36 citations · 129 across the 10 of their papers we have counts for
6 papers · 1 filter
Antisolar differential rotation of the K1-giant sigma Geminorum revisited
Zs. Kovari, L. Kriskovics, A. Künstler +6
Context. Surface differential rotation and other global surface flows on magnetically active stars are among the observable manifestations of the stellar dynamo working underneath.…
Surface differential rotation of IL Hya from time-series Doppler images
Zsolt Kővári, Levente Kriskovics, Katalin Oláh +4
We present a time-series Doppler imaging study of the K-subgiant component in the RS CVn-type binary system IL Hya (P orb=12.905 d). From re-processing the unique long-term spectro…
On the reliability of measuring differential rotation of spotted stars
Zsolt Kővári, János Bartus, Levente Kriskovics +2
Cross-correlation of consecutive Doppler images is one of the most common techniques used to detect surface differential rotation (hereafter DR) on spotted stars. The disadvantage…
First Results of The Konkoly Blazhko Survey II
Á. Sódor, J. Jurcsik, L. Molnár +17
The two parts of the Konkoly Blazhko Survey (KBS I and II) are introduced. The most important preliminary findings of the second part are presented in comparison to the results of…
Binary-induced magnetic activity? Time-series echelle spectroscopy and photometry of HD123351 = CZ CVn
K. G. Strassmeier, T. A. Carroll, M. Weber +4
We present a first and detailed study of the bright and active K0IV-III star HD 123351. The star is found to be a single-lined spectroscopic binary with a period of 147.8919+-0.000…
Photospheric and chromospheric activity in V405 And: An M dwarf binary with components on the two sides of the full convection limit
K. Vida, K. Oláh, Zs. Kővári +4
We investigate the fast-rotating (P_orb=P_rot=0.465d), active dwarf binary V405 And (M0V+M5V) using photometric BV(RI)_C and optical spectroscopic data. The light variation is caus…