73 citations · 452 across the 43 of their papers we have counts for
8 papers · 1 filter
Mapping EK Draconis with PEPSI - Possible evidence for starspot penumbrae
S. P. Järvinen, K. G. Strassmeier, T. A. Carroll +2
We present the first temperature surface map of EK Dra from very-high-resolution spectra obtained with the Potsdam Echelle Polarimetric and Spectroscopic Instrument (PEPSI) at the…
On the origin of supergiant fast X-ray transients
Swetlana Hubrig, Lara Sidoli, Konstantin A. Postnov +3
A fraction of high-mass X-ray binaries are supergiant fast X-ray transients. These systems have on average low X-ray luminosities, but display short flares during which their X-ray…
Studying the presence of magnetic fields in a sample of high-mass X-ray binaries
Swetlana Hubrig, Alexander F. Kholtygin, Lara Sidoli +2
Previous circular polarization observations obtained with the ESO FOcal Reducer low dispersion spectrograpgh at the VLT in 2007-2008 revealed the presence of a weak longitudinal ma…
Early B-type stars with resolved Zeeman split lines
S. Hubrig, S. P. Jarvinen, M. Schöller +1
Almost three decades ago, Mathys (1990) demonstrated the importance of studying Ap stars showing resolved Zeeman split Fe II 6147.7 and 6149.2 lines. Such Zeeman split lines can be…
A magnetic study of the Scuti variable HD 21190 and the close solar-type background star CPD -83 64B
S. P. Järvinen, S. Hubrig, R. -D. Scholz +3
HD 21190 is a known Scuti star showing Ap star characteristics and a variability period of 3.6 h discovered by the Hipparcos mission. Using Gaia DR1 data for an astrometric ana…
HD 149277: a rare short-period SB2 system with a subsynchronously rotating magnetic He-rich primary
J. F. González, S. Hubrig, S. P. Järvinen +1
HD 149277 is a rare SB2 system with a slowly rotating magnetic He-rich primary with d. The CFHT/ESPaDOnS archive spectra revealed $P_{\rm orb}=11.5192 \pm 0.0005…
Weak Magnetic Fields in Two Herbig Ae Systems: The SB2 AK Sco and the Presumed Binary HD 95881
S. P. Järvinen, T. A. Carroll, S. Hubrig +9
We report the detection of weak mean longitudinal magnetic fields in the Herbig Ae double-lined spectroscopic binary AK Sco and in the presumed spectroscopic Herbig Ae binary HD958…
The magnetic variability of the ~Cep star \,CMa
S. P. Järvinen, S. Hubrig, M. Schöller +1
CMa is a known magnetic star showing rotationally modulated magnetic variability with a period of 2.17937 d. However, recent work based on high-resolution spectropolarimetr…