High column density absorbing clouds in the direction of 2206-199N

Details High column density absorbing clouds in the direction of 2206-199N High column density absorbing clouds in the direction of 2206-199N

Jun 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983liaco..24..602r&link_type=abstract

IN: Quasars and gravitational lenses; Proceedings of the Twenty-fourth Liege International Astrophysical Colloquium, Cointe-Ougr

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12

Absorption Spectra, Astronomical Spectroscopy, Heavy Elements, Hydrogen Clouds, Quasars, Abundance, Space Density

Scientific paper

Two absorption systems with H I column densities of order 5×1020 cm-2 are present in the spectrum of the quasar 2206-199N. One shows the usual strong heavy element absorption lines, and so is consistent with having normal to 1/10 solar abundances. In the other the heavy element lines are remarkably weak, and the abundances could be less than 1/100 solar.

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