Back to Search Start Over

Analysis of the chromospheric spectrum of O I in Arcturus

Analysis of the chromospheric spectrum of O I in Arcturus

Authors :
J. L. Linsky
A. Weinstein
R. A. Shine
B. M. Haisch
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