Abhyankar, K. D. ; Ramanathan, A. S. (1955) Equivalent widths of atomic lines in sunspot spectra Astrophysical Journal, 121 (3). pp. 739-749. ISSN 0004-637X
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Official URL: http://adsabs.harvard.edu/abs/1955ApJ...121..739A
Abstract
Equivalent widths of 82 Cr I lines, 70 Fe 1 lines, and 74 Ti I lines are measured in the spectra of four sunspots of average area 55 millionths of the visible hemisphere of the sun. Separate curves of growth for Cr I, Fe t, and Ti I are constructed. Excitation temperatures of 4030° ± 80° , 4200° ± 150° , and 3800° ± 100° are obtained for Cr I, Fe I, and Ti I, respectively.
| Item Type: | Article |
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| Source: | Copyright of this article belongs to American Astronomical Society. |
| ID Code: | 23861 |
| Deposited On: | 01 Dec 2010 13:01 |
| Last Modified: | 17 May 2016 07:39 |
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