84 citations · 502 across the 25 of their papers we have counts for
26 papers
Multiwavelength Campaign Observations of a Young Solar-type Star, EK Draconis. III. Comparison between Starspot Mapping, Zeeman Doppler Imaging, and Multiwavelength Variability
Kai Ikuta, Kosuke Namekata, Pascal Petit +12
Recent simultaneous multiwavelength observations of a nearby young solar-type star EK Dra in the optical, H spectrum, and X-ray, have provided evidence for stellar prominence er…
Exploring the binary origin of B and Be rapid rotators
Jonathan Labadie-Bartz, Mark Suffak, Carol Jones +8
Observational evidence has continued to mount that a significant fraction of rapidly rotating early-B type stars are products of binary mass transfer. However, very few mid- and la…
Predicted observational effects of rapid rotation for Be stars
Rina G. Rast, Carol E. Jones, Mark W. Suffak +6
We conduct a systematic study on the effects of rapid rotation on predicted Be star observables. We use the three-dimensional Monte Carlo radiative transfer code, \textsc{hdust}, t…
High energy emission powered by accreting companions of Be/gamma Cas stars
Rina G. Rast, Yael Naze, Jonathan Labadie-Bartz +6
The origin of the hard, bright X-ray emission that defines the gamma Cas analog class of Be stars remains an outstanding question in Be star literature. This work explores the poss…
Multiwavelength Campaign Observations of a Young Solar-type Star, EK Draconis. II. Understanding Prominence Eruption through Data-Driven Modeling and Observed Magnetic Environment
Kosuke Namekata, Kai Ikuta, Pascal Petit +15
EK Draconis, a nearby young solar-type star (G1.5V, 50-120 Myr), is known as one of the best proxies for inferring the environmental conditions of the young Sun. The star frequentl…
Magnetism in LAMOST CP stars observed by TESS
Keegan Thomson-Paressant, Coralie Neiner, Jonathan Labadie-Bartz
Context. A thousand new magnetic candidate CP stars have been identified with LAMOST, among which about 700 prime targets have rotational modulation determined from TESS. Aims. We…
Multiwavelength Campaign Observations of a Young Solar-type Star, EK Draconis. I. Discovery of Prominence Eruptions Associated with Superflares
Kosuke Namekata, Vladimir S. Airapetian, Pascal Petit +14
Young solar-type stars frequently produce superflares, serving as a unique window into the young Sun-Earth environments. Large solar flares are closely linked to coronal mass eject…
Lambda And: A post-main sequence wind from a solar-mass star
D. O Fionnagain, A. A. Vidotto, P. Petit +5
We investigate the wind of lambda And, a solar-mass star that has evolved off the main sequence becoming a sub-giant. We present spectropolarimetric observations and use them to re…
Transport of angular momentum by stochastically excited waves as an explanation for the outburst of the rapidly rotating Be star HD49330
C. Neiner, U. Lee, S. Mathis +3
HD49330 is a Be star that underwent an outburst during its five-month observation with the CoRoT satellite. An analysis of its light curve revealed several independent p and g puls…
MOBSTER -- IV. Detection of a new magnetic B-type star from follow-up spectropolarimetric observations of photometrically selected candidates
A. David-Uraz, M. E. Shultz, V. Petit +8
In this paper, we present results from the spectropolarimetric follow-up of photometrically selected candidate magnetic B stars from the MOBSTER project. Out of four observed targe…
How unique is Plaskett's star? A search for organized magnetic fields in short period, interacting or post-interaction massive binary systems
Y. Naze, C. Neiner, J. Grunhut +5
Amongst O-type stars with detected magnetic fields, the fast rotator in the close binary called Plaskett's star shows a variety of unusual properties. Since strong binary interacti…
Magnetic B stars observed with BRITE: Spots, magnetospheres, binarity, and pulsations
