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Stellar atmospheres

Chapter 61: FOOTNOTES:
By Cecilia Payne-Gaposchkin
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About This Book

This work presents a detailed analysis of stellar atmospheres, focusing on the physical principles underlying astrophysics. It explores the relationship between physics and astrophysics, examining properties of matter related to nuclear structure and atomic states. The text discusses the stellar temperature scale, including definitions and temperature variations among different types of stars. It also addresses the effects of temperature, pressure, and other conditions on stellar spectra, providing insights into the observational results from the Harvard Observatory. The analysis aims to contribute to the understanding of stellar atmospheres through extensive research and original investigations.

FOOTNOTES:

[476] Russell, Science, 39, 791, 1914.

[477] R. H. Fowler and Milne, M. N. R. A. S., 83, 403, 1923.

[478] Harrison, unpub.

[479] H. C. 258, 1924.

[480] Payne, Proc. N. Ac. Sci., 11, 192, 1925.

[481] Clarke and Washington, Proc. N. Ac. Aci., 8, 108, 1922.

[482] Russell, Science, 39, 791, 1914.

[483] Pub. Dom. Ap. Obs., 1, 325, 1922.

[484] Jeffreys, The Earth, 1924.

[485] Shapley.

[486] Nature, 115, 419, 1925.

[487] M. N. R. A. S., 84, 665, 1924.

[488] Clarke and Washington, Proc. N. Ac. Sci., 8, 108, 1922.

[489] H. C. 256, 1924.

[490] Fowler, Report on Series in Line Spectra, 170, 1922.

[491] Hopfield, Nature, 112, 437, 1923.

[492] H. C. 256, 1924.

[493] Clarke, U. S. Geol. Surv. Prof. Pap. 132, 1924.

[494] G. P. Merrill, quoted by Clarke, U. S. Geol. Surv. Bul. 491.

[495] Professor Russell believes that iron is much more abundant, at least in the sun, than calculated above. He writes: “More than half of all the strong winged solar lines are iron lines, and the strength and evident saturation of even the faint satellites in the iron multiplets is remarkable.... There are a great many multiplets of nearly equal strength arising from the low triplet level in iron.... Nothing like this happens for the lines, or for and , although it may hold true for the Mg triplets. I should consequently favor multiplying the percentage for iron by a factor of at least 3 and probably 5—which would put it where it obviously belongs.”

[496] Chapter V, p. 56.