First apsidal motion and light curve analysis of 162 eccentric
eclipsing binaries from LMC

J 2020

First apsidal motion and light curve analysis of 162 eccentric eclipsing binaries from LMC

ZASCHE, Petr, Marek WOLF, Hana KUČÁKOVÁ, Jan KÁRA, Jaroslav MERC et. al.

Základní údaje

Originální název

First apsidal motion and light curve analysis of 162 eccentric eclipsing binaries from LMC

Autoři

ZASCHE, Petr (203 Česká republika, garant), Marek WOLF (203 Česká republika), Hana KUČÁKOVÁ (203 Česká republika), Jan KÁRA (203 Česká republika), Jaroslav MERC (203 Česká republika), Miloslav ZEJDA (203 Česká republika, domácí), Marek SKARKA (203 Česká republika, domácí), Jan JANÍK (203 Česká republika, domácí) a Petr KURFÜRST (203 Česká republika, domácí)

Vydání

Astronomy and Astrophysics, Les Ulis, EDP SCIENCES S A, 2020, 0004-6361

Další údaje

Jazyk

angličtina

Typ výsledku

Článek v odborném periodiku

Obor

10308 Astronomy

Stát vydavatele

Francie

Utajení

není předmětem státního či obchodního tajemství

Odkazy

URL

Impakt faktor

Impact factor: 5.802

Kód RIV

RIV/00216224:14310/20:00114273

Organizační jednotka

Přírodovědecká fakulta

DOI

http://dx.doi.org/10.1051/0004-6361/202037822

UT WoS

000560436900001

Klíčová slova anglicky

binaries: eclipsing; stars: fundamental parameters; stars: early-type; Magellanic Clouds

Štítky

rivok

Příznaky

Mezinárodní význam, Recenzováno

Změněno: 29. 4. 2021 12:08, Mgr. Marie Šípková, DiS.

Anotace

V originále

We present an extensive study of 162 early-type binary systems located in the LMC galaxy that show apsidal motion and have never been studied before. For the ample systems, we performed light curve and apsidal motion modelling for the first time. These systems have a median orbital period of 2.2 days and typical periods of the apsidal motion were derived to be of the order of decades. We identified two record-breaking systems. The first, OGLE LMC-ECL-22613, shows the shortest known apsidal motion period among systems with main sequence components (6.6 years); it contains a third component with an orbital period of 23 years. The second, OGLE LMC-ECL-17226, is an eccentric system with the shortest known orbital period (0.9879 days) and with quite fast apsidal motion period (11 years). Among the studied systems, 36 new triple-star candidates were identified based on the additional period variations. This represents more than 20% of all studied systems, which is in agreement with the statistics of multiples in our Galaxy. However, the fraction should only be considered as a lower limit of these early-type stars in the LMC because of our method of detection, data coverage, and limited precision of individual times of eclipses.

Návaznosti

GA18-05665S, projekt VaV

Název: Ztráta hmoty v pozdních fázích vývoje hmotných hvězd

Investor: Grantová agentura ČR, Ztráta hmoty v pozdních fázích vývoje hmotných hvězd

Citovat

ZASCHE, Petr, Marek WOLF, Hana KUČÁKOVÁ, Jan KÁRA, Jaroslav MERC, Miloslav ZEJDA, Marek SKARKA, Jan JANÍK a Petr KURFÜRST. First apsidal motion and light curve analysis of 162 eccentric eclipsing binaries from LMC. Astronomy and Astrophysics. Les Ulis: EDP SCIENCES S A, 2020, roč. 640, August, s. 1-25. ISSN 0004-6361. Dostupné z: https://dx.doi.org/10.1051/0004-6361/202037822.

@article{1674661,
   author = {Zasche, Petr and Wolf, Marek and Kučáková, Hana and Kára, Jan and Merc, Jaroslav and Zejda, Miloslav and Skarka, Marek and Janík, Jan and Kurfürst, Petr},
   article_location = {Les Ulis},
   article_number = {August},
   doi = {http://dx.doi.org/10.1051/0004-6361/202037822},
   keywords = {binaries: eclipsing; stars: fundamental parameters; stars: early-type; Magellanic Clouds},
   language = {eng},
   issn = {0004-6361},
   journal = {Astronomy and Astrophysics},
   title = {First apsidal motion and light curve analysis of 162 eccentric eclipsing binaries from LMC},
   url = {https://ui.adsabs.harvard.edu/abs/2020A&A...640A..33Z},
   volume = {640},
   year = {2020}
}

TY  - JOUR
ID  - 1674661
AU  - Zasche, Petr - Wolf, Marek - Kučáková, Hana - Kára, Jan - Merc, Jaroslav - Zejda, Miloslav - Skarka, Marek - Janík, Jan - Kurfürst, Petr
PY  - 2020
TI  - First apsidal motion and light curve analysis of 162 eccentric eclipsing binaries from LMC
JF  - Astronomy and Astrophysics
VL  - 640
IS  - August
SP  - 1-25
EP  - 1-25
PB  - EDP SCIENCES S A
SN  - 00046361
KW  - binaries: eclipsing
KW  - stars: fundamental parameters
KW  - stars: early-type
KW  - Magellanic Clouds
UR  - https://ui.adsabs.harvard.edu/abs/2020A&A...640A..33Z
L2  - https://ui.adsabs.harvard.edu/abs/2020A&A...640A..33Z
N2  - We present an extensive study of 162 early-type binary systems located in the LMC galaxy that show apsidal motion and have never been studied before. For the ample systems, we performed light curve and apsidal motion modelling for the first time. These systems have a median orbital period of 2.2 days and typical periods of the apsidal motion were derived to be of the order of decades. We identified two record-breaking systems. The first, OGLE LMC-ECL-22613, shows the shortest known apsidal motion period among systems with main sequence components (6.6 years); it contains a third component with an orbital period of 23 years. The second, OGLE LMC-ECL-17226, is an eccentric system with the shortest known orbital period (0.9879 days) and with quite fast apsidal motion period (11 years). Among the studied systems, 36 new triple-star candidates were identified based on the additional period variations. This represents more than 20% of all studied systems, which is in agreement with the statistics of multiples in our Galaxy. However, the fraction should only be considered as a lower limit of these early-type stars in the LMC because of our method of detection, data coverage, and limited precision of individual times of eclipses.
ER  -

ZASCHE, Petr, Marek WOLF, Hana KUČÁKOVÁ, Jan KÁRA, Jaroslav MERC, Miloslav ZEJDA, Marek SKARKA, Jan JANÍK a Petr KURFÜRST. First apsidal motion and light curve analysis of 162 eccentric eclipsing binaries from LMC. \textit{Astronomy and Astrophysics}. Les Ulis: EDP SCIENCES S A, 2020, roč.~640, August, s.~1-25. ISSN~0004-6361. Dostupné z: https://dx.doi.org/10.1051/0004-6361/202037822.

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