76 citations · 439 across the 12 of their papers we have counts for
12 papers · 1 filter
Characterization of the variability of the blue supergiant HD 14134
Suryani Guha, Michaela Kraus, Julieta P. Sanchez Arias +2
The post-main sequence (MS) evolution of massive stars encompasses phases in which the stars display high variability. One such class of objects are the blue supergiants which may…
Unveiling the evolutionary state of three B supergiant stars: PU Gem, CMa and CMa
Julieta P. Sánchez Arias, Péter Németh, Elisson S. G. de Almeida +3
We aim to combine asteroseismology, spectroscopy, and evolutionary models to establish a comprehensive picture of the evolution of Galactic blue supergiant stars (BSG). To start su…
Interplay between pulsations and mass loss in the blue supergiant 55 Cygnus = HD 198478
M. Kraus, M. Haucke, L. S. Cidale +14
Blue supergiant stars are known to display photometric and spectroscopic variability that is suggested to be linked to stellar pulsations. Pulsational activity in massive stars str…
New binaries among UV-selected, hot subdwarf stars and population properties
A. Kawka, S. Vennes, S. O'Toole +4
We have measured the orbital parameters of seven close binaries, including six new objects, in a radial velocity survey of 38 objects comprising a hot subdwarf star with orbital pe…
The shortest period sdB plus white dwarf binary CD-30 11223 (GALEX J1411-3053)
S. Vennes, A. Kawka, S. J. O'Toole +2
We report on the discovery of the shortest period binary comprising a hot subdwarf star (CD-30 11223, GALEX J1411-3053) and a massive unseen companion. Photometric data from the Al…
Empirical Determination of Convection Parameters in White Dwarfs I : Whole Earth Telescope Observations of EC14012-1446
J. L. Provencal, M. H. Montgomery, A. Kanaan +55
We report on analysis of 308.3 hrs of high speed photometry targeting the pulsating DA white dwarf EC14012-1446. The data were acquired with the Whole Earth Telescope (WET) during…