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@inproceedings{1648116,
author = {Mikulášek, Zdeněk and Zejda, Miloslav and Hümmerich, S. and Krtička, Jiří and Bernhard, K. and Paunzen, Ernst and Skarka, Marek and De Villiers, S. and Jagelka, Miroslav and Bakis, Volkan},
address = {Neuveden},
booktitle = {Symposium S339 (Southern Horizons in Time-Domain Astronomy)},
doi = {http://dx.doi.org/10.1017/S174392131800234X},
editor = {Elizabeth R. Griffin},
keywords = {methods: statistical; surveys; stars: chemically peculiar; stars: rotation; stars: spots; binaries: general; stars: low mass},
howpublished = {tištěná verze "print"},
language = {eng},
location = {Neuveden},
pages = {110-113},
publisher = {Cambridge University Press},
title = {Monitoring Period Variations of Variable Stars using Precise Photometric Surveys},
url = {https://doi.org/10.1017/S174392131800234X},
year = {2019}
}
TY - JOUR
ID - 1648116
AU - Mikulášek, Zdeněk - Zejda, Miloslav - Hümmerich, S. - Krtička, Jiří - Bernhard, K. - Paunzen, Ernst - Skarka, Marek - De Villiers, S. - Jagelka, Miroslav - Bakis, Volkan
PY - 2019
TI - Monitoring Period Variations of Variable Stars using Precise Photometric Surveys
PB - Cambridge University Press
CY - Neuveden
KW - methods: statistical
KW - surveys
KW - stars: chemically peculiar
KW - stars: rotation
KW - stars: spots
KW - binaries: general
KW - stars: low mass
UR - https://doi.org/10.1017/S174392131800234X
L2 - https://doi.org/10.1017/S174392131800234X
N2 - The period variations of rotating, pulsating and eclipsing variable stars bear valuable astrophysical information about the presence of companions, evolutionary effects, and the inner structure of the stars. This talk described a universal method for de-trending and re-scaling precise photometric data (Kepler, MOST, CoRoT, OGLE, …) appropriate for period-change diagnostics of periodic variables. We demonstrated the potential of the method by analysing the period variability of one of the newly-identified Kepler magnetic chemically-peculiar (mCP) stars. We showed that, surprisingly, our target star displays near-sinusoidal changes in its observed light-variations, with a period of 2.85(6) years, which is apparently the result of the presence of a nearby stellar companion. The expected long-term changes of the rotational period, as have been observed in several mCP stars, have not been identified among the sample of Kepler mCP stars.
ER -
MIKULÁŠEK, Zdeněk, Miloslav ZEJDA, S. HÜMMERICH, Jiří KRTIČKA, K. BERNHARD, Ernst PAUNZEN, Marek SKARKA, S. DE VILLIERS, Miroslav JAGELKA and Volkan BAKIS. Monitoring Period Variations of Variable Stars using Precise Photometric Surveys. In Elizabeth R. Griffin. \textit{Symposium S339 (Southern Horizons in Time-Domain Astronomy)}. Neuveden: Cambridge University Press, 2019, p.~110-113. ISSN~1743-1913. Available from: https://dx.doi.org/10.1017/S174392131800234X.
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