Zobrazeno 1 - 10
of 119
pro vyhledávání: '"Tsymbal, V P"'
Eclipsing, spectroscopic double-lined (SB2) binaries remain to be the prime source of precise and accurate fundamental properties of stars. Furthermore, high-cadence spectroscopic observations of the eclipse phases allow us to resolve the Rossiter-Mc
Externí odkaz:
http://arxiv.org/abs/2208.03072
We performed a detailed spectroscopic study of the SB2 system HD 60803 based on high-resolution spectra obtained with the different spectrographs. The analysis was done with two independent methods: a) the direct modelling of the observed binary spec
Externí odkaz:
http://arxiv.org/abs/2110.02637
Publikováno v:
A&A 644, A121 (2020)
RZ Cas is a short-period Algol-type system showing episodes of mass transfer and Delta Sct-like oscillations of its mass-gaining primary component. We analyse high-resolution spectra of RZ Cas that we obtained during a spectroscopic long-term monitor
Externí odkaz:
http://arxiv.org/abs/2011.07903
Autor:
Tkachenko, A., Pavlovski, K., Johnston, C., Pedersen, M. G., Michielsen, M., Bowman, D. M., Southworth, J., Tsymbal, V., Aerts, C.
(Abridged) Eclipsing, spectroscopic double-lined binary star systems (SB2) are excellent laboratories for calibrating theories of stellar interior structure and evolution. We aim to investigate the mass discrepancy in binary stars. We study the effec
Externí odkaz:
http://arxiv.org/abs/2003.08982
Publikováno v:
A&A 615, A131 (2018)
R Canis Majoris is the prototype of a small group of Algol-type stars showing short orbital periods and low mass ratios. A previous detection of short-term oscillations in its light curve has not yet been confirmed. We investigate a new time series o
Externí odkaz:
http://arxiv.org/abs/1804.04530
We present a radial velocity analysis of 20 solar neighborhood RR Lyrae and 3 Population II Cepheids variables. We obtained high-resolution, moderate-to-high signal-to-noise ratio spectra for most stars and obtained spectra were covering different pu
Externí odkaz:
http://arxiv.org/abs/1711.05728
Autor:
Ryabchikova, T., Piskunov, N., Pakhomov, Yu., Tsymbal, V., Titarenko, A., Sitnova, T., Alexeeva, S., Fossati, L., Mashonkina, L.
We performed extensive tests of the accuracy of atmospheric parameter determination for FGK stars based on the spectrum fitting procedure Spectroscopy Made Easy (SME). Our stellar sample consists of 13 objects, including the Sun, in the temperature r
Externí odkaz:
http://arxiv.org/abs/1511.06134
Autor:
Yakunin, I., Wade, G., Bohlender, D., Kochukhov, O., Marcolino, W., Shultz, M., Monin, D., Grunhut, J., Sitnova, T., Tsymbal, V., Collaboration, the MiMeS
A new time series of high-resolution Stokes I and V spectra of the magnetic B2V star HD 184927 has been obtained in the context of the Magnetism in Massive Stars (MiMeS) Large Program with the ESPaDOnS spectropolarimeter at the Canada-France-Hawaii T
Externí odkaz:
http://arxiv.org/abs/1411.5789
Autor:
Fossati, L., Kolenberg, K., Shulyak, D. V., Elmasli, A., Tsymbal, V., Barnes, T. G., Guggenberger, E., Kochukhov, O.
The stellar parameters of RR Lyrae stars vary considerably over a pulsation cycle, and their determination is crucial for stellar modelling. We present a detailed spectroscopic analysis of the pulsating star RR Lyr, the prototype of its class, over a
Externí odkaz:
http://arxiv.org/abs/1410.4380
Autor:
Tkachenko, A., Degroote, P., Aerts, C., Pavlovski, K., Southworth, J., Papics, P. I., Moravveji, E., Kolbas, V., Tsymbal, V., Debosscher, J., Clemer, K.
We present a detailed analysis and interpretation of the high-mass binary V380 Cyg, based on high-precision space photometry gathered with the Kepler space mission as well as high-resolution ground-based spectroscopy obtained with the HERMES spectrog
Externí odkaz:
http://arxiv.org/abs/1312.3601