Publications (14)
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…
Investigating Ca II emission in the RS CVn binary ER Vulpeculae using the Broadening Function Formalism
Evgenya Shkolnik, Gordon Walker, Slavek Rucinski +2
The synchronously rotating G stars in the detached, short-period (0.7 d), partially eclipsing binary, ER Vul, are the most chromospherically active solar-type stars known. We have…
Spectropolarimetry with the DAO 1.8-m telescope
Dmitry Monin, David Bohlender
The fast-switching DAO spectropolarimeter mounted on the 1.8-m Plaskett telescope started operation in 2007. Almost 14,000 medium-resolution (R=15,000) polarimetric spectra of 65 O…
Identification of more interstellar C60+ bands
Gordon Walker, David Bohlender, John Maier +1
Based on gas-phase laboratory spectra at 6 K, Campbell et al. (2015) confirmed that the diffuse interstellar bands (DIBs) at 9632.7 and 9577.5A are due to absorption by the fullere…
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…
A Spectroscopic and Photometric Study of the Metal-Poor, Pulsating, Post-AGB Binary HD 46703
Bruce J. Hrivnak, Hans Van Winckel, Maarten Reyniers +3
The metal-poor post-AGB star HD 46703 is shown to be a single-line spectroscopic binary with a period of 600 days, a high velocity of -94 km/s, and an orbital eccentricity of 0.3.…