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Analysis of the chromospheric spectrum of O I in Arcturus
Analysis of the chromospheric spectrum of O I in Arcturus
- Source :
- The Astrophysical Journal. 214:785
- Publication Year :
- 1977
- Publisher :
- American Astronomical Society, 1977.
-
Abstract
- The ultraviolet and near-infrared spectra of O I in Arcturus are analyzed by a 15-level 14-transition model for O I and the Ayres-Linsky (1975) model chromosphere. It is found that the anomalously bright O I resonance lines at 1302, 1305, and 1306 A can be readily explained by a Ly-beta-pumped fluorescence mechanism as originally proposed by Bowen (1974). Observed equivalent widths of the near-infrared triplet and singlet lines are also consistent with the model predictions, but the intercombination lines at 1355 and 1359 A and near-infrared quintet lines may pose a problem.
Details
- ISSN :
- 15384357 and 0004637X
- Volume :
- 214
- Database :
- OpenAIRE
- Journal :
- The Astrophysical Journal
- Accession number :
- edsair.doi...........3849c1c560af699a2a2587d6face3945
- Full Text :
- https://doi.org/10.1086/155308