48 citations · 127 across the 17 of their papers we have counts for
18 papers
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…
The deep eclipses of RW Aur revisited by long-term photometric and spectroscopic monitoring
O. Lux, M. Mugrauer, R. Bischoff
RW Aurigae is a young stellar system containing a classical T Tauri star as the primary component. It shows deep, irregular dimmings, first detected in 2010. At the University Obse…
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…
The origin of the high-mass X-ray binary 4U 2206+54/BD +53 2790
V. Hambaryan, K. A. Stoyanov, M. Mugrauer +7
Based on the Gaia EDR3 astrometric parameters and our new systemic radial velocity of the high-mass X-ray binary 4U 2206+54/BD+53 2790, we studied the trace back motion of the syst…
Identification of additional young nearby runaway stars based on Gaia data release 2 observations and the lithium test
R. Bischoff, M. Mugrauer, G. Torres +4
Runaway stars are characterised by their remarkably high space velocities, and the study of their formation mechanisms has attracted considerable interest. Young, nearby runaway st…
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…
A search for runaway stars in twelve Galactic supernova remnants
O. Lux, R. Neuhäuser, M. Mugrauer +1
Runaway stars can result from core-collapse supernovae in multiple stellar systems. If the supernova disrupts the system, the companion gets ejected with its former orbital velocit…
Spectroscopic orbit determination of the long-periodic binary system Cep
R. Bischoff, M. Mugrauer, O. Lux +4
In 2015 a radial velocity monitoring campaign was started in order to redetermine and/or constrain the orbital solutions of spectroscopic binary systems. The observations were carr…
Identification of young nearby runaway stars based on Gaia data and the lithium test
R. Bischoff, M. Mugrauer, G. Torres +6
Young nearby runaway stars are suitable to search for their place of origin and possibly associated objects, for example neutron stars. Tetzlaff, Neuhäuser & Hohle (2011) selected…
Gaia 18dvy: a new FUor in the Cygnus OB3 association
E. Szegedi-Elek, P. Ábrahám, L. Wyrzykowski +59
We present optical-infrared photometric and spectroscopic observations of Gaia18dvy, located in the Cygnus OB3 association at a distance of 1.88 kpc. The object was noted by the Ga…
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…
Spectroscopic characterization of nine binary star systems as well as HIP107136 and HIP107533
T. Heyne, M. Mugrauer, R. Bischoff +6
We present the results of our 2nd radial velocity monitoring campaign, carried out with the Échelle spectrograph FLECHAS at the University Observatory Jena in the course of the Gro…
Diagnosing the Clumpy Protoplanetary Disk of the UXor Type Young Star GM Cephei
P. C. Huang, W. P. Chen, M. Mugrauer +29
UX Orionis stars (UXors) are Herbig Ae/Be or T Tauri stars exhibiting sporadic occultation of stellar light by circumstellar dust. GM\,Cephei is such a UXor in the young (~M…
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…
The Radial and Rotational Velocity of Ophiuchi
T. Zehe, M. Mugrauer, R. Neuhäuser +5
We present the results of our spectroscopic monitoring campaign of Oph, carried out at the University observatory Jena with the spectrograph FLECHAS between July 2015 and Septe…
Radial velocity measurements and orbit determination of eight single-lined spectroscopic binary systems
R. Bischoff, M. Mugrauer, T. Zehe +7
Since early 2015 a new radial velocity monitoring campaign is going on at the University Observatory Jena. The aim of this project is to obtain current radial velocity measurements…