About: HS Hydrae about to turn off its eclipses

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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/10.1051/0004-6361/201219392
Description	Aims. We aim to perform the first long-term analysis of the system HS Hya. Methods. We performed an analysis of the long-term evolution of the light curves of the detached eclipsing system HS Hya. Collecting all available photometric data since its discovery, the light curves were analyzed with a special focus on the evolution of system's inclination. Results. We find that the system undergoes a rapid change of inclination. Since its discovery until today the system's inclination changed by more than 15 degrees The shape of the light curve changes, and now the eclipses are almost undetectable. The third distant component of the system is causing the precession of the close orbit, and the nodal period is about 631 yr. Conclusions. New precise observations are desperately needed, preferably this year, because the amplitude of variations is decreasing rapidly every year. We know only 10 such systems on the whole sky at present. Aims. We aim to perform the first long-term analysis of the system HS Hya. Methods. We performed an analysis of the long-term evolution of the light curves of the detached eclipsing system HS Hya. Collecting all available photometric data since its discovery, the light curves were analyzed with a special focus on the evolution of system's inclination. Results. We find that the system undergoes a rapid change of inclination. Since its discovery until today the system's inclination changed by more than 15 degrees The shape of the light curve changes, and now the eclipses are almost undetectable. The third distant component of the system is causing the precession of the close orbit, and the nodal period is about 631 yr. Conclusions. New precise observations are desperately needed, preferably this year, because the amplitude of variations is decreasing rapidly every year. We know only 10 such systems on the whole sky at present. (en)
Title	HS Hydrae about to turn off its eclipses HS Hydrae about to turn off its eclipses (en)
skos:prefLabel	HS Hydrae about to turn off its eclipses HS Hydrae about to turn off its eclipses (en)
skos:notation	RIV/00216208:11320/12:10129491!RIV13-GA0-11320___
http://linked.open...avai/riv/aktivita	P Z
http://linked.open...avai/riv/aktivity	P(GAP209/10/0715), Z(MSM0021620860)
http://linked.open...iv/cisloPeriodika	červen
http://linked.open...vai/riv/dodaniDat	2013
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	139818
http://linked.open...ai/riv/idVysledku	RIV/00216208:11320/12:10129491
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	stars: solar-type; stars: fundamental parameters; stars: individual: HS Hydrae; binaries: eclipsing (en)
http://linked.open.../riv/klicoveSlovo	binaries: eclipsing stars: individual: HS Hydrae stars: solar-type stars: fundamental parameters
http://linked.open...odStatuVydavatele	DE - Spolková republika Německo
http://linked.open...ontrolniKodProRIV	[BCF11B87B9EC]
http://linked.open...i/riv/nazevZdroje	Astronomy and Astrophysics
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	2012
http://linked.open...v/svazekPeriodika	542
http://linked.open...iv/tvurceVysledku	Zasche, Petr Paschke, A.
http://linked.open...ain/vavai/riv/wos	000305803300160
http://linked.open...n/vavai/riv/zamer	Fyzikální studium objektů a procesů ve sluneční soustavě a v astrofyzikálních systémech
issn	0004-6361
number of pages	4 (xsd:int)
http://bibframe.org/vocab/doi	10.1051/0004-6361/201219392
http://localhost/t...ganizacniJednotka	11320

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