Corrections and Clarifications


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Science  10 Oct 1986:
Vol. 234, Issue 4773, pp. 128
DOI: 10.1126/science.234.4773.128-b


In the article "Detection of water vapor in Halley's comet" by M. J. Mumma et al. (20 June, p. 1523), conflicting numbers were given for the production rate of water on 22 December UT (observing period). The correct production rate is ∼6 x 1028 molecules per second on that date. The discussion of rotational populations of ortho-H2O (p. 1527) should have stated that collisional excitation of l10 (not l01) seems unlikely. The correct citation for reference 22 is Astrophys. J. 276, 782 (1984).