Fine structure in positive-velocity clouds

Details Fine structure in positive-velocity clouds Fine structure in positive-velocity clouds

Nov 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980mnras.193..583c&link_type=abstract

Monthly Notices of the Royal Astronomical Society, vol. 193, Nov. 1980, p. 583-591. Research supported by the Consejo Nacional

Astronomy and Astrophysics

Astronomy

13

Fine Structure, Hydrogen Clouds, Neutral Gases, Centimeter Waves, Gas Density, Gravitational Collapse, Rotating Fluids

Scientific paper

Neutral hydrogen 21-cm line measurements have been made of the positive-velocity cloud complex HVC267 + 35 + 145 to study its fine structure. A region 6 x 7 deg in angular extent was mapped with angular resolution 0.5 deg and velocity resolution 7.3 km/sec, and the bright central region of the complex was mapped with angular resolution 0.2 deg and velocity resolution 3.7 km/sec. The morphology of the positive-velocity cloud is very similar to that of negative-velocity clouds. The high-resolution observations reveal a small core which appears to be in rapid rotation. Near the center of the core the linewidth increases, suggesting that the core is collapsing.

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