A Statistical Study of the Si IV Resonance Line Parameters in 19 Be Stars

Baltic astronomy

article

A. Antoniou¹  E. Danezis¹  E. Lyratzi¹  D. Stathopoulos¹  M. S. Dimitrijević¹ 

[1] University of Athens, Faculty of Physics, Department of Astrophysics;University of Peloponnese, Faculty of Science and Technology, Department of Telecommunication Science and Technology;Eugenides Foundation;Observatoire de Paris-Meudon

关键词: stars;    Be;    techniques;    spectroscopic;    ultraviolet;    Si IV resonance lines;   

DOI  :  10.1515/astro-2017-0334

来源: Institute of Theoretical Physics and Astronomy

【 摘 要 】

Using the GR model, we analyze the ultraviolet Si IV resonance lines in the spectra of 19 Be stars of different spectral subtypes, in order to detect the presence of absorption components and to analyze their characteristics. From this analysis we can calculate the values of a group of physical parameters, such as the apparent rotational and radial velocities, the random velocities of the ion thermal motions, as well as the absorbed energy and the logarithm of the column density of the independent regions of matter which produce the main and the satellite components of the studied spectral lines.

【 授权许可】

Unknown