H--He collision-induced satellite in the Lyman-$\alpha$ profile of DBA white dwarf stars

Nicole F. Allard, John F. Kielkopf, Siyi Xu +6

The spectra of helium-dominated white dwarf stars with hydrogen in their atmosphere present a distinctive broad feature centered around 1160~Å\/ in the blue wing of the Lyman-$\alpha$ l…