The first analysis of extragalactic binary-orbit precession

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F13%3A10193071" target="_blank" >RIV/00216208:11320/13:10193071 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.1051/0004-6361/201322353" target="_blank" >http://dx.doi.org/10.1051/0004-6361/201322353</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1051/0004-6361/201322353" target="_blank" >10.1051/0004-6361/201322353</a>

Result language

angličtina

Original language name

The first analysis of extragalactic binary-orbit precession

Original language description

Aims. The main aim of the present paper is the very first analysis of the binary-orbit precession out of our Galaxy. Methods. The light curves of an eclipsing binary MACHO 82.8043.171 in the Large Magellanic cloud (LMC) were studied in order to analyse the long-term evolution of its orbit. Results. It is a detached system that is undergoing rapid orbit precession. The inclination of the orbit towards the observer has been changing, which has caused the eclipse depth to become lower over the past decade,and this is ongoing. The period of this effect was derived as only about 77 years, so it is the second fastest nodal motion known amongst such systems nowadays. This is the first analysis of an extragalactic binary with nodal precession. This effect isprobably caused by a distant third body orbiting the pair, which could potentially be detected via spectroscopy. Conclusions. Some preliminary estimates of this body are presented. However, even such a result can tell us something about t

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

BN - Astronomy and celestial mechanics, astrophysics

OECD FORD branch

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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)<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2013

Confidentiality

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

Name of the periodical

Astronomy and Astrophysics

ISSN

0004-6361

e-ISSN

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Volume of the periodical

559

Issue of the periodical within the volume

listopad

Country of publishing house

FR - FRANCE

Number of pages

5

Pages from-to

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UT code for WoS article

000327847200041

EID of the result in the Scopus database

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