Structure of the L1535 dark cloud and the velocity field in the Taurus molecular complex

Details Structure of the L1535 dark cloud and the velocity field in the Taurus molecular complex Structure of the L1535 dark cloud and the velocity field in the Taurus molecular complex

Aug 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984apj...283..140g&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 283, Aug. 1, 1984, p. 140-146.

Astronomy and Astrophysics

Astronomy

19

Interstellar Gas, Molecular Clouds, Nebulae, Astronomical Maps, Carbon Monoxide, Emission Spectra, H Alpha Line, Hydrocyanic Acid, Kinematics

Scientific paper

The dark cloud L1535 has been studied in the J = 1-0 transitions of (C-12)O and (C-13)O with the Five College Radio Astronomy Observatory's 14 m antenna. This region, a condensation located at the eastern end of the extended filament in the Taurus complex, is found to have a size of 0.7 x 0.35 pc, and a mass of 20 solar masses. The H-alpha emission star Taurus-Auriga 3 and surrounding nebulosity are found to be intimately connected to the molecular cloud. The velocity field in L1535 contains a significant systematic component suggestive of rotation with a velocity gradient 1.3 km per s pc. The sense of the overall rotation of L1535 is opposite that suggested by NH3 observations of the cloud core. The relationship of the velocity field in L1535 to that in other portions of the Taurus complex is discussed, anad it is concluded that contraction with conservation of angular momentum initially provided by differential galactic rotation cannot explain the present velocity field in this region.

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