Keywords
convection
stars: general
Sun: granulation
techniques: spectroscopic
stars: general
Sun: granulation
techniques: spectroscopic
How to Cite
The Differential Redshift of Titanium Lines in K Stars. (2022). Revista Mexicana De Astronomía Y Astrofísica, 58(2), 173-180. https://doi.org/10.22201/ia.01851101p.2022.58.02.01
Abstract
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.Similar Articles
- Hobson M. J., Jofré E., García L., Petrucci R., Gómez M., Testing the Planet-Metallicity Correlation in M-dwarfs with Gemini GNIRS Spectra , Revista Mexicana de Astronomía y Astrofísica: Vol. 54 No. 1 (2018)
- Echevarría J., Ramírez S. H., Fuentes M., Sánchez L. J., Patiño V., Chavushyan V., New Spectroscopy of U Gem , Revista Mexicana de Astronomía y Astrofísica: Vol. 59 No. 2 (2023)
- Cavichia O., Costa R. D. D., Maciel W. J., Planetary nebulae in the inner Milky Way: new abundances , Revista Mexicana de Astronomía y Astrofísica: Vol. 46 No. 1 (2010)
- Nesci R., Tuvikene T., Rossi C., Gaudenzi S., Galleti S., Ochner P., Enke H., AGB Candidates in the Field of γ Cas1 , Revista Mexicana de Astronomía y Astrofísica: Vol. 54 No. 2 (2018)
- García L., Gómez M., Optical polarization of solar type stars with debris disks , Revista Mexicana de Astronomía y Astrofísica: Vol. 51 No. 1 (2015)
- Arellano Ferro A., A Vindication of the RR Lyrae Fourier Light Curve Decomposition for the Calculation of Metallicity and Distance in Globular Clusters , Revista Mexicana de Astronomía y Astrofísica: Vol. 58 No. 2 (2022)
- Dufour Reginald J., Shell nebulae around luminous evolved stars. , Revista Mexicana de Astronomía y Astrofísica: Vol. 18 No. 1 (1989)
- Hernández-Toledo H. M., Martínez-Vázquez L. A., Moreno-Corral M. A., Pani-Cielo A., A Photometric and Spectroscopic Evaluation of the Site at Tonantzintla Observatory , Revista Mexicana de Astronomía y Astrofísica: Vol. 46 No. 1 (2010)
- Evans D. S., Some thoughts on multiple stars. , Revista Mexicana de Astronomía y Astrofísica: Vol. 3 No. 1 (1977)
- Peña J. H., Juárez S. B., Soni A. A., Huepa H., Rentería A., Zuñiga A. L., Photometric Study of Three Short Period Variable Stars , Revista Mexicana de Astronomía y Astrofísica: Vol. 56 No. 2 (2020)