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ICE AND DUST IN THE QUIESCENT MEDIUM OF ISOLATED DENSE CORESSome of the data presented herein were obtained at the WM Keck Observatory, which is operated as a scientific partnership among the California Institute of Technology, the University of California, and the National Aeronautics and Space Administration. The Observatory was made possible by the generous financial support of the WM Keck Foundation.

Authors
  • Aca, Boogert
  • T L, Huard
  • A M, Cook
  • Jean Chiar
  • C, Knez
  • Leen, Decin
  • G A, Blake
  • Aggm, Tielens
  • E F, Van Dishoeck
Type
Published Article
Journal
The Astrophysical Journal
Publisher
American Astronomical Society
Publication Date
Feb 14, 2011
Volume
729
Issue
2
Pages
92–92
Source
SETI Institute
License
Unknown

Abstract

The relation between ices in the envelopes and disks surrounding young stellar objects (YSOs) and those in the quiescent interstellar medium (ISM) is investigated. For a sample of 31 stars behind isolated dense cores, ground-based and Spitzer spectra and photometry in the 1-25 μm wavelength range are combined. The baseline for the broad and overlapping ice features is modeled, using calculated spectra of giants, H 2 O ice and silicates. The adopted extinction curve is derived empirically. Its high resolution allows for ...

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