Zobrazeno 1 - 10
of 618
pro vyhledávání: '"Liška J"'
Autor:
Wolf, M., Zasche, P., Kára, J., Zejda, M., Janík, J., Mašek, M., Lehký, M., Merc, J., Richterková, A., Hanžl, D., Mikulášek, Z., de Villiers, S. N., Liška, J.
New ground-based and space-based photometric data have been obtained and archival spectroscopic measurements were used in this study of three detached early-type and southern-hemisphere eccentric eclipsing binaries GM Nor (P = 1.88 d, e = 0.05), V397
Externí odkaz:
http://arxiv.org/abs/2408.06910
Autor:
Skarka, M., Žák, J., Fedurco, M., Paunzen, E., Henzl, Z., Mašek, M., Karjalainen, R., Arias, J. P. Sanchez, Sódor, Á., Auer, R. F., Kabáth, P., Karjalainen, M., Liška, J., Štegner, D.
Publikováno v:
A&A 666, A142 (2022)
The goal of our study is to provide a reliable classification of variability of A-F stars brighter than 11 mag located in the northern TESS continuous viewing zone. We also aim at thorough discussion about issues in the classification related to the
Externí odkaz:
http://arxiv.org/abs/2207.12922
Autor:
Shafter, A. W., Hornoch, K., Benáček, J., Galád, A., Janík, J., Juryšek, J., Kotková, L., Kurfürst, P., Kučáková, H., Kušnirák, P., Liška, J., Paunzen, E., Skarka, M., Škoda, P., Wolf, M., Zasche, P., Zejda, M.
The results of the first synoptic survey of novae in the barred spiral and starburst galaxy, M83 (NGC 5236), are presented. A total of 19 novae and one background supernova were discovered during the course of a nearly seven-year survey comprised of
Externí odkaz:
http://arxiv.org/abs/2110.00676
Autor:
Bakis, V., Mikulasek, Z., Janik, J., Zejda, M., Tunc, E., Nitschelm, C., Bilir, S., Liska, J., Bakis, H.
The early-type massive binary MQ Cen (P$_{orb}$=3.7 d) has been investigated by means of high-resolution ($R\sim48\,000$) spectral analysis and multi-band (Johnson $BVRI$ and Str\"{o}mgren $vby$) light curve modeling. The physical parameters of the c
Externí odkaz:
http://arxiv.org/abs/1906.01913
We present 20 newly discovered candidates for binary systems with an RR~Lyrae companion. Using the photometric data from the Optical Gravitational Lensing Experiment (OGLE) and Korea Microlensing Telescope Network (KMTNet) for the Galactic bulge, we
Externí odkaz:
http://arxiv.org/abs/1905.11878
Many RR Lyrae stars show long-term variations of their pulsation period, some of them in a cyclic way. Such behaviour can be attributed to the light-travel time effect (LTTE) caused by an unseen companion. Solutions of the LTTE often suggest very ecc
Externí odkaz:
http://arxiv.org/abs/1809.03230
Autor:
Skarka, M., Liška, J., Dřevěný, R., Guggenberger, E., Sódor, Á., Barnes, T. G., Kolenberg, K.
We present a comprehensive study of Z CVn, an RR Lyrae star that shows long-term cyclic variations of its pulsation period. A possible explanation suggested from the shape of the O-C diagram is the light travel-time effect, which we thoroughly examin
Externí odkaz:
http://arxiv.org/abs/1710.06709
Autor:
Juryšek, J., Zasche, P., Wolf, M., Vraštil, J., Vokrouhlický, D., Skarka, M., Liška, J., Janík, J., Zejda, M., Kurfürst, P., Paunzen, E.
Publikováno v:
A&A 609, A46 (2018)
Context: Multiple stellar systems are unique laboratories for astrophysics. Analysis of their orbital dynamics may reveal invaluable information about the physical properties of the participating stars. Unfortunately, there are only a few known and w
Externí odkaz:
http://arxiv.org/abs/1709.08087
In this contribution, we summarize the progress made in the investigation of binary candidates with an RR Lyrae component in 2016. We also discuss the actual status of the RRLyrBinCan database.
Comment: submitted to Proceedings of the 48th Confe
Comment: submitted to Proceedings of the 48th Confe
Externí odkaz:
http://arxiv.org/abs/1701.05719
We report the discovery of a new Kepler first-overtone RR Lyrae pulsator, KIC 2831097. The pulsation shows large, 0.1 d amplitude, systematic phase variations that can be interpreted as light travel-time effect caused by orbital motion in a binary sy
Externí odkaz:
http://arxiv.org/abs/1609.06474