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Photometrically simply behaving mCP stars
Z. Mikulasek, T. Graf, J. Krticka +2
We analyzed uvby and Hp light curves of 19 well observed magnetic CP stars selected from the "On-line database of photometric observations of mCP stars" of which light curves in al…
The record-breaking rotational braking of the He strong CP star HD 37776
Z. Mikulasek, J. Krticka, J. Zverko +8
We study the long-term light and spectral variations in the He-strong magnetic chemically peculiar star HD 37776 (V901 Ori) to search for changes of its 1.5387 d period in 1976-200…
Wind emission of OB supergiants and the influence of clumping
Michaela Kraus, Jiri Kubat, Jiri Krticka
The influence of the wind to the total continuum of OB supergiants is discussed. For wind velocity distributions with β> 1.0, the wind can have strong influence to the total contin…
The light variability of the helium strong star HD 37776 as a result of its inhomogeneous elemental surface distribution
J. Krticka, Z. Mikulasek, J. Zverko +1
We simulate light curves of the helium strong chemically peculiar star HD 37776 assuming that the observed periodic light variations originate as a result of inhomogeneous horizont…
The ZOO of uvby and Hp light curves of magnetic chemically peculiar stars
Z. Mikulasek, J. Zverko, J. Krticka +3
We present preliminary results of the generalized Principal Component Analysis (PCA) of light curves of 82 magnetic chemically peculiar (further mCP) stars applied to 54 thousand i…
The light variations of HD 37776 as a result of the uneven surface distribution of helium and silicon
Jiri Krticka, Zdenek Mikulasek, Juraj Zverko +1
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 d…