324 citations · 1.8k across the 41 of their papers we have counts for
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Might Carbon-Atmosphere White Dwarfs Harbour a New Type of Pulsating Star?
G. Fontaine, P. Brassard, P. Dufour
In the light of the recent and unexpected discovery of a brand new type of white dwarfs, those with carbon-dominated atmospheres, we examine the asteroseismological potential of su…
Observations and asteroseismic analysis of the rapidly pulsating hot B subdwarf PG 0911+456
S. K. Randall, E. M. Green, V. Van Grootel +11
The principal aim of this project is to determine the structural parameters of the rapidly pulsating subdwarf B star PG 0911+456 from asteroseismology. Our work forms part of an on…
Evidence for a merger of binary white dwarfs: the case of GD 362
E. Garcia-Berro, P. Loren-Aguilar, A. G. Pedemonte +4
GD 362 is a massive white dwarf with a spectrum suggesting a H-rich atmosphere which also shows very high abundances of Ca, Mg, Fe and other metals. However, for pure H-atmospheres…
The Boundaries of the GW Vir Stars in the Effective Temperature - Surface Gravity Domain
P. -O. Quirion, G. Fontaine, P. Brassard
We derive the theoretical red edge of the pulsating GW Vir stars by using full evolutionary calculations that involve mass loss and diffusion. We put the emphasis on the fact that…
The Potential of Multi-Colour Photometry for Pulsating Subdwarf B Stars
S. K. Randall, G. Fontaine, P. Brassard +1
We investigate the potential of multi-colour photometry for partial mode identification in both long- and short-period variable subdwarf B stars. The technique presented is based o…
The Nature of the Driving Mechanism in the Pulsating Hybrid PG 1159 Star Abell 43
P. -O. Quirion, G. Fontaine, P. Brassard
We extend our previous pulsational stability analyses of PG 1159 stars by modeling the hybrid PG 1159 type star Abell 43. We show that the standard kappa-mechanism due to the ioniz…