629 citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Goddard Space Flight CenterUS56 papers
- University of PennsylvaniaUS48 papers
- Princeton UniversityUS46 papers
- Pontificia Universidad Católica de ChileCL38 papers
- University of California, BerkeleyUS38 papers
- University of KwaZulu-NatalZA37 papers
- University of PittsburghUS37 papers
- University of TorontoCA37 papers
- Rutgers, The State University of New JerseyUS36 papers
- University of British ColumbiaCA36 papers
- Canadian Institute for Theoretical AstrophysicsCA35 papers
- National Institute of Standards and TechnologyUS35 papers
36 papers · 1 filter
Modeling Magnetically Channeled Winds in 3D: I. Isothermal Simulations of a Magnetic O Supergiant
Sethupathy Subramanian, Dinshaw S. Balsara, Asif ud-Doula +1
In this paper we present the first set of 3D magnetohydrodynamic (MHD) simulations performed with the riemann geomesh code. We study the dynamics of the magnetically channeled wind…
3D MHD models of the centrifugal magnetosphere from a massive star with an oblique dipole field
Asif ud-Doula, Stanley P. Owocki, Christopher Russell +2
We present results from new self-consistent 3D MHD simulations of the magnetospheres from massive stars with a dipole magnetic axis that has a non-zero obliquity angle () to the…
X-ray properties of early-type stars in the Tarantula Nebula from T-ReX
Paul A Crowther, Patrick S Broos, Leisa K Townsley +3
We reassess the historical relation for early-type stars from a comparison between T-ReX, the Chandra ACIS X-ray survey of the Tarantula Nebula in the LMC, and cont…
Helium-like X-ray line complexes show that the hottest plasma on the O supergiant zeta Puppis is in its wind
David H. Cohen, Ariel M. Overdorff, Maurice A. Leutenegger +3
We present an analysis of Chandra grating spectra of key helium-like line complexes to put constraints on the location with respect to the photosphere of the hottest ($T \gtrsim{6…
A JVLA survey of the high frequency radio emission of the massive magnetic B- and O-type stars
Sushma Kurapati, Poonam Chandra, Gregg Wade +10
We conducted a survey of seven magnetic O and eleven B-type stars with masses above using the Very Large Array in the 1cm, 3cm and 13cm bands. The survey resulted in a…
X-ray emission from the giant magnetosphere of the magnetic O-type star NGC 1624-2
V. Petit, D. H. Cohen, G. A. Wade +7
We observed NGC 1624-2, the O-type star with the largest known magnetic field Bp~20 kG), in X-rays with the ACIS-S camera onboard the Chandra X-ray Observatory. Our two observation…
A multi-wavelength view on the dusty Wolf-Rayet star WR 48a
Svetozar A. Zhekov, Toma Tomov, Marcin P. Gawronski +5
We present results from the first attempts to derive various physical characteristics of the dusty Wolf-Rayet star WR 48a based on a multi-wavelength view of its observational prop…
An Observational Evaluation of Magnetic Confinement in the Winds of BA Supergiants
M. Shultz, G. A. Wade, V. Petit +4
Magnetic wind confinement has been proposed as one explanation for the complex wind structures of supergiant stars of spectral types B and A. Observational investigation of this hy…
An X-rays Survey of the Young Stellar Population of the Lynds 1641 and Iota Orionis Regions
I. Pillitteri, S. J. Wolk, S. T. Megeath +12
We present an XMM-Newton survey of the part of Orion A cloud south of the Orion Nebula. This survey includes the Lynds 1641 (L1641) dark cloud, a region of the Orion A cloud with v…
Abrupt Longitudinal Magnetic Field Changes and Ultraviolet Emissions Accompanying Solar Flares
Brittany Johnstone, Gordon Petrie, Jeffrey Sudol
We have used Transition Region and Coronal Explorer (TRACE) 1600 Åimages and Global Oscillation Network Group (GONG) magnetograms to compare ultraviolet (UV) emissions from the chr…
