89 citations · 120 across the 4 of their papers we have counts for
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astro-ph.SR2016★ 12 cited
The roAp star Circini as seen by BRITE-Constellation
W. W. Weiss, H. -E. Fröhlich, A. Pigulski +25
We report on an analysis of high-precision, multi-colour photometric observations of the rapidly-oscillating Ap (roAp) star Cir. These observations were obtained with the BRITE…
astro-ph.SR2012★ 18 cited
The solar differential rotation in the 18th century
R. Arlt, H. -E. Froehlich
The sunspot drawings of Johann Staudacher of 1749--1799 were used to determine the solar differential rotation in that period. These drawings of the full disk lack any indication o…
astro-ph.SR2011★ 89 cited
Magnetic activity and differential rotation in the very young star KIC 8429280
A. Frasca, H. -E. Fröhlich, A. Bonanno +3
We present a spectroscopic/photometric analysis of the rapid rotator KIC8429280, discovered by ourselves as a very young star and observed by the Kepler mission. We use spectroscop…