A Comparison of Lyman Alpha and Hoi Lambda 10830 Line Structure and Variations in Early Type Star ATOMOSPHERS ALPHA VIRGINIS A AND B

摘要

Line profiles and velocities of He I A10830 obtained at maximum velocity separation of the spectroscopic "binary Spice (a Vir) are presented. We derive a mass ratio, MA/MB, of 1.4 and an equatorial velocity of 88 km s~1 for a Vir A. A meaningful discussion of observed equivalent widths of the He I A10830 line awaits a more certain determination of the spectral classification of a Vir B.