Velocity split along the Rho Ophiuchi streamer (north) - Spinning streamer as 'angular momentum drain' from massive cloud of active star-formation

Details Velocity split along the Rho Ophiuchi streamer (north) - Spinning streamer as 'angular momentum drain' from massive cloud of active star-formation Velocity split along the Rho Ophiuchi streamer (north) - Spinning streamer as 'angular momentum drain' from massive cloud of active star-formation

Feb 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990pasj...42...69u&link_type=abstract

Astronomical Society of Japan, Publications (ISSN 0004-6264), vol. 42, no. 1, 1990, p. 69-83. Research supported by the Japan So

Astronomy and Astrophysics

Astronomy

15

Angular Momentum, Interstellar Magnetic Fields, Ophiuchi Clouds, Star Formation, Carbon Monoxide, Infrared Sources (Astronomy), Red Shift, Spatial Distribution, Star Formation Rate

Scientific paper

It has been found from C-130 observations using the Nagoya 4-m telescope that the blue- and redshifted contours (e.g., VLSR + or - 0.5 km/s) in the p Oph streamer (north) are systematically separated from each other, with blue on the north-west side and red on the south-east side of the curved axis of the streamer, respectively. The interpretation presented here is that the streamer is spinning around its axis. A picture is proposed in which the streamer is a drain through which the angular momentum is carried away from a massive cloud of active star formation by the magnetic twist. This draining allows the star-formation process in the massive cloud to occur with an enhanced rate.

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