31 citations · 134 across the 10 of their papers we have counts for
10 papers
An extensive spectroscopic time series of three Wolf-Rayet stars -- II. A search for wind asymmetries in the dust-forming WC7 binary WR137
N. St-Louis, C. Piaulet, N. D. Richardson +39
We present the results of a four-month, spectroscopic campaign of the Wolf-Rayet dust-making binary, WR137. We detect only small-amplitude, random variability in the CIII5696 emiss…
Dynamical structure of the pulsating atmosphere of RR Lyr - I. A typical pulsation cycle
D. Gillet, B. Mauclaire, T. Lemoult +5
RRab stars are large amplitude pulsating stars in which the pulsation is associated with strong shock wake propagating in the atmosphere. The objective of this study is to provide…
First observation of H redshifted emission in RR Lyr
D. Gillet, B. Mauclaire, T. Garrel +10
The so-called H third emission occurs around pulsation phase =0.30. It has been observed for the first time in 2011 in some RR Lyrae stars. The emission intensity is very wea…
An extensive spectroscopic time-series of three Wolf-Rayet stars. I. The lifetime of large-scale structures in the wind of WR 134
E. J. Aldoretta, N. St-Louis, N. D. Richardson +46
During the summer of 2013, a 4-month spectroscopic campaign took place to observe the variabilities in three Wolf-Rayet stars. The spectroscopic data have been analyzed for WR 134…
A Coordinated X-ray and Optical Campaign of the Nearest Massive Eclipsing Binary, delta Orionis Aa: III. Analysis of Optical Photometric MOST and Spectroscopic (Ground Based) Variations
Herbert Pablo, Noel D. Richardson, Anthony F. J. Moffat +44
We report on both high-precision photometry from the MOST space telescope and ground-based spectroscopy of the triple system delta Ori A consisting of a binary O9.5II+early-B (Aa1…
Doppler tomography of the circumstellar disk of π Aquarii
S. V. Zharikov, A. S. Miroshnichenko, E. Pollmann +17
The work is aimed at a study of the circumstellar disk of the bright classical binary Be star π Aqr. We analysed variations of a double-peaked profile of the Hα emission line in th…