Velocity waves in 21 centimeter self-absorption toward the Taurus molecular complex

Details Velocity waves in 21 centimeter self-absorption toward the Taurus molecular complex Velocity waves in 21 centimeter self-absorption toward the Taurus molecular complex

Nov 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987apj...322l.103s&link_type=abstract

Astrophysical Journal, Part 2 - Letters to the Editor (ISSN 0004-637X), vol. 322, Nov. 15, 1987, p. L103-L108. NSERC-supported r

Astronomy and Astrophysics

Astrophysics

14

Centimeter Waves, Molecular Clouds, Self Absorption, Velocity Distribution, Carbon Monoxide, Hydrogen Atoms, Magnetohydrodynamic Waves, Molecular Rotation, Spline Functions, Taurus Constellation

Scientific paper

A 10°×7°.5 region toward the Taurus Molecular Complex has been mapped in 21 cm self-absorption at Arecibo Observatory. The authors find large recorrelation amplitudes in the velocity field of absorbing hydrogen in the cloud complex. Scale lengths are typically 16 pc, and velocity modulation amplitudes 1.5 km s-1. The authors interpret these as velocity waves very likely tightly coupled to, or even resonant with, magnetic field line vibrations. These waves dominate the turbulence within the region.

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