128 citations · 1k across the 32 of their papers we have counts for
32 papers
Confident Detection of Doubly-Ionized Thorium in the Extreme Ap Star CPD-62 2717
S. Drew Chojnowski, Swetlana Hubrig, David L. Nidever +4
Despite the universe containing primordial thorium (Th) of sufficient abundance to appear in stellar spectra, detection of Th has to date been tentative and based on just a few wea…
HD 213258: a new rapidly oscillating, super-slowly rotating, strongly magnetic Ap star in a spectroscopic binary
Gautier Mathys, Viktor Khalack, Oleksandr Kobzar +2
We report about HD 213258, an Ap star that we recently identified as presenting a unique combination of rare, remarkable properties. Our study of this star is based on ESPaDOnS Sto…
Analysis of eight magnetic chemically peculiar stars with rotational modulation
O. Kobzar, V. Khalack, D. Bohlender +9
Since the end of 2018, the Transiting Exoplanet Survey Satellite (TESS) has provided stellar photometry to the astronomical community. We have used TESS data to study rotational mo…
Long-period Ap stars discovered with TESS data: The northern ecliptic hemisphere
G. Mathys, D. W. Kurtz, D. L. Holdsworth
The rotation periods of the magnetic Ap stars span five to six orders of magnitude. Period differentiation must have taken place at the pre-main sequence stage, but the physical pr…
The anomalous atmospheric structure of the strongly magnetic Ap star HD166473
S. P. Järvinen, S. Hubrig, G. Mathys +3
High resolution spectropolarimetric observations of the strongly magnetic, super-slowly rotating rapidly oscillating Ap star HD166473 are used to investigate the implications of th…
The near-infrared companion to HD94660 (=KQ Vel)
M. Schöller, C. A. Hummel, S. Hubrig +4
The Bp star HD94660 is a single-lined spectroscopic binary. Some authors have suggested that the unseen companion of at least 2M_sun may be a compact object. We intend to study thi…