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Identification of new fluorescence processes in the UV spectra of cool stars from new energy levels of Fe II and Cr IITwo fluorescence processes operating in atmospheres of cool stars, symbiotic stars, and the Sun are presented. Two emission lines, at 1347.03 and 1360.17 A, are identified as fluorescence lines of Cr II and Fe II. The lines are due to transitions from highly excited levels, which are populated radiatively by the hydrogen Lyman alpha line due to accidental wavelength coincidences. Three energy levels, one in Cr II and two in Fe II, are reported.
Document ID
19890001384
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Johansson, Sveneric (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Carpenter, Kenneth G. (Colorado Univ. Boulder., United States)
Date Acquired
September 5, 2013
Publication Date
June 1, 1988
Publication Information
Publication: ESA, A Decade of UV Astronomy with the IUE Satellite, Volume 1
Subject Category
Astronomy
Accession Number
89N10755
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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