G. A. Wade, D. H. Cohen, C. Fletcher +16
Magnetic B-type stars exhibit photometric variability due to diverse causes, and consequently on a variety of timescales. In this paper we describe interpretation of BRITE photomet…
The BRITE-Constellation Nanosatellite Space Mission And Its First Scientific Results
G. Handler, A. Pigulski, W. W. Weiss +15
The BRIght Target Explorer (BRITE) Constellation is the first nanosatellite mission applied to astrophysical research. Five satellites in low-Earth orbits perform precise optical t…
The magnetic field of the double-lined spectroscopic binary system HD 5550
E. Alecian, A. Tkachenko, C. Neiner +3
(Abridged) In the framework of the BinaMicS project, we have begun a study of the magnetic properties of a sample of intermediate-mass and massive short-period binary systems, as a…
An infrared diagnostic for magnetism in hot stars
M. E. Oksala, J. H. Grunhut, M. Kraus +5
Magnetospheric observational proxies are used for indirect detection of magnetic fields in hot stars in the X-ray, UV, optical, and radio wavelength ranges. To determine the viabil…
Search for magnetic fields in particle-accelerating colliding-wind binaries
C. Neiner, J. Grunhut, B. Leroy +2
Some colliding-wind massive binaries, called particle-accelerating colliding-wind binaries (PACWB), exhibit synchrotron radio emission, which is assumed to be generated by a stella…
A search for Vega-like fields in OB stars
C. Neiner, C. P. Folsom, A. Blazere
Very weak magnetic fields (with a longitudinal component below 1 Gauss) have recently been discovered in the A star Vega as well as in a few Am stars. According to fossil field sce…
gamma Peg: testing Vega-like magnetic fields in B stars
C. Neiner, D. Monin, B. Leroy +2
gam Peg is a bright B pulsator showing both p and g modes of beta Cep and SPB types. It has also been claimed to be a magnetic star by some authors while others do not detect a mag…
The magnetic characteristics of Galactic OB stars from the MiMeS survey of magnetism in massive stars
G. A. Wade, J. Grunhut, E. Alecian +11
The Magnetism in Massive Stars (MiMeS) project represents the largest systematic survey of stellar magnetism ever undertaken. Based on a sample of over 550 Galactic B and O-type st…
Discovery of the magnetic field in the pulsating B star beta Cephei
H. F. Henrichs, J. A. de Jong, E. Verdugo +17
Although the star itself is not He enriched, the periodicity and the variability in the UV wind lines of the pulsating B1 IV star beta Cep are similar to what is observed in magnet…
Discovery of a magnetic field in the rapidly-rotating O-type secondary of the colliding-wind binary HD 47129 (Plaskett's star)
J. H. Grunhut, G. A. Wade, M. Leutenegger +14
We report the detection of a strong, organized magnetic field in the secondary component of the massive O8III/I+O7.5V/III double-lined spectroscopic binary system HD 47129 (Plasket…
NGC 1624-2: A slowly rotating, X-ray luminous Of?cp star with an extraordinarily strong magnetic field
G. A. Wade, J. Maíz Apellániz, F. Martins +16
This paper presents a first observational investigation of the faint Of?cp star NGC 1624-2, yielding important new constraints on its spectral and physical characteristics, rotatio…
Revisiting the Rigidly Rotating Magnetosphere model for sigma Ori E. I. Observations and Data Analysis
M. E. Oksala, G. A. Wade, R. H. D. Townsend +6
We have obtained 18 new high-resolution spectropolarimetric observations of the B2Vp star sigma Ori E with both the Narval and ESPaDOnS spectropolarimeters. The aim of these observ…
CoRoT\,102699796, the first metal-poor Herbig Ae pulsator: a hybrid Sct- Dor variable?
V. Ripepi, F. Cusano, M. Di Criscienzo +7
We present the analysis of the time series observations of CoRoT\,102699796 obtained by the CoRoT satellite that show the presence of five independent oscillation frequencies in th…