Asymmetric shapes of radio recombination lines from ionized stellar winds
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Redalyc
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| Format: | Artículo científico |
| Langue: | en |
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Universidad Nacional Autónoma de México
2019
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| _version_ | 1876489266802982912 |
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| author | R. Ignace |
| author_facet | R. Ignace |
| contents | Asymmetric shapes of radio recombination lines from ionized stellar winds R. Ignace Física, Astronomía y Matemáticas Line type stars early winds Recombination line profile shapes are derived for ionized spherical stellar winds at radio wavelengths. It is assumed that the wind is optically thick owing to free-free opacity. Emission lines of arbitrary optical depth are obtained assuming that the free-free photosphere forms in the outer, constant expansion portion of the wind. Previous works have derived analytic results for isothermal winds when the line and continuum source functions are equal. Here, semi-analytic results are derived for unequal source functions to reveal that line shapes can be asymmetric about line center. A parameter study is presented and applications discussed. 2019 artículo científico 0185-1101 https://www.redalyc.org/articulo.oa?id=57171616005 https://www.redalyc.org/journal/571/57171616005/ https://www.redalyc.org/journal/571/57171616005/html/ https://www.redalyc.org/journal/571/57171616005/57171616005.epub https://www.redalyc.org/journal/571/57171616005/movil en http://www.redalyc.org/revista.oa?id=571 Revista Mexicana de Astronomía y Astrofísica application/pdf Universidad Nacional Autónoma de México Revista Mexicana de Astronomía y Astrofísica (México) Num.1 Vol.55 |
| format | Artículo científico |
| id | redalyc_57171616005 |
| institution | Redalyc |
| language | en |
| publishDate | 2019 |
| publisher | Universidad Nacional Autónoma de México |
| spellingShingle | Asymmetric shapes of radio recombination lines from ionized stellar winds R. Ignace Física, Astronomía y Matemáticas Line type stars early winds Asymmetric shapes of radio recombination lines from ionized stellar winds R. Ignace Física, Astronomía y Matemáticas Line type stars early winds Recombination line profile shapes are derived for ionized spherical stellar winds at radio wavelengths. It is assumed that the wind is optically thick owing to free-free opacity. Emission lines of arbitrary optical depth are obtained assuming that the free-free photosphere forms in the outer, constant expansion portion of the wind. Previous works have derived analytic results for isothermal winds when the line and continuum source functions are equal. Here, semi-analytic results are derived for unequal source functions to reveal that line shapes can be asymmetric about line center. A parameter study is presented and applications discussed. 2019 artículo científico 0185-1101 https://www.redalyc.org/articulo.oa?id=57171616005 https://www.redalyc.org/journal/571/57171616005/ https://www.redalyc.org/journal/571/57171616005/html/ https://www.redalyc.org/journal/571/57171616005/57171616005.epub https://www.redalyc.org/journal/571/57171616005/movil en http://www.redalyc.org/revista.oa?id=571 Revista Mexicana de Astronomía y Astrofísica application/pdf Universidad Nacional Autónoma de México Revista Mexicana de Astronomía y Astrofísica (México) Num.1 Vol.55 |
| title | Asymmetric shapes of radio recombination lines from ionized stellar winds |
| topic | Física, Astronomía y Matemáticas Line type stars early winds |
| url | https://www.redalyc.org/articulo.oa?id=57171616005 https://www.redalyc.org/journal/571/57171616005/ https://www.redalyc.org/journal/571/57171616005/html/ https://www.redalyc.org/journal/571/57171616005/57171616005.epub https://www.redalyc.org/journal/571/57171616005/movil |