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Title:
The interstellar extinction law from 1 to 13 microns
Authors:
Rieke, G. H.; Lebofsky, M. J.
Affiliation:
AA(Steward Observatory, Tucson, AZ), AB(Steward Observatory, Tucson, AZ)
Publication:
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 288, Jan. 15, 1985, p. 618-621. NSF-supported research. (ApJ Homepage)
Publication Date:
01/1985
Category:
Astrophysics
Origin:
STI
NASA/STI Keywords:
Galactic Nuclei, Infrared Astronomy, Interstellar Extinction, Interstellar Matter, Molecular Clouds
DOI:
10.1086/162827
Bibliographic Code:
1985ApJ...288..618R

Abstract

Measurements from 1 to 13 mum are reported for omicr Sco and for stars in the galactic center. The interstellar extinction law toward these sources and toward VI Cyg No. 12 is the same from 1 to 13 mum. An improved estimate of the extinction law beyond 3 mum is presented, including an improved ratio of total to selective extinction, R ≈ 3.09±0.03, and an improved ratio of total extinction to optical depth in the 10 mum silicate absorption, Av/tauSi = 16.6±2.1.

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