136 citations · 870 across the 34 of their papers we have counts for
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Differential rotation on the young solar analogue V889 Herculis
Zsolt Kovari, Antonio Frasca, Katia Biazzo +3
V889 Herculis is one of the brightest single early-G type stars, a young Sun, that is rotating fast enough (P_rot =1.337 days) for mapping its surface by Doppler Imaging. The 10 FO…
Surface evolution in stable magnetic fields: the case of the fully convective dwarf V374 Peg
K. Vida, K. Oláh, Zs. Kovari
We present BV(RI)_C photometric measurements of the dM4-type V374 Peg covering ~430 days. The star has a mass of ~0.28M_Sun, so it is supposed to be fully convective. Previous obse…
Photospheric and chromospheric activity on the young solar-type star HD 171488
A. Frasca, K. Biazzo, Zs. Kovari +2
We present the results of contemporaneous spectroscopic and photometric monitoring of the young solar-type star HD171488 (Prot~1.337 d) aimed at studying surface inhomogeneities at…
Ellipsoidal primary of the RS CVn binary zeta And: Investigation using high-resolution spectroscopy and optical interferometry
H. Korhonen, M. Wittkowski, Zs. Kovari +3
We have obtained high-resolution spectroscopy, optical interferometry, and long-term broad band photometry of the ellipsoidal primary of the RS CVn-type binary system zeta And. Bas…