Hostname: page-component-586b7cd67f-2plfb Total loading time: 0 Render date: 2024-11-29T09:09:09.888Z Has data issue: false hasContentIssue false
  • English
  • Français

High Velocity Neutral Hydrogen Clouds

Published online by Cambridge University Press:  14 August 2015

R. D. Davies
R. D. Davies*
Affiliation:
University of Manchester, Nuffield Radio Astronomy Laboratories, Jodrell Bank, Cheshire, United Kingdom

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

A review is given of the observations of neutral hydrogen high velocity clouds (|ν| > 80 km s−1) in and near the Galaxy. The positive and negative clouds are seen to have different distributions in the sky, following roughly the velocity pattern of galactic rotation. A characteristic of the majority of the clouds is their distribution in elongated bands or strings. The various theories of origin of HVCs are discussed; the possible role of the tidal interactions between the Magellanic Clouds and the Galaxy is emphasized. Tests are suggested to distinguish between the Oort theory of the infall of intergalactic material and theories which envisage the HVCs as originating in the outermost spiral structure.

Type
Part 6: Large-Scale Galactic Structure
Information
Symposium - International Astronomical Union , Volume 60: Galactic Radio Astronomy , 1974 , pp. 599 - 616
Copyright
Copyright © Reidel 1974 

References

Berkhuijsen, E. M., Haslam, C. G. T., and Salter, C. J.: 1971, Astron. Astrophys. 14, 252.Google Scholar
Blaauw, A. and Tolbert, C. R.: 1966, Bull. Astron. Inst. Neth. 18, 405.Google Scholar
Clutton-Brock, M.: 1972, Astrophys. Space Sci. 17, 292.Google Scholar
Davies, R. D.: 1972, Nature 237, 88.Google Scholar
Davies, R. D.: 1973, Monthly Notices Roy. Astron. Soc. 160, 381.Google Scholar
Davies, R. D. and Buhl, D.: 1974, in preparation.Google Scholar
Dieter, N. H.: 1965, Astron. J. 70, 552.Google Scholar
Dieter, N. H.: 1971, Astron. Astrophys. 12, 59.Google Scholar
Encrenaz, P. J., Penzias, A. A., Gott, R., Wilson, R. W., and Wrixon, G. T.: 1971, Astron. Astrophys. 12, 16.Google Scholar
Eneev, T. M., Kozlov, N. N., and Sunyaev, R. A.: 1973, Astron. Astrophys. 22, 41.Google Scholar
Fejes, I. and Verschuur, G. L.: 1973, Astron. Astrophys. 25, 85.Google Scholar
Habing, H. J.: 1966, Bull. Astron. Inst. Neth. 18, 323.Google Scholar
Habing, H. J.: 1969, Bull. Astron. Inst. Neth. 20, 177.Google Scholar
Hulsbosch, A. N. M.: 1968, Bull. Astron. Inst. Neth. 20, 33.Google Scholar
Hulsbosch, A. N. M.: 1973, Thesis, Sterrewacht te Leiden.Google Scholar
Hulsbosch, A. N. M. and Raimond, E.: 1966, Bull. Astron. Inst. Neth. 18, 413.Google Scholar
Hunter, C. and Toomre, A.: 1969, Astrophys. J. 155, 747.CrossRefGoogle Scholar
Kepner, M.: 1970, Astron. Astrophys. 5, 444.Google Scholar
Kerr, F. J.: 1964, Lagonissi Lecture.Google Scholar
Kerr, F. J. and Sullivan, W. T.: 1969, Astrophys. J. 158, 115.Google Scholar
Kerr, F. J. and Westerhout, G.: 1965, Stars and Stellar Systems 5, 167.Google Scholar
Kuilenberg, J. van: 1972a, Astron. Astrophys. 16, 276.Google Scholar
Kuilenberg, J. van: 1972b, Astron. Astrophys. Suppl. 5, 1.Google Scholar
Mathewson, D. S., Clearly, M. N., and Murray, J. D.: 1973, Astrophys. J. 190, 291.Google Scholar
Mathewson, D. S., Meng, S. Y., Brundage, W. D., and Kraus, J. D.: 1966, Astron. J. 71, 863.Google Scholar
Meng, S. Y. and Kraus, J. D.: 1970, Astron. J. 75, 535.Google Scholar
Minkowski, R., Silk, J., and Siluk, R. S.: 1972, Astrophys. J. Letters 175, L123.Google Scholar
Muller, C. A., Raimond, E., Schwarz, U. J., and Tolbert, C. R.: 1966, Bull. Astron. Inst. Neth. Suppl. 1, 213.Google Scholar
Münch, G. and Zirin, H.: 1961, Astrophys. J. 133, 11.CrossRefGoogle Scholar
Murray, J. D., Davies, R. D., Mathewson, D. S., and Cleary, M. N.: 1974, in preparation.Google Scholar
Oort, J. H.: 1966, Bull. Astron. Inst. Neth. 18, 421.Google Scholar
Oort, J. H.: 1969, Nature 224, 1158.CrossRefGoogle Scholar
Oort, J. H.: 1970, Astron. Astrophys. 7, 381.Google Scholar
Rickard, J. J.: 1968, Astrophys. J. 152, 1019.CrossRefGoogle Scholar
Savedoff, M. P., Hovenier, J. W., and van Leer, B.: 1967, Bull. Astron. Inst. Neth. 19, 107.Google Scholar
Silk, J.: 1973, Astron. Astrophys., in press.Google Scholar
Tolbert, C. R.: 1971, Astron. Astrophys. Suppl. 3, 349.Google Scholar
Toomre, A. and Toomre, J.: 1972, Astrophys. J. 178, 623.Google Scholar
Verschuur, G. L.: 1969, Astrophys. J. 156, 771.Google Scholar
Verschuur, G. L.: 1973, Astron. Astrophys. 22, 139.Google Scholar
Verschuur, G. L., Cram, T. R., and Giovanelli, R.: 1972, Astrophys. Letters 11, 57.Google Scholar
Wannier, P. and Wrixon, G. T.: 1972, Astrophys. J. Letters 173, L119.Google Scholar
Wannier, P., Wrixon, G. T., and Wilson, R. W.: 1972, Astron. Astrophys. 18, 224.Google Scholar
Weaver, H.: 1971, in Becker, W. and Contopoulos, G. (eds.), ‘The Spiral Structure of Our Galaxy’, IAU Symp. 38, 126.Google Scholar
Weaver, H. F. and Williams, D. R. W.: 1973, Astron. Astrophys. Suppl. 8, 1.Google Scholar
Wright, A. E.: 1972, Monthly Notices Roy. Astron. Soc. 157, 309.Google Scholar