About: Ole Romer's method still on the stage: the study of two bound eclipsing binaries in quintuple system V994 Her

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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/10.1093/mnras/sts616
Description	More than three hundred years ago, Ole Romer measured the speed of light purely by observing the periodic shift of the observed eclipse arrival times of Jupiter's moons arising from the varying Earth-Jupiter distance. The same method of measuring the periodic modulation of delays is still used in astrophysics. The ideal laboratories for this effect are eclipsing binaries. The unique system V994 Her consists of two eclipsing binaries orbiting each other. However, until now it was not certain whether these were gravitationally bound and what their orbital period was. We show that the system is in fact quintuple and the two eclipsing binaries are orbiting each other with a period of about 6.3 yr. This analysis was performed only through studying the periodic modulation of the two periods: during the periastron passage one binary has an apparently shorter period, while the other one is longer, exactly as required by theory. Additionally, it was found that both inner eclipsing pairs orbit with slightly eccentric orbits, undergoing slow apsidal motion with a period of the order of centuries. More than three hundred years ago, Ole Romer measured the speed of light purely by observing the periodic shift of the observed eclipse arrival times of Jupiter's moons arising from the varying Earth-Jupiter distance. The same method of measuring the periodic modulation of delays is still used in astrophysics. The ideal laboratories for this effect are eclipsing binaries. The unique system V994 Her consists of two eclipsing binaries orbiting each other. However, until now it was not certain whether these were gravitationally bound and what their orbital period was. We show that the system is in fact quintuple and the two eclipsing binaries are orbiting each other with a period of about 6.3 yr. This analysis was performed only through studying the periodic modulation of the two periods: during the periastron passage one binary has an apparently shorter period, while the other one is longer, exactly as required by theory. Additionally, it was found that both inner eclipsing pairs orbit with slightly eccentric orbits, undergoing slow apsidal motion with a period of the order of centuries. (en)
Title	Ole Romer's method still on the stage: the study of two bound eclipsing binaries in quintuple system V994 Her Ole Romer's method still on the stage: the study of two bound eclipsing binaries in quintuple system V994 Her (en)
skos:prefLabel	Ole Romer's method still on the stage: the study of two bound eclipsing binaries in quintuple system V994 Her Ole Romer's method still on the stage: the study of two bound eclipsing binaries in quintuple system V994 Her (en)
skos:notation	RIV/00216208:11320/13:10174140!RIV14-GA0-11320___
http://linked.open...avai/riv/aktivita	I P Z
http://linked.open...avai/riv/aktivity	I, P(GAP209/10/0715), Z(MSM0021620860)
http://linked.open...iv/cisloPeriodika	4
http://linked.open...vai/riv/dodaniDat	2014
http://linked.open...aciTvurceVysledku	Zasche, Petr
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	93590
http://linked.open...ai/riv/idVysledku	RIV/00216208:11320/13:10174140
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	stars: individual: V994 Her; stars: fundamental parameters; binaries: visual; binaries: eclipsing (en)
http://linked.open.../riv/klicoveSlovo	binaries: eclipsing stars: fundamental parameters binaries: visual stars: individual: V994 Her
http://linked.open...odStatuVydavatele	GB - Spojené království Velké Británie a Severního Irska
http://linked.open...ontrolniKodProRIV	[55EF780A1918]
http://linked.open...i/riv/nazevZdroje	Monthly Notices of the Royal Astronomical Society
http://linked.open...in/vavai/riv/obor	BN
http://linked.open...ichTvurcuVysledku	1 (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
http://linked.open...UplatneniVysledku	2013
http://linked.open...v/svazekPeriodika	429
http://linked.open...iv/tvurceVysledku	Zasche, Petr Uhlar, R.
http://linked.open...ain/vavai/riv/wos	000318272600057
http://linked.open...n/vavai/riv/zamer	Fyzikální studium objektů a procesů ve sluneční soustavě a v astrofyzikálních systémech
issn	0035-8711
number of pages	5 (xsd:int)
http://bibframe.org/vocab/doi	10.1093/mnras/sts616
http://localhost/t...ganizacniJednotka	11320

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