NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Back to Results
Spectrophotometry near the atmospheric cutoff of the strongest Bowen resonance fluorescence lines of O III in two planetary nebulaeSpectrophotometric results are presented for the stronger, well-resolved Bowen O III resonance fluorescence emission lines in the planetary nebulae 7027 and NGC 7662 down to and including the intrinsically strong line at 3133 A. These data are combined with results from the IUE atlas of spectra and similar results for the longer wavelength lines by Likkel and Aller (1986) to give the first full coverage of the Bowen lines. Good agreement is found with fluorescence theory for the primary cascade lines, except for the Likkel and Aller results. The efficiency of conversion of the exciting He II Ly-alpha into O III lines is determined, and values comparable to other planetary nebulae are found.
Document ID
19890054873
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
O'Dell, C. R.
(Rice University Houston, TX, United States)
Opal, Chet B.
(McDonald Observatory Austin, TX, United States)
Date Acquired
August 14, 2013
Publication Date
June 15, 1989
Publication Information
Publication: Astrophysical Journal, Part 2 - Letters
Volume: 341
ISSN: 0004-637X
Subject Category
Astrophysics
Funding Number(s)
CONTRACT_GRANT: NAG5-29451
Distribution Limits
Public
Copyright
Other
No Preview Available