Activity in late-type stars. IX. The weakest chromosphere M dwarf yet discovered : GL 105B.

Byrne, P. B.

United Kingdom

Abstract

We present an estimate of chromospheric radiative losses from the dM(e) star, Gl 105B, based on a measurement of the MgII h&k emission line flux, which indicates that this star has the weakest chromospheric heating rate yet found in any M dwarf and that it lies well below the 'basal' heating rate of derived by Schrijver (1987).

1993 Astronomy and Astrophysics
IUE 6