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

Kód výsledku v IS VaVaI

RIV/68378271:_____/19:00517241 - isvavai.cz

Nalezeny alternativní kódy

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

Výsledek na webu

https://doi.org/10.32023/0001-5237/69.1.5

DOI - Digital Object Identifier

10.32023/0001-5237/69.1.5

Jazyk výsledku

angličtina

Název v původním jazyce

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

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

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

Popis výsledku anglicky

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.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10308 - Astronomy (including astrophysics,space science)

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

2019

Kód důvěrnosti údajů

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

Název periodika

Acta Astronomica

ISSN

0001-5237

e-ISSN

—

Svazek periodika

69

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

PL - Polská republika

Počet stran výsledku

16

Strana od-do

63-78

Kód UT WoS článku

000464124900005

EID výsledku v databázi Scopus

2-s2.0-85066407850