Project Gutenberg 2025-04-20 Public domain in the USA. 126 Payne-Gaposchkin, Cecilia 1900 1979 Gaposchkin, Cecilia Helena Payne Payne, Cecilia H. Shapley, Harlow 1885 1972 On the distribution of intensity in stellar absorption lines $aCambridge :$bHarvard, $c1926. From: Proceedings of the American Academy of Arts and Sciences, 1925-05, Vol. 61, p. 459-486. Richard Tonsing and the Online Distributed Proofreading Team at https://www.pgdp.net (This book was produced from images made available by the HathiTrust Digital Library.) "On the Distribution of Intensity in Stellar Absorption Lines" by Payne-Gaposchkin et al. is a scientific publication written in the early 20th century. This work focuses on the quantitative analysis of the intensity and contours of absorption lines observed in the spectra of various stars, utilizing observational data and new measurement techniques. The document is technical in nature and is intended for readers with a background in astrophysics or astronomy, particularly those interested in stellar atmospheres and spectral analysis. The opening of this publication introduces the significance of studying stellar absorption lines for understanding atomic structure and star atmospheres, while noting a gap between theory and quantitative observation. The authors then outline their methodology: employing the Harvard Observatory's 16-inch refractor with objective prisms and specialized apertures to record spectra of eleven stars across different spectral types. They detail the use of a microphotometer to analyze the spectra and describe procedures to ensure accuracy, such as controlling for focus, stray light, and measurement consistency. Tables and figures present sample data and summarize results, highlighting key findings such as the relationship between a star's brightness and the depth of its absorption lines, and noting that even the deepest lines do not absorb all background light. (This is an automatically generated summary.) https://catalog.hathitrust.org/Record/009551110 20240901111331payne 1926 US Reading ease score: 75.6 (7th grade). Fairly easy to read. en Astrophysics Stars -- Spectra Absorption spectra QB Text Category: Science - Physics 185929 2025-06-30T05:38:19.179734 text/html 162794 2025-04-20T00:44:29 text/html 1572001 2025-06-30T05:38:26.472735 application/epub+zip 1572735 2025-06-30T05:38:21.294740 application/epub+zip 158756 2025-06-30T05:38:20.133704 application/epub+zip 1376250 2025-06-30T05:38:29.572649 application/x-mobipocket-ebook 1391471 2025-06-30T05:38:25.591693 application/x-mobipocket-ebook 117726 2025-06-30T05:38:17.845720 text/plain; charset=us-ascii 97671 2025-04-20T00:44:29 text/plain; charset=us-ascii 17039 2025-06-30T05:38:29.729656 application/rdf+xml 7661 2025-06-30T05:38:20.475691 image/jpeg 1615 2025-06-30T05:38:20.301737 image/jpeg 1877185 2025-06-30T05:38:19.226727 application/octet-stream application/zip Archives containing the RDF files for *all* our books can be downloaded at https://book.klll.cc/wiki/Gutenberg:Feeds#The_Complete_Project_Gutenberg_Catalog en.wikipedia en.wikipedia