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4 papers
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…
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…
Light variations and angular momentum loss from the He-strong magnetic chemically peculiar star HD 37776
Zdenek Mikulasek, Jiri Krticka, Juraj Zverko +2
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 rat…