The Differential Redshift of Titanium Lines in K Stars
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| Format: | Artículo científico |
| Language: | en |
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Universidad Nacional Autónoma de México
2022
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| _version_ | 1876466412072992768 |
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| author | Benjamin Oostra |
| author_facet | Benjamin Oostra |
| contents | The Differential Redshift of Titanium Lines in K Stars Benjamin Oostra Paula Catalina Vargas Muñoz Física, Astronomía y Matemáticas Convection stars: general Sun: granulation techniques: spectroscopic We present measurements of line core positions in UVES spectra of a sample of K-type stars, using the technique of bisector tracing. In all but two of these stars we detect an excess redshift of Ti I lines with respect to Fe I lines. We explain this invoking the temperature-dependence of the line depths. We conclude that the granulation curve is not unique but depends on the chemical species. 2022 artículo científico 0185-1101 https://www.redalyc.org/articulo.oa?id=57175502001 https://www.redalyc.org/journal/571/57175502001/ https://www.redalyc.org/journal/571/57175502001/html/ https://www.redalyc.org/journal/571/57175502001/57175502001.epub https://www.redalyc.org/journal/571/57175502001/movil 10.22201/ia.01851101p.2022.58.02.01 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.2 Vol.58 |
| format | Artículo científico |
| id | redalyc_57175502001 |
| institution | Redalyc |
| language | en |
| publishDate | 2022 |
| publisher | Universidad Nacional Autónoma de México |
| spellingShingle | The Differential Redshift of Titanium Lines in K Stars Benjamin Oostra Física, Astronomía y Matemáticas Convection stars: general Sun: granulation techniques: spectroscopic The Differential Redshift of Titanium Lines in K Stars Benjamin Oostra Paula Catalina Vargas Muñoz Física, Astronomía y Matemáticas Convection stars: general Sun: granulation techniques: spectroscopic We present measurements of line core positions in UVES spectra of a sample of K-type stars, using the technique of bisector tracing. In all but two of these stars we detect an excess redshift of Ti I lines with respect to Fe I lines. We explain this invoking the temperature-dependence of the line depths. We conclude that the granulation curve is not unique but depends on the chemical species. 2022 artículo científico 0185-1101 https://www.redalyc.org/articulo.oa?id=57175502001 https://www.redalyc.org/journal/571/57175502001/ https://www.redalyc.org/journal/571/57175502001/html/ https://www.redalyc.org/journal/571/57175502001/57175502001.epub https://www.redalyc.org/journal/571/57175502001/movil 10.22201/ia.01851101p.2022.58.02.01 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.2 Vol.58 |
| title | The Differential Redshift of Titanium Lines in K Stars |
| topic | Física, Astronomía y Matemáticas Convection stars: general Sun: granulation techniques: spectroscopic |
| url | https://www.redalyc.org/articulo.oa?id=57175502001 https://www.redalyc.org/journal/571/57175502001/ https://www.redalyc.org/journal/571/57175502001/html/ https://www.redalyc.org/journal/571/57175502001/57175502001.epub https://www.redalyc.org/journal/571/57175502001/movil |