About: Surprising variations in the rotation of the chemically peculiar stars CU Virginis and V 901 Orionis

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About: Surprising variations in the rotation of the chemically peculiar stars CU Virginis and V 901 Orionis 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://www.aanda.org/index.php?option=com_article&access=doi&doi=10.1051/0004-6361/201117784&Itemid=129
Description	We aim to study the stability of the periods in CU Vir and V901 Ori using all accessible observational data containing phase information. We found that the shapes of their phase curves were constant, while the periods were changing. Both stars exhibit alternating intervals of rotational braking and acceleration. The rotation period of CU Vir was gradually shortening until the year 1968, when it reached its local minimum of 0.52067198 d. The period then started increasing, reaching its local maximum of 0.5207163 d in the year 2005. Since that time the rotation has begun to accelerate again. We also found much smaller period changes in CU Vir on a timescale of several years. The rotation period of V901 Ori was increasing for the past quarter-century, reaching a maximum of 1.538771 d in the year 2003, when the rotation period began to decrease. We aim to study the stability of the periods in CU Vir and V901 Ori using all accessible observational data containing phase information. We found that the shapes of their phase curves were constant, while the periods were changing. Both stars exhibit alternating intervals of rotational braking and acceleration. The rotation period of CU Vir was gradually shortening until the year 1968, when it reached its local minimum of 0.52067198 d. The period then started increasing, reaching its local maximum of 0.5207163 d in the year 2005. Since that time the rotation has begun to accelerate again. We also found much smaller period changes in CU Vir on a timescale of several years. The rotation period of V901 Ori was increasing for the past quarter-century, reaching a maximum of 1.538771 d in the year 2003, when the rotation period began to decrease. (en)
Title	Surprising variations in the rotation of the chemically peculiar stars CU Virginis and V 901 Orionis Surprising variations in the rotation of the chemically peculiar stars CU Virginis and V 901 Orionis (en)
skos:prefLabel	Surprising variations in the rotation of the chemically peculiar stars CU Virginis and V 901 Orionis Surprising variations in the rotation of the chemically peculiar stars CU Virginis and V 901 Orionis (en)
skos:notation	RIV/00216224:14310/11:00049479!RIV12-GA0-14310___
http://linked.open...avai/riv/aktivita	P S
http://linked.open...avai/riv/aktivity	P(GD205/08/H005), P(IAA301630901), P(MEB061014), P(MEB0810095), S
http://linked.open...iv/cisloPeriodika	L5
http://linked.open...vai/riv/dodaniDat	2012
http://linked.open...aciTvurceVysledku	Janík, Jan Zejda, Miloslav Liška, Jiří Zvěřina, Pavel Mikulášek, Zdeněk Krtička, Jiří
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	Masarykova univerzita / Přírodovědecká fakulta
http://linked.open...dnocenehoVysledku	233525
http://linked.open...ai/riv/idVysledku	RIV/00216224:14310/11:00049479
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	stars: chemically peculiar – stars: variables: general – stars: individual: CU Vir – stars: individual: V901 Ori – stars: rotation (en)
http://linked.open.../riv/klicoveSlovo	stars: chemically peculiar – stars: variables: general – stars: individual: CU Vir – stars: individual: V901 Ori – stars: rotation
http://linked.open...odStatuVydavatele	FR - Francouzská republika
http://linked.open...ontrolniKodProRIV	[BD99F8A29998]
http://linked.open...i/riv/nazevZdroje	Astronomy and Astrophysics
http://linked.open...in/vavai/riv/obor	BN
http://linked.open...ichTvurcuVysledku	6 (xsd:int)
http://linked.open...cetTvurcuVysledku	16 (xsd:int)
http://linked.open...vavai/riv/projekt	New trends in extrinsic variable stars research Physics of Sun, stars, and stellar systems Spectral energy distribution of hot stars and its variability Magnetic and Variable Stars: From Ground to Space
http://linked.open...UplatneniVysledku	2011
http://linked.open...v/svazekPeriodika	534
http://linked.open...iv/tvurceVysledku	Sokolov Janík, Jan Liška, Jiří Mikulášek, Zdeněk Zejda, Miloslav Zvěřina, Pavel Krtička, Jiří Zverko, Juraj Žižnovský, Jozef Lüftinger, Theresa , Nikolay A. Henry, Gregory W. Kudrjavtsev, Dimitry O. Neiner, Coralie Romanyuk, Iosif. I. Trigilio, Corrado de Villiers, Stefanus N.
http://linked.open...ain/vavai/riv/wos	000296554800144
issn	0004-6361
number of pages	5 (xsd:int)
http://bibframe.org/vocab/doi	10.1051/0004-6361/201117784
http://localhost/t...ganizacniJednotka	14310

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