Least-squares deconvolution based analysis of stellar spectra

Дата и время публикации : 2013-11-28T17:36:19Z

Авторы публикации и институты :
T. Van Reeth
A. Tkachenko
V. Tsymbal

Ссылка на журнал-издание: Ссылка на журнал-издание не найдена
Коментарии к cтатье: Proceedingspaper, 8 pages, 4 figures, appears in “Setting a New Standard in the Analysis of Binary Stars”, Eds K. Pavlovski, A. Tkachenko, and G. Torres, EAS Publications Series
Первичная категория: astro-ph.SR

Все категории : astro-ph.SR, astro-ph.IM

Краткий обзор статьи: In recent years, astronomical photometry has been revolutionised by space missions such as MOST, CoRoT and Kepler. However, despite this progress, high-quality spectroscopy is still required as well. Unfortunately, high-resolution spectra can only be obtained using ground-based telescopes, and since many interesting targets are rather faint, the spectra often have a relatively low S/N. Consequently, we have developed an algorithm based on the least-squares deconvolution profile, which allows to reconstruct an observed spectrum, but with a higher S/N. We have successfully tested the method using both synthetic and observed data, and in combination with several common spectroscopic applications, such as e.g. the determination of atmospheric parameter values, and frequency analysis and mode identification of stellar pulsations.

Category: Physics