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Observations of the 2π3/2, J = 7/2 State of OH

  • M. Balister (a1), F. F. Gardner (a1), S. H. Knowles (a1) and J. B. Whiteoak (a1)

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The 6 GHz transitions of the 2π3/2, J = 5/2 excited state of OH are present in emission in the direction of several OH-emission regions (Rickard et al. 1975; Knowles et al. 1976), and in absorption in compact thermal sources (Gardner and Whiteoak 1975). This has suggested that transitions in the next highest state near 13 GHz (J = 7/2) might also be widely observable. A single detection has already been reported in W3OH by Turner et al. (1970). In this paper we report the observation of narrow-band emission in several other sources.

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References

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Burdyazha, V. V., and Varshalovich, D. A., Sov. Astron., 16, 980 (1973).
Gardner, F. F., and Whiteoak, J. B., Mon. Not. R. Astron. Soc, 172, P. 9(1975).
Knowles, S. H., Caswell, J. L., and Goss, W. M., Mon. Not. R. Astron. Soc, (in press) (1976).
Rickard, L. J., Zuckerman, B., and Palmer, P., Astrophys. J., 200, 6 (1975).
Turner, B. E., Palmer, P., and Zuckerman, B., Astrophys. J., 160, L125 (1970).

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