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Author Hezareh, Talayeh ♦ Houde, Martin ♦ McCoey, Carolyn ♦ Huabai, Li
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language English
Subject Keyword CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS ♦ ASTROPHYSICS, COSMOLOGY AND ASTRONOMY ♦ AMBIPOLAR DIFFUSION ♦ ENERGY LOSSES ♦ MAGNETIC FIELDS ♦ STARS ♦ TURBULENCE ♦ DIFFUSION ♦ LOSSES
Abstract We study the correlation of the velocity dispersion of the coexisting molecules H{sup 13}CN and H{sup 13}CO{sup +} and the turbulent energy dissipation scale in the DR21(OH) star-forming region. The downshift of the H{sup 13}CO{sup +} spectrum relative to H{sup 13}CN is consistent with the presence of ambipolar diffusion at dissipation length scales that helps the process of turbulent energy dissipation, but at a different cutoff for ions compared with the neutrals. We use our observational data to calculate a turbulent ambipolar diffusion length scale L' {approx_equal} 17 mpc and a strength of B{sub pos} {approx_equal} 1.7 mG for the plane of the sky component of the magnetic field in DR21(OH).
ISSN 0004637X
Educational Use Research
Learning Resource Type Article
Publisher Date 2010-09-01
Publisher Place United States
Journal Astrophysical Journal
Volume Number 720
Issue Number 1


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