Hostname: page-component-78c5997874-fbnjt Total loading time: 0 Render date: 2024-11-07T21:25:18.870Z Has data issue: false hasContentIssue false
  • English
  • Français

Properties of Neutral Hydrogen Clouds

Published online by Cambridge University Press:  14 August 2015

Ulrich J. Schwarz  and
Hugo van Woerden
Ulrich J. Schwarz
Affiliation:
Kapteyn Astronomical Institute, University of Groningen, Groningen, The Netherlands
Hugo van Woerden
Affiliation:
Kapteyn Astronomical Institute, University of Groningen, Groningen, The Netherlands

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.

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. Histograms of cloud parameters are presented and subjected to statistical analysis. There is evidence for tenuous clouds of large angular extent but very low column density (NH<1019 cm-2).

Type
Part 1: The Interstellar Medium
Information
Symposium - International Astronomical Union , Volume 60: Galactic Radio Astronomy , 1974 , pp. 45 - 50
Copyright
Copyright © Reidel 1974 

References

Clark, B. G.: 1965, Astrophys. J. 142, 1398.CrossRefGoogle Scholar
Field, G. B. and Hutchins, J.: 1968, Astrophys. J. 153, 737.Google Scholar
Heiles, C.: 1967, Astrophys. J. Suppl. 15, 97.Google Scholar
Kaper, H. G., Smits, D. W., Schwarz, U. J., Takakubo, K., and Woerden, H. van: 1966, Bull. Astron. Inst. Neth. 18, 465.Google Scholar
Muller, C. A.: 1959, in Bracewell, R. N. (ed.), ‘Paris Symposium on Radio Astronomy’, IAU Symp. 9, 360.Google Scholar
Radhakrishnan, V. and Goss, W. M.: 1972, Astrophys. J. Suppl. 24, 161.Google Scholar
Radhakrishnan, V., Murray, J. D., Lockhart, P., and Whittle, R. P. J.: 1972, Astrophys. J. Suppl. 24, 15.Google Scholar
Takakubo, K.: 1968, Bull. Astron. Inst. Neth. 20, 107.Google Scholar
Woerden, H. van: 1967, in van Woerden, H. (ed.), ‘Radio Astronomy and the Galactic System’, IAU Symp. 31, 3.Google Scholar
Woerden, H. van: 1970, in Habing, H. J. (ed.), ‘Interstellar Gas Dynamics’, IAU Symp. 39, 369.Google Scholar
Woerden, H. van, Takakubo, K., and Braes, L. L. E.: 1962, Bull. Astron. Inst. Neth. 16, 321.Google Scholar