The two eccentric eclipsing binaries in multiple systems: V539 Arae and V335 Serpentis

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985815%3A_____%2F22%3A00555881" target="_blank" >RIV/67985815:_____/22:00555881 - isvavai.cz</a>
Alternative codes found
RIV/68378271:_____/22:00555881 RIV/00216208:11320/22:10455230 RIV/00216224:14310/22:00125358 RIV/47813059:19630/22:A0000224
Result on the web
<a href="https://doi.org/10.1016/j.newast.2021.101708" target="_blank" >https://doi.org/10.1016/j.newast.2021.101708</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.newast.2021.101708" target="_blank" >10.1016/j.newast.2021.101708</a>

Result language
angličtina
Original language name
The two eccentric eclipsing binaries in multiple systems: V539 Arae and V335 Serpentis
Original language description
We present new results of our long-term observational project to analyze the variations of the orbital period for early-type eccentric eclipsing binaries. Altogether 77 new mid-eclipse times were measured or derived for two eclipsing binaries, namely V539 Ara and V335 Ser. Based on current O - C diagrams, we found in both systems that times of minima besides the typical apsidal motion show additional cyclical changes likely caused by the third or fourth bodies orbiting the eclipsing pair. The improved periods of apsidal motion are 155 and 1080 years, respectively. For the first time we propose a third and fourth body orbiting V539 Ara, stellar companions in a hierarchical system with a minimal mass of 0.41 and 1.74 Ms. In V355 Ser we found a possible third body with a mass of 0.18 Ms orbiting this eclipsing pair. The third- and fourth-body orbital periods are relatively short: 29 and 57 yr in case of V539 Ara, and 25 yr for V335 Ser.
Czech name
—
Czech description
—

Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
—
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
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2022
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Similar results(10)