289 citations · 2k across the 88 of their papers we have counts for
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Activity on a Li-rich giant: DI Psc revisited
Levente Kriskovics, Zsolt Kővári, Krisztián Vida +1
We present a new Doppler imaging study for the Li-rich single K-giant DI Psc. Surface temperature maps are reconstructed for two subsequent rotation cycles. From the time evolution…
Doppler imaging of the double-lined active binary V824 Ara
Levente Kriskovics, Krisztián Vida, Zsolt Kővári +2
We introduce an iterative spectral disentangling technique combined with Doppler imaging in order to recover surface temperature maps for both components of double-lined active bin…
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…
A quest for activity cycles in low mass stars
K. Vida, L. Kriskovics, K. Oláh
Long-term photometric measurements in a sample of ultrashort-period (P~0.5 days or less) single and binary stars of different interior structures are analysed. A loose correlation…
The strange close binary V405 And: the influence of different dynamos on the components
K. Vida, L. Kriskovics, K. Oláh +1
V405 And is a fast-rotating (P=0.465d) grazing eclipsing binary with two active components. Using multicolor photometric monitoring and radial velocity measurements, we find that t…
Doppler imaging of stellar surface structure - XXIV. The lithium-rich single K-giants DP Canum Venaticorum and DI Piscium
Zs. Kovari, H. Korhonen, K. G. Strassmeier +3
We present the first Doppler imaging study of the two rapidly rotating, single K-giants DP CVn and DI Psc in order to study the surface spot configuration and to pinpoint their ste…