Zobrazeno 1 - 10
of 23
pro vyhledávání: '"Zverko, Juraj"'
Autor:
Vaňko, Martin, Pribulla, Theodor, Gajdoš, Pavol, Budaj, Ján, Zverko, Juraj, Paunzen, Ernst, Garai, Zoltán, Hambálek, Lubomír, Komžík, Richard, Kundra, Emil
There is a small group of peculiar early-type stars on the main sequence that show different rotation velocities from different spectral lines. This inconsistency might be due to the binary nature of these objects. We aim to verify this hypothesis by
Externí odkaz:
http://arxiv.org/abs/2204.03325
Autor:
Mikulášek, Zdeněk, Krtička, Jiří, Janík, Jan, Zejda, Miloslav, Henry, Gegory W., Paunzen, Ernst, Žižňovský, Jozef, Zverko, Juraj
The majority of magnetic chemically peculiar (mCP) stars exhibit periodic light, magnetic, radio, and spectroscopic variations that can be adequately modelled as a rigidly-rotating main-sequence star with persistent surface structures. Nevertheless,
Externí odkaz:
http://arxiv.org/abs/1310.6640
Autor:
Mikulasek, Zdenek, Krticka, Jiri, Henry, Gregory W., Janik, Jan, Zverko, Juraj, Ziznovsky, Jozef, Zejda, Miloslav, Liska, Jiri, Zverina, Pavel, Kudryavtsev, Dmitry O., Romanyuk, Iosif I., Sokolov, Nikolay A., Lüftinger, Theresa, Trigilio, Corrado, Neiner, Coralie, de Villiers, Stephanus N.
Publikováno v:
A&A 534, L5 (2011)
CU Vir and V901 Ori belong among these few magnetic chemically peculiar stars whose rotation periods vary on timescales of decades. We aim to study the stability of the periods in CU Vir and V901 Ori using all accessible observational data containing
Externí odkaz:
http://arxiv.org/abs/1110.1104
Autor:
Mikulasek, Zdenek, Krticka, Jiri, Janik, Jan, Zverko, Juraj, Ziznovsky, Jozef, Zverina, Pavel, Zejda, Miloslav
Photometrically and spectroscopically variable chemically peculiar (CP) stars are the optimum laboratories for testing the rotational evolution of main sequence stars. A vast majority of well-studied CP stars have quite steady rotational periods (e.g
Externí odkaz:
http://arxiv.org/abs/1106.4258
Autor:
Mikulasek, Zdenek, Szasz, Gabriel, Krticka, Jiri, Zverko, Juraj, Ziznovsky, Jozef, Zejda, Miloslav, Graf, Tomas
Publikováno v:
XVI. Ulusal astronomi kongresi, V. Ulusal ogrenci astronomi kongresi. Canakkale - Turecko : Canakkale Onsekiz Mart Universitesi Yamlari, 2008, pp. 908-920, ISBN 975-8100-33-5
Magnetic chemically peculiar (mCP) stars of the upper part of the main sequence usually exhibit strictly periodic variations of their light, spectrum and magnetic field. These changes can be well explained using the oblique rotator model of the rigid
Externí odkaz:
http://arxiv.org/abs/0905.2565
Autor:
Janík, Jan, Krtička, Jiří, Mikulášek, Zdeněk, Zverko, Juraj, Pintado, Olga, Paunzen, Ernst, Prvák, Milan, Skalický, Jan, Zejda, Miloslav, Adam, Christian
Publikováno v:
Publications of the Astronomical Society of the Pacific, 2018 May 01. 130(987), 1-11.
Externí odkaz:
https://www.jstor.org/stable/26660586
We calculate the uvby light curves of the helium-strong chemically peculiar (CP) star HD 37776. Assuming that the chemical peculiarity influences the monochromatic radiative flux due to mainly the bound-free processes and using the model of the surfa
Externí odkaz:
http://arxiv.org/abs/astro-ph/0703396
We present a principle component analysis of multicolour light variations of the He-strong magnetic chemically peculiar star HD 37776 and its (O-C) diagram. The period increase rate found, (dP/dt) / P = 5.5 x 10^{-6}/year, is consistent with the conc
Externí odkaz:
http://arxiv.org/abs/astro-ph/0509751
We calculated spectral energy distribution of the helium strong chemically peculiar star HD 37776 using adequate model atmospheres. We show that the chemical peculiarity influences the stellar energy distribution. Consequently, spots of peculiar chem
Externí odkaz:
http://arxiv.org/abs/astro-ph/0509716