Please use this identifier to cite or link to this item: http://hdl.handle.net/2248/6212
Title: Depletion Studies in the Interstellar Medium
Authors: Haris, U
Parvathi, V. S
Gudennavar, S. B
Murthy, J
Keywords: Astrochemistry;Cosmic dust;Hydrogen neutral;Molecules;Interstellar matter;Oscillator strengths;Silicon
Issue Date: Jun-2013
Publisher: American Institute of Physics
Citation: American Institute of Physics Conference Proceedings, Vol. 1543, pp. 64-69
Abstract: We report interstellar Si depletion and dust-phase column densities of Si along 131 Galactic sight lines using previously reported gas-phase Si II column densities, after correcting for the differences in oscillator strengths. With our large sample, we could reproduce the previously reported correlations between depletion of Si and average density of hydrogen along the line of sight (<n(H)>) as well as molecular fraction of hydrogen (f(H2). We have also studied the variation of amount of Si incorporated in dust with respect to different extinction parameters. With the limitations we have with the quality of data, we could find a strong relation between the Si dust and extinction. While we cannot predict the density dependent distribution of size of Si grains, we discuss about the large depletion fraction of Si and the bigger size of the silicate grains.
Description: Restricted Access
URI: http://hdl.handle.net/2248/6212
ISBN: 978-0-7354-1167-8
ISSN: 0094-243X
???metadata.dc.rights???: © American Institute of Physics
???metadata.dc.relation.uri???: http://dx.doi.org/10.1063/1.4812600
Appears in Collections:IIAP Publications

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