48 citations · 127 across the 17 of their papers we have counts for
7 papers · 1 filter
Search for Stellar Companions of Exoplanet Host Stars with AstraLux/CAHA 2.2 m
S. Schlagenhauf, M. Mugrauer, C. Ginski +3
Stellar multiplicity is a key aspect of exoplanet diversity, as the presence of more than one star in a planetary system can have both devastating and positive effects on its forma…
Search for planets in hot Jupiter systems with multi-sector TESS photometry. III. A study of ten systems enhanced with new ground-based photometry
G. Maciejewski, M. Fernández, A. Sota +12
The loneliness of hot Jupiters supports the high-eccentricity migration as a primary path leading to the formation of systems with those planets stripped of any close-in planetary…
Planet-star interactions with precise transit timing. III. Entering the regime of dynamical tides
G. Maciejewski, M. Fernandez, A. Sota +14
Hot Jupiters on extremely short-period orbits are expected to be unstable to tidal dissipation and spiral toward their host stars. That is because they transfer the angular momentu…
YETI follow-up observations of the T Tauri star CVSO30 with transit-like dips
R. Bischoff, St. Raetz, M. Fernández +13
The T Tauri star CVSO30, also known as PTFO8-8695, was studied intensively with ground based telescopes as well as with satellites over the last decade. It showed a variable light…
Follow-up spectroscopy of comet C/2020 F3 (NEOWISE)
Richard Bischoff, Markus Mugrauer
We present spectroscopy of the coma center of comet C/2020 F3 (NEOWISE), carried out at the end of July 2020 with the Échelle spectrograph FLECHAS at the University Observatory Jen…
Follow-up imaging observations of comet 2I/Borisov
M. Mugrauer, R. Bischoff, W. Stenglein +3
Follow-up imaging observations of the first detected interstellar comet 2I/Borisov are presented, which were carried out with the Schmidt-Teleskop-Kamera at the University Observat…
Planet-star interactions with precise transit timing. I. The refined orbital decay rate for WASP-12 b and initial constraints for HAT-P-23 b, KELT-1 b, KELT-16 b, WASP-33 b, and WASP-103 b
G. Maciejewski, M. Fernández, F. Aceituno +11
Theoretical calculations and some indirect observations show that massive exoplanets on tight orbits must decay due to tidal dissipation within their host stars. This orbital evolu…