About: The first analysis of extragalactic binary-orbit precession

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About: The first analysis of extragalactic binary-orbit precession Goto Sponge NotDistinct Permalink

An Entity of Type : http://linked.opendata.cz/ontology/domain/vavai/Vysledek, within Data Space : linked.opendata.cz associated with source document(s)

Attributes	Values
rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
rdfs:seeAlso	http://dx.doi.org/10.1051/0004-6361/201322353
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 is probably 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 the multiplicity fraction in other galaxies. 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 is probably 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 the multiplicity fraction in other galaxies. (en)
Title	The first analysis of extragalactic binary-orbit precession The first analysis of extragalactic binary-orbit precession (en)
skos:prefLabel	The first analysis of extragalactic binary-orbit precession The first analysis of extragalactic binary-orbit precession (en)
skos:notation	RIV/00216208:11320/13:10193071!RIV14-GA0-11320___
http://linked.open...avai/riv/aktivita	I P
http://linked.open...avai/riv/aktivity	I, P(GAP209/10/0715), P(LG12001)
http://linked.open...iv/cisloPeriodika	listopad
http://linked.open...vai/riv/dodaniDat	2014
http://linked.open...aciTvurceVysledku	Zasche, Petr Wolf, Marek
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Univerzita Karlova v Praze / Matematicko-fyzikální fakulta
http://linked.open...dnocenehoVysledku	75163
http://linked.open...ai/riv/idVysledku	RIV/00216208:11320/13:10193071
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	stars: individual: MACHO 82.8043.171; stars: fundamental parameters; binaries: eclipsing (en)
http://linked.open.../riv/klicoveSlovo	binaries: eclipsing stars: individual: MACHO 82.8043.171 stars: fundamental parameters
http://linked.open...odStatuVydavatele	FR - Francouzská republika
http://linked.open...ontrolniKodProRIV	[5F0E088F8427]
http://linked.open...i/riv/nazevZdroje	Astronomy and Astrophysics
http://linked.open...in/vavai/riv/obor	BN
http://linked.open...ichTvurcuVysledku	2 (xsd:int)
http://linked.open...cetTvurcuVysledku	2 (xsd:int)
http://linked.open...vavai/riv/projekt	Accurate physical properties of hot stars based on binary and multiple star studies Study of properties of asteroids and stellar systems with photometric observations with the Danish 1.54-m telescope at the European Southern Observatory
http://linked.open...UplatneniVysledku	2013
http://linked.open...v/svazekPeriodika	559
http://linked.open...iv/tvurceVysledku	Zasche, Petr Wolf, Marek
http://linked.open...ain/vavai/riv/wos	000327847200041
issn	0004-6361
number of pages	5 (xsd:int)
http://bibframe.org/vocab/doi	10.1051/0004-6361/201322353
http://localhost/t...ganizacniJednotka	11320

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