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High Velocity Clouds: Galactic or Extragalactic?

Published online by Cambridge University Press:  14 August 2015

Riccardo Giovanelli
Riccardo Giovanelli*
Affiliation:
Istituto d'Astronomia, Università di Bologna

Extract

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While most of the sky has been surveyed in the 21 cm line at velocities within a few hundred km/s with respect to the LSR, the coverage is highly inhomogeneous in sensitivity, angular and spectral resolution and velocity extent. As interesting information has recently become available on the structure of the clouds, however, inferences on the dynamical and thermal state of the gas have become possible. Here, we shall concentrate on the direction in which this structural information influences the dichotomy stated in the title of this paper.

Type
V: The Outskirts of Galaxies
Information
Symposium - International Astronomical Union , Volume 77: Structure and Properties of Nearby Galaxies , 1978 , pp. 293 - 298
Copyright
Copyright © Reidel 1978 

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