A Magnetic Confinement vs. Rotation Classification of Massive-Star Magnetospheres
V. Petit, S. P. Owocki, G. A. Wade +12
Building on results from the Magnetism in Massive Stars (MiMeS) project, this paper shows how a two-parameter classification of massive-star magnetospheres in terms of the magnetic…
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…
Discovery of an Unusually Red L-type Brown Dwarf
John E. Gizis, Jacqueline K. Faherty, Michael C. Liu +6
We report the discovery of an unusually red brown dwarf found in a search for high proper motion objects using WISE and 2MASS data. WISEP J004701.06+680352.1 is moving at 0.44$ arc…
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…
Magnetometry of a sample of massive stars in Carina
Y. Naze, S. Bagnulo, V. Petit +4
X-ray surveys of the Carina nebula have revealed a few hard and luminous sources associated with early-type stars. Such unusual characteristics for the high-energy emission may be…
First HARPSpol discoveries of magnetic fields in massive stars
E. Alecian, O. Kochukhov, C. Neiner +14
In the framework of the Magnetism in Massive Stars (MiMeS) project, a HARPSpol Large Program at the 3.6m-ESO telescope has recently started to collect high-resolution spectropolari…
Characterizing the magnetic fields of the first tau Sco analogues
V. Petit, O. Kochukhov, D. L. Massa +3
The B0.2 V magnetic star tau Sco stands out from the larger population of massive OB stars due to its high X-ray activity, peculiar wind diagnostics and complex magnetic field. Rec…
The spectral variability and magnetic field characteristics of the Of?p star HD 148937
G. A. Wade, J. Grunhut, G. Graefener +11
We report magnetic and spectroscopic observations and modeling of the Of?p star HD 148937 within the context of the MiMeS LP at the CFHT. Thirty-two high signal-to-noise ratio circ…
HR 5907: Discovery of the most rapidly rotating magnetic B-type star by the MiMeS Collaboration
J. H. Grunhut, Th. Rivinius, G. A. Wade +15
We report the discovery and analysis of a very strong magnetic field in the rapidly rotating early B-type star HR 5907, based on observations obtained as part of the Magnetism in M…
A Chandra Observation of the TW Hydrae Association Brown Dwarf 2MASSW J1139511-315921
Philip J. Castro, John E. Gizis, Marc Gagné
We report on a sequence of Chandra X-ray Observatory observations of the TW Hydrae brown dwarf (BD) 2MASSW J1139511-315921 (2M1139). In the combined 31 ks ACIS-S exposure, 2M1139 i…
Chandra X-ray spectroscopy of the very early O supergiant HD 93129A: constraints on wind shocks and the mass-loss rate
David H. Cohen, Marc Gagné, Maurice A. Leutenegger +5
We present analysis of both the resolved X-ray emission line profiles and the broadband X-ray spectrum of the O2 If* star HD 93129A, measured with the Chandra HETGS. This star is a…
The Search for Low-mass Companions of B Stars in the Carina Nebula Cluster Trumpler 16
Nancy Remage Evans, Kathleen DeGioia-Eastwood, Marc Gagne +9
We have developed lists of likely B3--A0 stars (called "late B" stars) in the young cluster Trumpler 16. The following criteria were used: location within 3' of Eta Car, an appropr…
Carina OB Stars: X-ray Signatures of Wind Shocks and Magnetic Fields
Marc Gagne, Garrett Fehon, Michael R. Savoy +10
The Chandra Carina Complex contains 200 known O- and B type stars. The Chandra survey detected 68 of the 70 O stars and 61 of 127 known B0-B3 stars. We have assembled a publicly av…
The Chandra Carina Complex Project: Deciphering the Enigma of Carina's Diffuse X-ray Emission
Leisa K. Townsley, Patrick S. Broos, You-Hua Chu +11
We present a 1.42 square degree mosaic of diffuse X-ray emission in the Great Nebula in Carina from the Chandra X-ray Observatory Advanced CCD Imaging Spectrometer camera. After re…