Updated study of the quintuple system V994 Herculis

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F16%3A10332009" target="_blank" >RIV/00216208:11320/16:10332009 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1051/0004-6361/201628153" target="_blank" >http://dx.doi.org/10.1051/0004-6361/201628153</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1051/0004-6361/201628153" target="_blank" >10.1051/0004-6361/201628153</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Updated study of the quintuple system V994 Herculis

Popis výsledku v původním jazyce

Aims. We present a new updated study of the unique quintuple system of two eclipsing binaries, V994 Her. Methods. Based on new obtained photometric observations, we analysed the period variations of the two eclipsing pairs of V994 Her. Results. We found that the orbital period of the two eclipsing binaries around a common barycenter is about 2.9 yrs instead of the original period, which was reported as 6.3 yrs. Moreover, the system now seems to be close to coplanar (i approximate to 84 degrees), and we also revised the individual masses of all four eclipsing components. The two eclipsing pairs show slow apsidal motion with periods of about 116 and 111 yrs, respectively. Pairs A and B are distant by about 17 mas on the sky, which is encouraging for observers because an interferometric detection may be possible in the next years. Conclusions. All of these results are based on the photometric observations of V994 Her and its detailed analysis of the period changes of the two eclipsing binaries.

Název v anglickém jazyce

Updated study of the quintuple system V994 Herculis

Popis výsledku anglicky

Aims. We present a new updated study of the unique quintuple system of two eclipsing binaries, V994 Her. Methods. Based on new obtained photometric observations, we analysed the period variations of the two eclipsing pairs of V994 Her. Results. We found that the orbital period of the two eclipsing binaries around a common barycenter is about 2.9 yrs instead of the original period, which was reported as 6.3 yrs. Moreover, the system now seems to be close to coplanar (i approximate to 84 degrees), and we also revised the individual masses of all four eclipsing components. The two eclipsing pairs show slow apsidal motion with periods of about 116 and 111 yrs, respectively. Pairs A and B are distant by about 17 mas on the sky, which is encouraging for observers because an interferometric detection may be possible in the next years. Conclusions. All of these results are based on the photometric observations of V994 Her and its detailed analysis of the period changes of the two eclipsing binaries.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

BN - Astronomie a nebeská mechanika, astrofyzika

OECD FORD obor

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Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2016

Kód důvěrnosti údajů

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

Název periodika

Astronomy and Astrophysics [online]

ISSN

1432-0746

e-ISSN

—

Svazek periodika

588

Číslo periodika v rámci svazku

duben

Stát vydavatele periodika

PL - Polská republika

Počet stran výsledku

4

Strana od-do

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Kód UT WoS článku

000373207800133

EID výsledku v databázi Scopus

2-s2.0-84964316539