282 citations · 578 across the 6 of their papers we have counts for
6 papers
Consistent Multi-Wavelength Spectral Modeling of Cool White Dwarfs with Carbon-Polluted Atmospheres
Jay Farihi, Piotr M. Kowalski, Sandy K. Leggett +3
This work presents atmospheric modeling of multi-wavelength spectra for eight cool white dwarfs with carbon-enriched atmospheres, with four each of spectral type DQ and DQp. The De…
Complex hydrogen chemical equilibrium and Gaia low mass problem in cool white dwarfs
Piotr M. Kowalski
Large Gaia data set shows substantial misfit between models and observation for cool white dwarfs with , resulting in severe underestimation of masses of t…
Near-UV absorption in very cool DA white dwarfs
D. Saumon, J. B. Holberg, P. M. Kowalski
The atmospheres of very cool, hydrogen-rich white dwarfs (Teff <6000 K) are challenging to models because of the increased complexity of the equation of state, chemical equilibrium…
Found: The missing blue opacity in atmosphere models of cool hydrogen white dwarfs
P. M. Kowalski, D. Saumon
We investigate the importance of the far red wing of the Lyman line of hydrogen in the atmospheres of cool white dwarfs of pure hydrogen composition. We find that this absorpt…
The Free-Free Opacity in Warm, Dense, and Weakly Ionized Helium
P. M. Kowalski, S. Mazevet, D. Saumon
We investigate the ionization and the opacity of warm, dense helium under conditions found in the atmospheres of cool white dwarf stars. Our particular interest is in densities up…
Non-Ideal Equation of State, Refraction and Opacities in Very Cool, Helium-Rich White Dwarf Atmospheres
P. M. Kowalski, D. Saumon, S. Mazevet
The atmospheres of cool, helium-rich white dwarfs constitute an exotic and poorly explored physical regime of stellar atmospheres. Under physical conditions where the temperature v…