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8 papers · 2 filters
The MiMeS survey of magnetism in massive stars: Magnetic analysis of the O-type stars
J. H. Grunhut, G. A. Wade, C. Neiner +9
We present the analysis performed on spectropolarimetric data of 97 O-type targets included in the framework of the MiMeS (Magnetism in Massive Stars) Survey. Mean Least-Squares De…
HD 164492C: a rapidly-rotating, H-bright, magnetic early B star associated with a 12.5d spectroscopic binary
G. A. Wade, M. Shultz, J. Sikora +6
We employ high resolution spectroscopy and spectropolarimetry to derive the physical properties and magnetic characteristics of the multiple system HD 164492C, located in the young…
Dynamical Mass Measurement of the Young Spectroscopic Binary V343 Normae AaAb Resolved With the Gemini Planet Imager
Eric L. Nielsen, Robert J. De Rosa, Jason Wang +44
We present new spatially resolved astrometry and photometry from the Gemini Planet Imager of the inner binary of the young multiple star system V343 Normae, which is a member of th…
An active, asynchronous companion to a redback millisecond pulsar
André van Staden, John Antoniadis
PSR\,J17232837 is a "redback" millisecond pulsar (MSP) with a low-mass companion in a 14.8\,h orbit. The system's properties closely resemble those of "transitional" MSPs that a…
Stellar atmospheres, atmospheric extension and fundamental parameters: weighing stars using the stellar mass index
Hilding R. Neilson, Fabien Baron, Ryan Norris +2
One of the great challenges in understanding stars is measuring their masses. The best methods for measuring stellar masses include binary interaction, asteroseismology and stellar…
Chemical Abundances in a Sample of Red Giants in the Open Cluster NGC 2420 from APOGEE
Diogo Souto, Katia Cunha, Verne Smith +20
NGC 2420 is a 2 Gyr-old well-populated open cluster that lies about 2 kpc beyond the solar circle, in the general direction of the Galactic anti-center. Most previous abundan…