Hostname: page-component-cd9895bd7-jn8rn Total loading time: 0 Render date: 2024-12-12T19:44:28.066Z Has data issue: false hasContentIssue false
  • English
  • Français

Radio Detection of H2O in Comet Bradfield (1974b)

Published online by Cambridge University Press:  22 February 2018

W. M. Jackson ,
T Clark  and
B. Donn

Extract

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 present authors (Clark et al, 1971) previously attempted to detect the 1.35 cm microwave line of water in Comet Bennett (1969i) using the 26 m Maryland Point radio telescope of the Naval Research Laboratory. An upper limit for the H2O column density of 1017 molec/cm2 was obtained assuming the rotational levels were in thermal equilibrium, A more recent search in Comet Kohoutek using the 37 m radio telescope of the Haystack Observatory with a low noise traveling wave maser preamplifier was also unsuccessful. In this comet the identification of H2O+ in the visible spectrum gave strong support to the idea of water as a major parent molecule. The radio detection of HCN (Heubner et al, 1974) and CH3CH (Uhlich and Conklin, 1974) in Comet Kohoutek suggested that the attempt to detect H2O should be repeated in a suitable comet.

Type
Part I
Information
International Astronomical Union Colloquium , Volume 25 , Issue Part1: The Study of Comets , 1976 , pp. 272 - 280
Copyright
Copyright © NASA 1976

References

1. Bertaux, J.L., Blamont, J.E., and Festou, M., 1974. Astron. and Astrophys., 25, 415.Google Scholar
2. Buhl, D., Snyder, L., Schwartz, P.R., and Barrett, A.H. 1969, Ap. J., 158, L97.Google Scholar
3. Carruthers, G.R., Opal, C.B., Page, T.L., Meier, R.R., and Prinz, D.K. 1974, Icarus, 23, 526.Google Scholar
4. Clark, T.A., Donn, B., Jackson, W., Sullivan, W.T., and Vanderberg, N. 1971, Astron. J., 76, 614.Google Scholar
5. Heubner, W.F., and Snyder, L.F. 1970, Astron. J., 75, 759.Google Scholar
6. Heubner, W.F., Snyder, L.S., and Buhl, D., 1974, Icarus, 23, 580.CrossRefGoogle Scholar
7. Itikawa, Y., 1972, J. Phy. Soc. Japan, 32, 217.CrossRefGoogle Scholar
8. Jackson, W.M., and Donn, B. 1966, Colloque Int. Astrophys., Liege, 1965, p. 133.Google Scholar
9. Levine, R.D., and Bernstein, R.B. 1974, “Molecular Reaction Dynamics”, Oxford University Press, P. 152.Google Scholar
10. Litvak, M.M. 1972, in Molecules in the Galactic Environment, ed. Gordon, M.A. and Snyder, L.E. (New York, Wiley), p. 267.Google Scholar
11. Snyder, L.E. 1975, These Proceedings.Google Scholar
12. Uhlich, B.L. and Conklin, E.K., 1974, Nature, 248, 121.CrossRefGoogle Scholar