67 citations · 229 across the 11 of their papers we have counts for
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An investigation of the magnetic activity of HD 134319 based on TESS photometry and ground-based spectroscopy
Fukun Xu, Shenghong Gu, Panogiotis Ioannidis
We present analysis of the starspot properties and chromospheric activity on HD 134319 using high precision photometry by TESS in sectors 14-16 (T1), 21-23 (T2) and high-resolution…
Simultaneous eROSITA and TESS observations of the ultra-active star AB~Doradus
J. H. M. M. Schmitt, P. Ioannidis, J. Robradel +3
We present simultaneous multiwavelength observations of the ultra-active star AB~Doradus obtained in the X-ray range with the eROSITA instrument on board the Russian--German Spectr…
Keeping up with the cool stars: One TESS year in the life of AB Doradus
P. Ioannidis, J. H. M. M. Schmitt
The long-term, high precision photometry delivered by the Transiting Exoplanet Survey Satellite (TESS) enables us to gain new insight into known and hitherto well-studied stars. In…
Starspot evolution, Differential Rotation and Correlation between Chromospheric and Photospheric Activities on Kepler-411
Fukun Xu, Shenghong Gu, Panogiotis Ioannidis
We present an analysis of the starspot evolution, the surface differential rotation (SDR), the correlation between chromospheric activity indicators and the spatial connection betw…
Glimpses of stellar surfaces. I. Spot evolution and differential rotation of the planet host star Kepler-210
P. Ioannidis, J. H. M. M. Schmitt
We use high accuracy photometric data obtained with the Kepler satellite to monitor the activity modulations of the Kepler-210 planet host star over a time span of more than four y…