HD 143 418 - an Interacting Binary with a Sub-Synchronously Rotating Primary

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14310%2F10%3A00049409" target="_blank" >RIV/00216224:14310/10:00049409 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
HD 143 418 - an Interacting Binary with a Sub-Synchronously Rotating Primary
Original language description
HD143418 is a non-eclipsing double-lined close binary with orbital period Porb = 2.282520 d. The photometrically and spectroscopically dominant primary component is a normal A5V star in the middle of its stay on the main sequence with extremely slow, subsynchronous rotation (P_rot being about 14 days!). Its photometric monitoring since 1982 revealed orbitally modulated variations with changing form and amplitude. The advanced principal component analysis (APCA) disentangling extracted a steady part of light curves obviously caused by the ellipticity of the primary. Seasonal components of the light curves may be related to an expected incidence of circumstellar matter ejected from the tidally spinning up primary component. A possible scenario of the synchronisation process is also briefly discussed.
Czech name
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Czech description
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Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2010
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection
ASP Conference Series 435 - Binaries - Key to Comprehension to the Universe
ISBN
978-1-58381-750-6
ISSN
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e-ISSN
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Number of pages
4
Pages from-to
319-322
Publisher name
Astronomical Society of the Pacific
Place of publication
San Francisco, USA
Event location
Brno, Czech Republic
Event date
Jan 1, 2009
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
000289880000074

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