Zobrazeno 1 - 10
of 1 289
pro vyhledávání: '"BISCHOFF, R"'
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 formation and evolution. In this paper, we present the results of a Lucky I
Externí odkaz:
http://arxiv.org/abs/2402.12299
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 Observatory Jena, we carried out optical follow-up observations. We perfor
Externí odkaz:
http://arxiv.org/abs/2312.17598
Autor:
Maciejewski, G., Fernández, M., Sota, A., Amado, P. J., Ohlert, J., Bischoff, R., Stenglein, W., Mugrauer, M., Michel, K. -U., Golonka, J., Solsona, A. Blanco, Lapena, E., Freire, J. Molins, Curieses, A. De los Ríos, Sicilia, J. A. Temprano
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 companions. Here we present the null results of searches for low-mass
Externí odkaz:
http://arxiv.org/abs/2307.00538
Autor:
Maciejewski, G., Fernandez, M., Sota, A., Amado, P. J., Dimitrov, D., Nikolov, Y., Ohlert, J., Mugrauer, M., Bischoff, R., Heyne, T., Hildebrandt, F., Stenglein, W., Arevalo, A. A., Neira, S., Riesco, L. A., Martinez, V. Sanchez, Verdugo, M. M.
Publikováno v:
A&A 667, A127 (2022)
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 momentum of the orbital motion through tidal dissipation into the stellar int
Externí odkaz:
http://arxiv.org/abs/2209.10597
Autor:
Bischoff, R., Raetz, St., Fernández, M., Mugrauer, M., Neuhäuser, R., Huang, P. C., Chen, W. P., Sota, A., Ortega, J. Jiménez, Hambaryan, V. V., Zieliński, P., Dróżdż, M., Ogłoza, W., Stenglein, W., Hohmann, E., Michel, K. -U.
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 curve with additional repeating planetary transit-like dips every ~0.8
Externí odkaz:
http://arxiv.org/abs/2201.12405
Autor:
Hambaryan, V., Stoyanov, K. A., Mugrauer, M., Neuhäuser, R., Stenglein, W., Bischoff, R., Michel, K. -U., Geymeier, M., Kurtenkov, A., Kostov, A.
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 system and propose that it originated in the subgroup of the Cepheus OB1 a
Externí odkaz:
http://arxiv.org/abs/2201.07770
Autor:
Bischoff, R., Mugrauer, M., Torres, G., Geymeier, M., Neuhäuser, R., Stenglein, W., Michel, K. -U.
Runaway stars are characterised by their remarkably high space velocities, and the study of their formation mechanisms has attracted considerable interest. Young, nearby runaway stars are the most favorable for identifying their place of origin, and
Externí odkaz:
http://arxiv.org/abs/2109.01511
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 velocity. A clear identification of a runaway star can yield the time and pla
Externí odkaz:
http://arxiv.org/abs/2101.05771
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 carried out at the University Observatory Jena with the \'Echelle spectrog
Externí odkaz:
http://arxiv.org/abs/2011.05241
Autor:
Bischoff, R., Mugrauer, M., Torres, G., Heyne, T., Lux, O., Munz, V., Neuhäuser, R., Hoffmann, S., Trepanovski, A.
Young nearby runaway stars are suitable to search for their place of origin and possibly associated objects, for example neutron stars. Tetzlaff, Neuh\"auser & Hohle (2011) selected young ($\le 50$ Myr) runaway star candidates from Hipparcos, for whi
Externí odkaz:
http://arxiv.org/abs/2009.02123