 264 again High-resolution spectroscopy of Q1100 - 264 again

Apr 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991apj...371...36c&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 371, April 10, 1991, p. 36-48.

Astronomy and Astrophysics

Astrophysics

130

Astronomical Spectroscopy, Lyman Alpha Radiation, Quasars, Absorption Spectra, Doppler Effect, Line Spectra

Scientific paper

The results of echelle spectrometry with resolution less than about 9 km/s of the Ly-alpha forest region of Q1100 - 264 are described. The Ly-alpha forest systems show a range of Doppler parameters from 12 km/s to about 80 km/s, with rather large uncertainties for the low H I column density systems particularly. Few of these systems have low Doppler parameters, and there is no significant trend of Doppler parameter with H I column density, in contrast with the results of Pettini et al. from the study of a different quasar. The six heavy element systems with lines in the observed spectral region are all found to have complex velocity structure, on scales ranging from less than about 10 km/s to about 150 km/s.

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