- Access by Xinjiang University
The Abundance of Oxygen in the Sun
Rev. Mod. Phys. 20, 109 – Published 1 January, 1948
DOI: https://doi.org/10.1103/RevModPhys.20.109
Abstract
The forbidden O I lines at , 6300, and 6363 appear as faint absorption lines in the solar spectrum. Measurements of the equivalent widths indicate that the reversing layer has 7× oxygen atoms per square centimeter. Comparison with the equivalent widths of the infra-red permitted lines yields an excitation temperature of 5200° for oxygen. The possibility of using forbidden lines for determining the abundance of other light elements is discussed.
References (6)
- H. D. Babcock, Mt. W. Contribution No. 259; Ap. J. 57, 209 (1923)
- G. Cario, Zeits. f. Physik 42, 15 (1927)
- McLennan and McLeod, Proc. Roy. Soc. A115, 515 (1927)
- S. Pasternack, Ap. J. 92, 129 (1940)
- D. H. Menzel and collaborators, reported in Goldberg and Aller, Atoms, Stars and Nebulae (The Blakiston Company, Philadelphia, 1943), p. 114
- H. N. Russell, Mt. W. Contribution No. 383; Ap. J. 70, 11 (1929)