Activity of ET Dra—a star of FK Com type

Kód výsledku v 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>

Výsledek na webu

<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>

Jazyk výsledku

angličtina

Název v původním jazyce

Activity of ET Dra—a star of FK Com type

Popis výsledku v původním jazyce

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).

Název v anglickém jazyce

Activity of ET Dra—a star of FK Com type

Popis výsledku anglicky

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).

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10308 - Astronomy (including astrophysics,space science)

Projekt

<a href="/cs/project/EF15_003%2F0000437" target="_blank" >EF15_003/0000437: Kosmologie, gravitace a temný sektor vesmíru</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2022

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Astrophysical Bulletin

ISSN

1990-3413

e-ISSN

1990-3421

Svazek periodika

77

Číslo periodika v rámci svazku

4

Stát vydavatele periodika

RU - Ruská federace

Počet stran výsledku

14

Strana od-do

422-430

Kód UT WoS článku

000934991900008

EID výsledku v databázi Scopus

2-s2.0-85148634486