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

J 2019

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

WOLF, Marek, Petr ZASCHE, Hana KUČÁKOVÁ, Martin MAŠEK, Kateřina HOŇKOVÁ et. al.

Basic information

Original name

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

Authors

WOLF, Marek (203 Czech Republic), Petr ZASCHE (203 Czech Republic), Hana KUČÁKOVÁ (203 Czech Republic, guarantor, belonging to the institution), Martin MAŠEK (203 Czech Republic), Kateřina HOŇKOVÁ (203 Czech Republic), Jakub JURYŠEK (203 Czech Republic), Anton PASCHKE, Ladislav ŠMELCER (203 Czech Republic) and Miloslav ZEJDA

Edition

Acta Astronomica, 2019, 0001-5237

Other information

Language

English

Type of outcome

Článek v odborném periodiku

Field of Study

10308 Astronomy

Country of publisher

Poland

Confidentiality degree

není předmětem státního či obchodního tajemství

References:

URL

RIV identification code

RIV/47813059:19240/19:A0000534

Organization unit

Faculty of Philosophy and Science in Opava

DOI

http://dx.doi.org/10.32023/0001-5237/69.1.5

UT WoS

000464124900005

Keywords in English

binaries: eclipsing; Stars: fundamental parameters; Stars: individual: V0345 Lac - YY Sgr - and DR Vul

Abstract

V originále

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_Sun, 0.8 M_Sun, and 7.2 M_Sun, respectively.

Citovat

WOLF, Marek, Petr ZASCHE, Hana KUČÁKOVÁ, Martin MAŠEK, Kateřina HOŇKOVÁ, Jakub JURYŠEK, Anton PASCHKE, Ladislav ŠMELCER and Miloslav ZEJDA. Triple Eccentric Systems V0345 Lac, YY Sgr, and DR Vul. Acta Astronomica. 2019, vol. 69, No 1, p. 63-78. ISSN 0001-5237. Available from: https://dx.doi.org/10.32023/0001-5237/69.1.5.

@article{37372,
   author = {Wolf, Marek and Zasche, Petr and Kučáková, Hana and Mašek, Martin and Hoňková, Kateřina and Juryšek, Jakub and Paschke, Anton and Šmelcer, Ladislav and Zejda, Miloslav},
   article_number = {1},
   doi = {http://dx.doi.org/10.32023/0001-5237/69.1.5},
   keywords = {binaries: eclipsing; Stars: fundamental parameters; Stars: individual: V0345 Lac - YY Sgr - and DR Vul},
   language = {eng},
   issn = {0001-5237},
   journal = {Acta Astronomica},
   title = {Triple Eccentric Systems V0345 Lac, YY Sgr, and DR Vul},
   url = {http://acta.astrouw.edu.pl/Vol69/n1/a_69_1_5.html},
   volume = {69},
   year = {2019}
}

TY  - JOUR
ID  - 37372
AU  - Wolf, Marek - Zasche, Petr - Kučáková, Hana - Mašek, Martin - Hoňková, Kateřina - Juryšek, Jakub - Paschke, Anton - Šmelcer, Ladislav - Zejda, Miloslav
PY  - 2019
TI  - Triple Eccentric Systems V0345 Lac, YY Sgr, and DR Vul
JF  - Acta Astronomica
VL  - 69
IS  - 1
SP  - 63-78
EP  - 63-78
SN  - 00015237
KW  - binaries: eclipsing
KW  - Stars: fundamental parameters
KW  - Stars: individual: V0345 Lac - YY Sgr - and DR Vul
UR  - http://acta.astrouw.edu.pl/Vol69/n1/a_69_1_5.html
L2  - http://acta.astrouw.edu.pl/Vol69/n1/a_69_1_5.html
N2  - 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_Sun, 0.8 M_Sun, and 7.2 M_Sun, respectively.
ER  -

WOLF, Marek, Petr ZASCHE, Hana KUČÁKOVÁ, Martin MAŠEK, Kateřina HOŇKOVÁ, Jakub JURYŠEK, Anton PASCHKE, Ladislav ŠMELCER and Miloslav ZEJDA. Triple Eccentric Systems V0345 Lac, YY Sgr, and DR Vul. \textit{Acta Astronomica}. 2019, vol.~69, No~1, p.~63-78. ISSN~0001-5237. Available from: https://dx.doi.org/10.32023/0001-5237/69.1.5.

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