73 citations · 590 across the 23 of their papers we have counts for
16 papers · 1 filter
Constraining the Physical Properties of Stellar Coronal Mass Ejections with Coronal Dimming: Application to Far Ultraviolet Data of Eridani
R. O. Parke Loyd, James Mason, Meng Jin +9
Coronal mass ejections (CMEs) are a prominent contributor to solar system space weather and might have impacted the Sun's early angular momentum evolution. A signal diagnostic of C…
Space Photometry with BRITE-Constellation
Weiss W. W, Zwintz K., Kuschnig R. +16
BRITE-Constellation is devoted to high-precision optical photometric monitoring of bright stars, distributed all over the Milky Way, in red and/or blue passbands. Photometry from s…
The chaotic wind of WR 40 as probed by BRITE
Tahina Ramiaramanantsoa, Richard Ignace, Anthony F. J. Moffat +9
Among Wolf-Rayet stars, those of subtype WN8 are the intrinsically most variable. We have explored the long-term photometric variability of the brightest known WN8 star, WR 40, thr…
A BRITE view on the massive O-type supergiant V973 Scorpii: Hints towards internal gravity waves or subsurface convection zones
Tahina Ramiaramanantsoa, Rathish Ratnasingam, Tomer Shenar +9
Stochastically-triggered photospheric light variations reaching mmag peak-to-valley amplitudes have been detected in the O8Iaf supergiant V973 Scorpii as the outcome of…
BRITE-Constellation high-precision time-dependent photometry of the early-O-type supergiant Puppis unveils the photospheric drivers of its small- and large-scale wind structures
Tahina Ramiaramanantsoa, Anthony F. J. Moffat, Robert Harmon +33
From months of dual-band optical photometric monitoring at the mmag level, BRITE-Constellation has revealed two simultaneous types of variability in the O4I(n)fp star …
The variability of the BRITE-est Wolf-Rayet binary, Velorum I. Photometric and spectroscopic evidence for colliding winds
Noel D. Richardson, Christopher M. P. Russell, Lucas St-Jean +26
We report on the first multi-color precision light curve of the bright Wolf-Rayet binary Velorum, obtained over six months with the nanosatellites in the BRITE- Constellation…
Studying the photometric and spectroscopic variability of the magnetic hot supergiant Orionis Aa
B. Buysschaert, C. Neiner, N. D. Richardson +14
Massive stars play a significant role in the chemical and dynamical evolution of galaxies. However, much of their variability, particularly during their evolved supergiant stage, i…
The Most Massive Heartbeat: An In-depth Analysis of ι Orionis
Herbert Pablo, N. D. Richardson, J. Fuller +17
ι Ori is a well studied massive binary consisting of an O9 III + B1 III/IV star. Due to its high eccentricity (e = 0.764) and short orbital period (P orb = 29.13376 d), it has been…
Understanding the photometric variability of ζ Ori Aa
B. Buysschaert, C. Neiner, T. Ramiaramanantsoa +3
We studied the variability of the magnetic O-type supergiant Ori Aa using multi-colour BRITE photometry. We confirmed the known rotation frequency …
WR 148: Identifying the companion of an extreme runaway massive binary
Melissa Munoz, Anthony F. J. Moffat, Grant M. Hill +5
WR 148 (HD 197406) is an extreme runaway system considered to be a potential candidate for a short-period (4.3173 d) rare WR + compact object binary. Provided with new high resolut…
The CHARA Array resolves the long-period Wolf-Rayet binaries WR 137 and WR 138
Noel D. Richardson, Tomer Shenar, Olivier Roy-Loubier +10
We report on interferometric observations with the CHARA Array of two classical Wolf-Rayet stars in suspected binary systems, namely WR 137 and WR 138. In both cases, we resolve th…
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…
Massive pulsating stars observed by BRITE-Constellation. I. The triple system Beta Centauri (Agena)
A. Pigulski, H. Cugier, A. Popowicz +16
This paper aims to precisely determine the masses and detect pulsation modes in the two massive components of Beta Cen with BRITE-Constellation photometry. In addition, seismic mod…
The roAp star Circini as seen by BRITE-Constellation
W. W. Weiss, H. -E. Fröhlich, A. Pigulski +25
We report on an analysis of high-precision, multi-colour photometric observations of the rapidly-oscillating Ap (roAp) star Cir. These observations were obtained with the BRITE…
Spectroscopy, MOST Photometry, and Interferometry of MWC 314: Is it an LBV or an interacting binary?
Noel D. Richardson, Anthony F. J. Moffat, Raphaël Maltais-Tariant +34
MWC 314 is a bright candidate luminous blue variable that resides in a fairly close binary system, with an orbital period of 60.7530.003 d. We observed MWC 314 with a combinat…
MOST detects corotating bright spots on the mid-O type giant ξ Persei
Tahina Ramiaramanantsoa, Anthony F. J. Moffat, André-Nicolas Chené +11
We have used the MOST (Microvariability and Oscillations of STars) microsatellite to obtain four weeks of contiguous high-precision broadband visual photometry of the O7.5III(n)((f…