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Akademický článek

LITHIUM BLEND FITTING FOR roAp STAR HD101065 (PRZYBYLSKI'S STAR)

Autor: A. V. Shavrina, V. Khalack, N. S. Polosukhina, J. Zverko, J. Zhiznovsky, V. F. Gopka, P. North, V. V. Tsymbal, A. V. Yushchenko

Publikováno v: Odessa Astronomical Publications, Vol 14, Iss 0, Pp 249-252 (2017)

We have considered the possibility for modeling of remarkable spectral feature 6708 Å for HD101065 (Przybylski's star) in two ways - as a blend of Li and REE lines and as blend of REE lines only. We show by model calculations that Li lines absorb si

Externí odkaz: https://doaj.org/article/c2a38579b2f2492191ce04a00a4249e2

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Akademický článek

LI I 6708A BLEND IN THE SPECTRA OF STRONGLY MAGNETIC STAR HD166473

Autor: A. V. Shavrina, V. Khalack, Y. Glagolevskij, D. Lyashko, J. Landstreet, F. Leone, N. S. Polosukhina, M. Giarrusso

Publikováno v: Odessa Astronomical Publications, Vol 26, Iss 1, Pp 112-114 (2013)

The analysis of Li I 6708 Ǻ blend in the spectra of HD166473 was performed for 6 rotational phases distributed over the whole rotational period (P~9.5 years). The magnetic ﬁeld model has been constructed based on the polarimetric measurements from

Externí odkaz: https://doaj.org/article/c913e67f99c84ada9e81942c1a6560ba

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Analysis of eight magnetic chemically peculiar stars with rotational modulation

Autor: O Kobzar, V Khalack, D Bohlender, G Mathys, M E Shultz, D M Bowman, E Paunzen, C Lovekin, A David-Uraz, J Sikora, P Lampens, O Richard

Publikováno v: Monthly Notices of the Royal Astronomical Society. 517:5340-5357

Since the end of 2018, the Transiting Exoplanet Survey Satellite (TESS) has provided stellar photometry to the astronomical community. We have used TESS data to study rotational modulation in the light curves of a sample of chemically peculiar stars

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1861da79f77592a03c9f2ad192959e33
https://doi.org/10.1093/mnras/stac2799

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MOBSTER-VI. The crucial influence of rotation on the radio magnetospheres of hot stars

Autor: M E Shultz, S P Owocki, A ud-Doula, A Biswas, D Bohlender, P Chandra, B Das, A David-Uraz, V Khalack, O Kochukhov, J D Landstreet, P Leto, D Monin, C Neiner, Th Rivinius, G A Wade

Numerous magnetic hot stars exhibit gyrosynchrotron radio emission. The source electrons were previously thought to be accelerated to relativistic velocities in the current sheet formed in the middle magnetosphere by the wind opening magnetic field l

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c908b8827d5308ded914924e2d0a3764
http://hdl.handle.net/20.500.12386/32894

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Akademický článek

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Hot horizontal branch stars in NGC288-effects of diffusion and stratification on their atmospheric parameters (Corrigendum)

Autor: S. Moehler, S. Dreizler, F. LeBlanc, V. Khalack, G. Michaud, J. Richer, A. V. Sweigart, F. Grundahl

Publikováno v: Moehler, S, Dreizler, S, LeBlanc, F, Khalack, V, Michaud, G, Richer, J, Sweigart, A V & Grundahl, F 2017, ' Hot horizontal branch stars in NGC288-effects of diffusion and stratification on their atmospheric parameters (Corrigendum) ', Astronomy & Astrophysics, vol. 605, 4 . https://doi.org/10.1051/0004-6361/201322953e

We found that the script to determine the masses of the stars contains two errors. This script and a related one have been used to determine masses of globular cluster stars and distances to field stars in 12 papers published between 1990 and 2014. W

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ed741c1534e18d36ec0558a7bc4d6b49
https://pure.au.dk/ws/files/133930144/Hot_horizontal_branch_stars_in_NGC_288_effects_of_diffusion.pdf

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