The first analysis of extragalactic binary-orbit precession

Kód výsledku v 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>

Výsledek na webu

<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>

Jazyk výsledku

angličtina

Název v původním jazyce

The first analysis of extragalactic binary-orbit precession

Popis výsledku v původním jazyce

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

Název v anglickém jazyce

The first analysis of extragalactic binary-orbit precession

Popis výsledku anglicky

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

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

BN - Astronomie a nebeská mechanika, astrofyzika

OECD FORD obor

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

Rok uplatnění

2013

Kód důvěrnosti údajů

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

Název periodika

Astronomy and Astrophysics

ISSN

0004-6361

e-ISSN

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Svazek periodika

559

Číslo periodika v rámci svazku

listopad

Stát vydavatele periodika

FR - Francouzská republika

Počet stran výsledku

5

Strana od-do

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Kód UT WoS článku

000327847200041

EID výsledku v databázi Scopus

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