170 citations · 1.2k across the 47 of their papers we have counts for
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HARPS spectropolarimetry of three sharp-lined Herbig Ae stars: New insights
S. P. Järvinen, T. A. Carroll, S. Hubrig +5
Several arguments have been presented that favour a scenario in which the low detection rate of magnetic fields in Herbig Ae stars can be explained by the weakness of these fields…
Transmission spectroscopy of the inflated exo-Saturn HAT-P-19b
M. Mallonn, C . von Essen, J. Weingrill +7
We observed the Saturn-mass and Jupiter-sized exoplanet HAT-P-19b to refine its transit parameters and ephemeris as well as to shed first light on its transmission spectrum. We mon…
PEPSI: The high-resolution echelle spectrograph and polarimeter for the Large Binocular Telescope
K. G. Strassmeier, I. Ilyin, A. Järvinen +26
PEPSI is the bench-mounted, two-arm, fibre-fed and stabilized Potsdam Echelle Polarimetric and Spectroscopic Instrument for the 2x8.4 m Large Binocular Telescope (LBT). Three spect…
Spot evolution on the red giant star XX Triangulum. A starspot-decay analysis based on time-series Doppler imaging
A. Künstler, T. A. Carroll, K. G. Strassmeier
Solar spots appear to decay linearly proportional to their size. The decay rate of solar spots is directly related to magnetic diffusivity, which itself is a key quantity for the l…
Magnetic field measurements of Eridani from Zeeman broadening
L. T. Lehmann, A. Künstler, T. A. Carroll +1
We present new magnetic field measurements of the K2 main-sequence star Eridani based on principal components analysis (PCA) line-profile reconstructions. The aim of this paper…
The prevalence of weak magnetic fields in Herbig Ae stars: The case of PDS2
S. Hubrig, T. A. Carroll, M. Schöller +1
Models of magnetically driven accretion and outflows reproduce many observational properties of T Tauri stars, but the picture is much less clear for the Herbig Ae/Be stars, due to…