Vol. 546
In section 7. Stellar structure and evolution

Large distance of epsilon Aurigae inferred from interstellar absorption and reddening

by E. F. Guinan, P. Mayer, P. Harmanec, et al., A&A 546, A123

Epsilon Aurigae is an eclipsing binary with the longest orbital period known (27 years). The visible component of the system is an F-type star surrounded by a disk. Because the distance is very uncertain, both high-mass and low-mass models are discussed in the literature in which the F star is either a massive supergiant or a post-asymptotic giant branch star, respectively. The authors analyze the interstellar extinction in the field of epsilon Aurigae and estimate a distance of 1-2 kpc. This indicates that the high-mass model is the correct one.