Hostname: page-component-cd9895bd7-mkpzs Total loading time: 0 Render date: 2024-12-12T20:11:22.416Z Has data issue: false hasContentIssue false
  • English
  • Français

H20+ Ions in Comets: Comet Kohoutek (1973f) and Comet Bradfield (1974b)

Published online by Cambridge University Press:  22 February 2018

Peter Wehinger  and
Susan Wyckoff

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.

Herzberg and Douglas (1973) first predicted that the H20+ ion might be observable in comet tail spectra. Subsequently Lew and Heiber (1973) discovered the laboratory spectrum of H20+. In October and November 1973, Herbig (1973), Benvenuti and Wurm (1974), and Wehinger and Wyckoff (1974) reported unidentified features in the tail spectrum of comet Kohoutek. On the basis of these observations, Herzberg and Lew (1974) made a tentative identification by pointing out coincidences with several strong low-lying lines in the H20+ spectrum. Further observations were obtained in November 1973 and January 1974 at the Wise Observatory and by Herbig at the Lick Observatory. Six vibronic bands (5-0 through 10-0), including a total of approximately 50 rotational lines were identified with laboratory H20+ spectrum (Wehinger et al. 1974). The predicted spin splitting of those lines with 2 to 4 Å separation was observed in the coude spectra of Herbig.

Type
Part I
Information
International Astronomical Union Colloquium , Volume 25 , Issue Part1: The Study of Comets , 1976 , pp. 199 - 205
Copyright
Copyright © NASA 1976

References

Benvenuti, P. and Wurm, K. 1974, Astr. and Ap., 31, 121.Google Scholar
Candy, M. P. 1974, IAU Circ., No. 2642.Google Scholar
Delsemme, A. H. and Rud, D. A. 1973, Astr. and Ap., 28, 1.Google Scholar
Deutschmann, W. A. 1974, Comet Kohoutek Workshop, MSFC - NASA, (in press), ed. Gary, G. A..Google Scholar
Erman, P. and Brzozowski, J. 1973, Phys. Letters, 46A, 79.Google Scholar
Feldman, P., Takacs, P. Z., Fastie, W. G. and Donn, B. 1974, Science, 185, 705.Google Scholar
Herbig, G. H. 1973, IAU Circ., No. 2596.Google Scholar
Herzberg, G. and Douglas, A. E. 1973, IAU Trans., 15A, 174.Google Scholar
Herzberg, G. and Lew, H. 1974, Astr. and Ap., 31, 123.Google Scholar
Jackson, W. 1972, Molec. Photochem., 4, 135.Google Scholar
Jacobs, A. 1974, private communication.Google Scholar
Labs, D. and Neckel, H. 1968, Zs. f. Ap., 69, 1.Google Scholar
Lew, H. and Heiber, I. 1973, J. Chem. Phys., 58, 1246.Google Scholar
Ney, E. 1974, Ap. J. Letters, 189, L41.Google Scholar
Oke, J. B. 1964, Ap. J., 140, 689.Google Scholar
Thomas, R. 1974, private communication.Google Scholar
Wehinger, P. and Wyckoff, S. 1974, Ap. J. Letters, 192, L41.Google Scholar
Wehinger, P., Wyckoff, S., Herbig, G. H., Herzberg, G. and Lew, H. 1974, Ap. J. Letters, 190, L43.Google Scholar
Wyckoff, S. and Wehinger, P. 1975, to be published.Google Scholar
Yeomans, D. K. 1973, Ephemeris of Comet Kohoutek, NASA Operation Kohoutek Office.Google Scholar