231 citations · 448 across the 6 of their papers we have counts for
6 papers
The nearby magnetic cool DZ white dwarf PM J08186-3110
Adela Kawka, Stéphane Vennes, Nicole F. Allard +2
We present an analysis of photometric, spectroscopic and spectropolarimetric data of the nearby, cool, magnetic DZ white dwarf PM J08186-3110. High dispersion spectra show the pres…
Mass-Metallicity Trends in Transiting Exoplanets from Atmospheric Abundances of HO, Na, and K
Luis Welbanks, Nikku Madhusudhan, Nicole F. Allard +3
Atmospheric compositions can provide powerful diagnostics of formation and migration histories of planetary systems. We investigate constraints on atmospheric abundances of HO,…
New study of the line profiles of sodium perturbed by H2
N. F. Allard, F. Spiegelman, T. Leininger +1
The opacity of alkali atoms, most importantly of Na and K, plays a crucial role in the atmospheres of brown dwarfs and exoplanets. We present a comprehensive study of NaH2 collisio…
A Wigner molecule at extremely low densities: a numerically exact study
Miguel Escobar Azor, Léa Brooke, Stefano Evangelisti +4
In this work we investigate Wigner localization at very low densities by means of the exact diagonalization of the Hamiltonian. This yields numerically exact results. In particular…
A simple position operator for periodic systems
Emilia Aragao Valença, Diego Moreno, Stefano Battaglia +5
We present a position operator that is compatible with periodic boundary conditions (PBC). It is a one-body operator that can be applied in calculations of correlated materials by…
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…