Hostname: page-component-586b7cd67f-2plfb Total loading time: 0 Render date: 2024-11-29T23:04:22.497Z Has data issue: false hasContentIssue false
  • English
  • Français

Diffuse molecular clouds at high galactic latitude

Published online by Cambridge University Press:  03 August 2017

Ronald Stark
Ronald Stark*
Affiliation:
Sterewacht Leiden, P.O. Box 9513, NL-2300 RA Leiden, the Netherlands E-mail [email protected]

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.

The IRAS 60 and 100 μm flux from cirrus clouds are commonly explained by dust continuum emission. But this explanation in some cases requires unexpectedly high dust temperatures.

We argue that the contribution of fine structure emission of neutral oxygen, O°(63 μm), can be significant in the IRAS 60 μm band. The 0°(63 μm) line emission together with the dust continuum emission offers a plausible explanation of the observed flux ratio I(60)/I(100), as well as of its variation across individual clouds. We also discuss the clumpy/filamentary structure of these clouds.

Type
Large Scale Structure
Information
Symposium - International Astronomical Union , Volume 147: Fragmentation of Molecular Clouds and Star Formation , 1991 , pp. 29 - 35
Copyright
Copyright © Kluwer 1991 

References

1. Low, F.J. et al.: 1984 Astrophys. J. 278, L19 Google Scholar
2. de Vries, C.P., le Poole, R.S.: 1985 Astron. Astrophys. 145, L7 Google Scholar
3. Magnani, L., de Vries, C.P.: 1986 Astron. Astrophys. 168, 271 Google Scholar
4. Mathis, J.S., Mezger, P. Panagia, N.: 1983 Astron. Astrophys. 128, 212 Google Scholar
5. Spencer, R.G., Leung, C.M.: 1978 Astrophys. J. 222, 140 CrossRefGoogle Scholar
6. Black, J.H.: 1987 in Interstellar Processes, 731, eds, Hollenbach, D.J., Thronson, H.A. Jr. (Reidel)CrossRefGoogle Scholar
7. Chlewicki, G.: 1987 Astron. Astrophys. 181, 127 Google Scholar
8. Harwit, M., Houck, J.R., Stacey, G.J.: 1986 Nature, 319, 646 Google Scholar
9. Laureijs, R.J., Chlewicki, G., Clark, F.O.: 1988 Astron. Astrophys. 192, L13 Google Scholar
10. Andreani, P. et al.: 1990 preprint Google Scholar
11. Draine, B.T., Anderson, N.: 1985 Astrophys. J. 292, 494 CrossRefGoogle Scholar
12. Puget, J.L., Léger, A., Boulanger, F.: 1985 Astron. Astrophys. 142, L19 Google Scholar
13. Stark, R. et al.: 1990 in preparation Google Scholar
14. Stark, R.: 1990 Astron. Astrophys. 230, L25 Google Scholar
15. van Dishoeck, E.F., Black, J.H.: 1988 Astrophys. J. 334, 771 Google Scholar
16. van Dishoeck, E.F., Black, J.H.: 1986 Astrophys. J. Suppl. Ser. 62, 109 CrossRefGoogle Scholar
17. Odenwald, S.F., Rickard, L.J.: 1987, Astrophys. J. 318, 702 Google Scholar
18. Pineau des Forêts, G., Flower, D.R., Hartquist, T.W., Dalgarno, A.: 1986 M.N.R.A.S. 220, 801 Google Scholar
19. Draine, B.T.: 1986, Astrophys. J. 310, 408 Google Scholar
20. Deul, E.R., Burton, W.B.: 1990, Astron. Astrophys. 230, 153 Google Scholar
21. Magnani, L., Blitz, L., Mundy, L.: 1985, Astrophys. J. 295, 402 Google Scholar
22. Falgarone, E., Pérault, M.: 1988, Astron. Astrophys. 205, L1 Google Scholar