Activity of ET Dra—a star of FK Com type
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F22%3A00571468" target="_blank" >RIV/68378271:_____/22:00571468 - isvavai.cz</a>
Result on the web
<a href="http://doi.org/10.1134/S1990341322040101" target="_blank" >http://doi.org/10.1134/S1990341322040101</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1134/S1990341322040101" target="_blank" >10.1134/S1990341322040101</a>
Alternative languages
Result language
angličtina
Original language name
Activity of ET Dra—a star of FK Com type
Original language description
We present new results of the study of ET Dra - a star of the FK Com type - based on observations carried out at the Zvenigorod Observatory of the Institute of Astronomy of RAS with the help of the FRAM-ORM telescope of the La Palma observatory (Spain) and the broadband optical monitoring system Mini-MegaTORTORA, located on the territory of the SAO RAS. We have studied changes in the shape of the light curve caused by the rotational modulation of a star with spots on its surface and the long-term variability of the stars brightness. An independent determination of the rotation period was carried out using all sets of observations available to us. The increase in the brightness of the star near HJD 2459044 during observations with the FRAM-ORM telescope in all three filters was interpreted by us as a stellar flare. Evidence was found for the existence of cycles lasting 580 days and 810 days (1.55 and 2.23 years, respectively).
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10308 - Astronomy (including astrophysics,space science)
Result continuities
Project
<a href="/en/project/EF15_003%2F0000437" target="_blank" >EF15_003/0000437: Cosmology, Gravity and the Dark Sector of the Universe</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2022
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Astrophysical Bulletin
ISSN
1990-3413
e-ISSN
1990-3421
Volume of the periodical
77
Issue of the periodical within the volume
4
Country of publishing house
RU - RUSSIAN FEDERATION
Number of pages
14
Pages from-to
422-430
UT code for WoS article
000934991900008
EID of the result in the Scopus database
2-s2.0-85148634486