13 citations · 36 across the 4 of their papers we have counts for
3 papers · 1 filter
Temperature and density dependence of line profiles of sodium perturbed by helium
N. F. Allard, K. Myneni, J. N. Blakely +1
Ultracool stellar atmospheres show absorption by alkali resonance lines severely broadened by collisions with neutral perturbers. In the coolest and densest atmospheres, such as th…
H--He collision-induced satellite in the Lyman- 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- l…
Line shapes of the magnesium resonance lines in cool DZ white dwarf atmospheres
N. F. Allard, J. F. Kielkopf, S. Blouin +4
Line shapes of the magnesium resonance lines in white dwarf spectra are determined by the properties of magnesium atoms and the structure of the white dwarf atmosphere. Through the…