Triple Eccentric Systems V0345 Lac, YY Sgr, and DR Vul

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F19%3A00517241" target="_blank" >RIV/68378271:_____/19:00517241 - isvavai.cz</a>

Alternative codes found

RIV/67985815:_____/19:00517241 RIV/00216224:14310/19:00108231 RIV/00216208:11320/19:10405869 RIV/00098639:_____/19:N0000002 RIV/47813059:19240/19:A0000534

Result on the web

<a href="https://doi.org/10.32023/0001-5237/69.1.5" target="_blank" >https://doi.org/10.32023/0001-5237/69.1.5</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.32023/0001-5237/69.1.5" target="_blank" >10.32023/0001-5237/69.1.5</a>

Result language

angličtina

Original language name

Triple Eccentric Systems V0345 Lac, YY Sgr, and DR Vul

Original language description

We present more results of our long-term observational project to analyze the variations of the orbital period for early-type eccentric eclipsing binaries. About sixty new precise mid-eclipse times were measured or derived for three eclipsing binaries, namely V0345 Lac, YY Sgr, and DR Vul. Based on current O - C diagrams, we found in all cases that beside the typical apsidal motion the times of minima show additional cyclical changes likely caused by a third body orbiting the eclipsing pair. The new light curve solution of V0345 Lac results in a moderate orbital eccentricity (e = 0.26) of this binary. The periods of apsidal motion are 1580 yr, 295 yr, and 36 yr, respectively. The relativistic contributions to the total apsidal-motion rate are small for all three eccentric binaries - about 5-14%. The third-body orbital periods are relatively short: 24 yr, 19 yr and 66 yr, and the minimal masses of third bodies are: 2.0 M-circle dot, 0.8 M-circle dot, and 7.2 M-circle dot, respectively.

Czech name

—

Czech description

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Type

J_imp - 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)

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)

Publication year

2019

Confidentiality

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

Name of the periodical

Acta Astronomica

ISSN

0001-5237

e-ISSN

—

Volume of the periodical

69

Issue of the periodical within the volume

1

Country of publishing house

PL - POLAND

Number of pages

16

Pages from-to

63-78

UT code for WoS article

000464124900005

EID of the result in the Scopus database

2-s2.0-85066407850