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Published online by Cambridge University Press: 14 August 2015
Photoelectric emission from interstellar dust grains due to ultraviolet starlight is reinvestigated. Ejection of photoelectrons can make a substantial contribution to the heating of standard interstellar clouds. Both positive and negative grain charges are shown to be possible.
Supported in part by U.S. National Science Foundation Grants GP-26068 and GP-27355.