127 citations · 586 across the 10 of their papers we have counts for
6 papers
First measurement of the magnetic field on FK Com and its relation to the contemporaneous starspot locations
H. Korhonen, S. Hubrig, S. V. Berdyugina +5
In this study we present simultaneous low-resolution longitudinal magnetic field measurements and high-resolution spectroscopic observations of the cool single giant FK Com. The va…
Searching for links between magnetic fields and stellar evolution III. Measurement of magnetic fields in open cluster Ap stars with ESPaDOnS
J. D. Landstreet, J. Silaj, V. Andretta +7
We are carrying out a survey of magnetic fields in Ap stars in open clusters in order to obtain the first sample of magnetic upper main sequence stars with precisely known ages. Th…
First detection of polarized scattered light from an exoplanetary atmosphere
S. V. Berdyugina, A. V. Berdyugin, D. M. Fluri +1
We report the first direct detection of an exoplanet in the visible polarized light. The transiting planet HD189733b is one of the very hot Jupiters with shortest periods and, thus…
Hanle effect in the CN violet system with LTE modeling
A. I. Shapiro, S. V. Berdyugina, D. M. Fluri +1
Weak entangled magnetic fields with mixed polarity occupy the main part of the quiet Sun. The Zeeman effect diagnostics fails to measure such fields because of cancellation in circ…
A New Mechanism for Polarizing Light from Obscured Stars
J. R. Kuhn, S. V. Berdyugina, D. M. Fluri +2
Recent spectropolarimetric observations of Herbig AeBe stellar systems show linear polarization variability with wavelength and epoch near their obscured H-alpha emission. Surprisi…
Butterfly Diagram and Activity Cycles in HR 1099
S. V. Berdyugina, G. W. Henry
We analyze photometric data of the active RS CVn--type star HR 1099 for the years 1975--2006 with an inversion technique and reveal the nature of two activity cycles of 15--16 yr a…