Monitoring Period Variations of Variable Stars using Precise Photometric Surveys
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14310%2F19%3A00108284" target="_blank" >RIV/00216224:14310/19:00108284 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.1017/S174392131800234X" target="_blank" >https://doi.org/10.1017/S174392131800234X</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1017/S174392131800234X" target="_blank" >10.1017/S174392131800234X</a>
Alternative languages
Result language
angličtina
Original language name
Monitoring Period Variations of Variable Stars using Precise Photometric Surveys
Original language description
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.
Czech name
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Czech description
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Classification
Type
D - Article in proceedings
CEP classification
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OECD FORD branch
10308 - Astronomy (including astrophysics,space science)
Result continuities
Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2019
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Article name in the collection
Symposium S339 (Southern Horizons in Time-Domain Astronomy)
ISBN
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ISSN
1743-1913
e-ISSN
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Number of pages
4
Pages from-to
110-113
Publisher name
Cambridge University Press
Place of publication
Neuveden
Event location
Cape Town, South Africa
Event date
Nov 13, 2017
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
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