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Formation depths of Fraunhofer lines

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arxiv 1505.00975 v1 pith:DTNDKZQ5 submitted 2015-05-05 astro-ph.SR

classification astro-ph.SR
keywords lineformationdepthslinesaveragedepressionemissionwell
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We have summed up our investigations performed in 1970--1993. The main task of this paper is clearly to show processes of formation of spectral lines as well as their distinction by validity and by location. For 503 photospheric lines of various chemical elements in the wavelength range 300--1000 nm we list in Table the average formation depths of the line depression and the line emission for the line centre and on the half-width of the line, the average formation depths of the continuum emission as well as the effective widths of the layer of the line depression formation. Dependence of average depths of line depression formation on excitation potential, equivalent widths, and central line depth are demonstrated by iron lines.

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  1. MAGIS (Measuring Abundances of red super Giants with Infrared Spectroscopy) project I. Establishment of an abundance analysis procedure for red supergiants and its evaluation with nearby stars

    astro-ph.GA 2025-01 conditional novelty 6.0 of 10

    A new near-infrared abundance analysis procedure for red supergiants, tested on ten stars, yields internally consistent relative abundances and matches Cepheid-based iron and magnesium gradients.

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