High-Resolution Spectroscopy of Long-Periodic Eclipsing Binary Epsilon Aurigae

TL;DR

This paper reports spectroscopic observations of the long-period eclipsing binary Epsilon Aurigae, providing spectral data and equivalent width measurements to analyze its stellar properties during eclipse events.

Contribution

First spectroscopic data set of Epsilon Aurigae during its eclipse, including spectral series and line measurements, enhancing understanding of its stellar atmosphere.

Findings

Spectral variations observed during the eclipse period.

Equivalent width measurements of key absorption lines.

Data contributes to modeling the binary system's components.

Abstract

The results of spectroscopic observations of long-periodic eclipsing binary Epsilon Aur are reported. The observations were carried out during 2 nights in 2007 at 2-meter telescope located at the peak Terskol, Northern Caucasus (Russia). Here we present series of Epsilon Aur spectra together with EW measurements of the most prominent absorption lines.