A scaling law of interstellar depletions as a tool for abundance studies of Damped Ly alpha systems

Details A scaling law of interstellar depletions as a tool for abundance studies of Damped Ly alpha systems A scaling law of interstellar depletions as a tool for abundance studies of Damped Ly alpha systems

2001-10-23

arxiv.org/abs/astro-ph/0110499v1

Astronomy and Astrophysics

Astrophysics

2 pages, XVII IAP Coll. "Gaseous Matter in Galaxies and Intergalactic Space", Paris, June 19-23, 2001, in press

Scientific paper

An analytical expression is presented that allows dust depletions to be estimated in different types of interstellar environments, including Damped Ly alpha systems. The expression is a scaling law of a reference depletion pattern and takes into account the possibility that the dust chemical composition may vary as a function of the dust-to-metals ratio and of the intrinsic abundances of the medium. Preliminary tests and applications of the proposed scaling law are briefly reported.

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