Phosphorus Overabundance in Quasars Re-Examined |
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| Authors: | E Margaret Burbidge |
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| Institution: | (1) Center for Astrophysics & Space Sciences, University of California, San Diego, La Jolla, CA 92093-0424, USA |
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| Abstract: | Absorption features in the UV spectra in about 10–15% of quasars show very broad profiles, indicating outflow velocities from
the quasars of one or even two tenths the speed of light. Determinations of the abundances of some elements, particularly
phosphorus, have yielded apparent large overabundances relative to solar. However, it has recently been shown that the absorbing
gas which does not completely cover the continuum source of the emission-line clouds may have large optical depth so that
the absorption lines are heavily saturated, leading to spurious overabundances of some elements, including phosphorus.
This revised version was published online in July 2006 with corrections to the Cover Date. |
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