Efstratios Theodosiou

A Study of the Structure of Different Ionization Potential Regions in the Atmosphere of AX Mon (HD 45910)

The complex structure and the peculiar profiles of some spectral lines are common in the UV spectrum of AX Mon (HD 45910). The observed peculiar profiles are composed by a number of SACs or DACs. In this paper, using the GR model, we study the complex profile of the Al II (λ 1670.81 A), Al III (λλ 1854.722, 1867.782 A), Mg II (λλ 2795.523, 2802.698 A), Fe II (λ 2586.876 A), C II (λλ 1334.515, 1335.684 A) and Si IV (λλ 1393.73, 1402.73 A) spectral lines. Additionally, we calculate the relation of some kinematical parameters of the regions that create the DACs/SACs of the studied lines with the ionization potential.

AX Mon (HD 45910) Kinematical Parameters in the Fe II Spectral Lines as a Function of the Excitation Potential

In the UV spectrum of AX Mon (HD 45910) we observe a series of spectral lines with complex structure and peculiar profiles. This peculiarity is due to SACs or DACs. In this paper, using the GR model, we study the complex profile of Fe II spectral lines and we calculate the relation of some kinematical parameters of the regions that create the DACs/SACs with the excitation potential.