77 citations · 230 across the 8 of their papers we have counts for
8 papers
A search for chemical stratification and magnetic fields in eight field blue horizontal-branch stars
Issouf Kafando, Gregg Wade, Alexandre David-Uraz +2
In this article, we present the results of an analysis of chemical abundances and a search for magnetic fields in eight field blue horizontal-branch (BHB) stars: BD\,+010…
Impacts of radiative accelerations on solar-like oscillating main-sequence stars
M. Deal, G. Alecian, Y. Lebreton +5
Chemical element transport processes are among the crucial physical processes needed for precise stellar modelling. Atomic diffusion by gravitational settling nowadays is usually t…
Project VeSElkA: Analysis of Balmer line profiles in slowly rotating chemically peculiar stars
Viktor Khalack, Francis LeBlanc
We present results for the estimation of gravity, effective temperature, and radial velocity of poorly studied chemically peculiar stars recently observed with the spectropolarimet…
Spectral analysis and abundances of the post-HB star HD 76431
V. Khalack, B. Yameogo, F. LeBlanc +4
HD76431 is a slow rotating post-HB star that shows an underabundance of helium by 0.5 dex relative to the solar value. These observational facts suggest that atomic diffusion could…
New observations of chemically peculiar stars with ESPaDOnS
V. Khalack, B. Yameogo, C. Thibeault +1
We present the first results of the estimation of gravity and effective temperature for some poorly studied chemically peculiar stars that were recently observed with the spectropo…
Hot horizontal branch stars in NGC 288 - effects of diffusion and stratification on their atmospheric parameters
S. Moehler, S. Dreizler, F. LeBlanc +5
NGC288 is a globular cluster with a well-developed blue horizontal branch covering the u-jump that indicates the onset of diffusion. It is therefore well suited to study the effect…
The new Toulouse-Geneva Stellar Evolution Code including radiative accelerations of heavy elements
S. Theado, G. Alecian, F. LeBlanc +1
Atomic diffusion has been recognized as an important process that has to be considered in any computations of stellar models. In solar-type and cooler stars, this process is domina…
Influence of thermohaline convection on diffusion-induced iron accumulation in A stars
Sylvie Théado, Sylvie Vauclair, Georges Alecian +1
Atomic diffusion may lead to heavy element accumulation inside stars in certain specific layers. Iron accumulation in the Z-bump opacity region has been invoked by several authors…