Results 11 to 20 of about 3,246 (239)
Extragalactic diffuse neutral hydrogen clouds - Probes of a hot intergalactic medium
Astrophysical Journal, 1976 Extragalactic diffuse neutral hydrogen clouds constitute a probe of the intergalactic gas by both thermal and dynamical interaction with the surrounding medium. Clouds recently discovered by Mathewson et al. in the Sculptor group place stringent limits on the density and temperature of any intergalactic gas unless the clouds are very highly clumped ...
L L Cowie, C F Mckee
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Annual Review of Astronomy and Astrophysics, 1997 High-velocity clouds (HVCs) consist of neutral hydrogen (HI) at velocities incompatible with a simple model of differential galactic rotation; in practice one uses \v(LSR)\ greater than or equal to 90 km/s to define HVCs.
H Van Woerden
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Neutral hydrogen in nearby spiral galaxies holes and high velocity clouds [PDF]
, 1993 In this thesis we have investigated the neutral hydrogen distributions and kinematics of three nearby, face-on spiral galaxies: M 101, NGC 6946 and NGC 628. In particular, we have searched for holes and high velocity gas.
Kamphuis, Jurjen Jan +1 more
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Neutral hydrogen absorption by high-velocity clouds
Astrophysical Journal, 1978 John M Dickey, E E Salpeter, Y Terzian
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Magnetic Fields in Interstellar Neutral-Hydrogen Clouds
Astrophysical Journal, 1969 G L Verschuur
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Neutral Hydrogen in the Magellanic Clouds [PDF]
Symposium - International Astronomical Union, 1999 We review observations of neutral atomic hydrogen (HI) in the Magellanic Clouds (MCs). Being the nearest gas-rich neighbours of the Milky Way the MCs give us an excellent opportunity to study in detail the structure and evolution of the interstellar medium (ISM) and the effect of interactions between galaxies.
L. Staveley-Smith +2 more
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Properties of Neutral Hydrogen Clouds [PDF]
Symposium - International Astronomical Union, 1974 In the region +19° <b< +30°, 122° <l< 143°, 21-cm line profiles were analyzed into Gaussian components, and these components combined into clouds, by means of computerized procedures. Maps of some of the clouds so defined are presented, and their properties discussed. Many clouds are elongated and/or irregular in shape.
Ulrich J. Schwarz, Hugo van Woerden
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Interstellar neutral hydrogen at high velocities [PDF]
, 1990 For almost three decades neutral hydrogen moving at velocities unexplicable by galactic rotation has been observed. These so-called high-velocity clouds (IIVCs) have been invoked as evidence for infall of neutral gas to the galaxy, as manifestations of a
Wakker, Bastiaan Pieter, +1 more
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Neutral hydrogen emission-absorption observations of high-velocity clouds
Astrophysical Journal, 1980 Y Terzian, E E Salpeter
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