Publications (10)
Asteroseismology of the Nearby SN-II Progenitor: Rigel Part I. The MOST High Precision Photometry and Radial Velocity Monitoring
Ehsan Moravveji, Edward F. Guinan, Matt Shultz +2
Rigel (beta Ori, B8 Ia) is a nearby blue supergiant displaying alpha Cyg type variability, and is one of the nearest type-II supernova progenitors. As such it is an excellent test…
HD 35502: a hierarchical triple system with a magnetic B5IVpe primary
James Sikora, Gregg Wade, David Bohlender +8
We present our analysis of HD~35502 based on high- and medium-resolution spectropolarimetric observations. Our results indicate that the magnetic B5IVsnp star is the primary compon…
CMa: An Extremely Slowly Rotating Magnetic B0.7 IV Star
Matt Shultz, Gregg Wade, Thomas Rivinius +4
We present our analysis of 6 years of ESPaDOnS spectropolarimetry of the magnetic Cep star CMa (B0.7 IV). This high-precision magnetometry is consistent with a rotation…
Discovery of a Centrifugal Magnetosphere Around the He-Strong Magnetic B1 Star ALS 3694
Matt Shultz, Gregg Wade, Thomas Rivinius +2
We report the results of 6 nights of Canada-France-Hawaii Telescope spectropolarimetric ESPaDOnS observations of the He-strong, magnetic B1 type star ALS 3694. The longitudinal mag…
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…
PolStar -- An Explorer-Class FUV Spectropolarimetry Mission to Map the Environments of Massive Stars
Paul Scowen, Richard Ignace, Coralie Neiner +26
PolStar is an Explorer-class far ultraviolet (FUV) spectropolarimetry mission designed to target massive stars and their environments. PolStar will take advantage of resonance line…
Emission from the Centrifugal Magnetospheres of Magnetic B-type Stars
Matt Shultz, Gregg Wade, Thomas Rivinius +2
Approximately 10% of B-type stars possess strong magnetic fields, and of these, 25% host centrifugal magnetospheres (CMs) in which the radiative wind, magnetic field, and rotationa…
Confirming HD 23478 as a new magnetic B star hosting an H-bright centrifugal magnetosphere
James Sikora, Gregg Wade, David Bohlender +11
In this paper we report 23 magnetic field measurements of the B3IV star HD 23478: 12 obtained from high resolution Stokes spectra using the ESPaDOnS (CFHT) and Narval (TBL) spe…
Evolving pulsation of the slowly rotating magnetic beta Cep star xi 1 CMa
Sean B. Begy, Gregg A. Wade, Gerald Handler +3
We report BRITE-Constellation photometry of the beta Cep pulsator xi 1 CMa. Analysis of these data reveals a single pulsation period of 0.2095781(3) d, along with its first and sec…
Plasma Leakage from the Centrifugal Magnetospheres of Magnetic B-Type Stars
Matt Shultz, Gregg Wade, Thomas Rivinius +3
Magnetic B-type stars are often host to Centrifugal Magnetospheres (CMs). Here we describe the results of a population study encompassing the full sample of known magnetic early B-…