Rotational period variations in magnetic chemically peculiar star HD 37776
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14310%2F11%3A00049549" target="_blank" >RIV/00216224:14310/11:00049549 - isvavai.cz</a>
Result on the web
<a href="http://jenam2011.org/conf/" target="_blank" >http://jenam2011.org/conf/</a>
DOI - Digital Object Identifier
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Alternative languages
Result language
angličtina
Original language name
Rotational period variations in magnetic chemically peculiar star HD 37776
Original language description
Three decades of a precise photometric and spectroscopic monitoring of the young hot magnetic chemically peculiar star HD 37776 have revealed its continual rotational deceleration, increasing the period by a remarkable 18 s! The deceleration was interpreted as the rotational braking of the outer stellar layers due to the angular momentum loss in the stellar magnetosphere. Observational data have been recently supplemented by own new photometric data. We present here the results of the sophisticated analysis of all available observed data showing that the period reached its maximum of 1.538766 d in the year 2004, when the rotation period began to decrease. The nature of such unpredicted period changes and the paradox of the spin-down time are briefly discussed.
Czech name
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Czech description
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Classification
Type
O - Miscellaneous
CEP classification
BN - Astronomy and celestial mechanics, astrophysics
OECD FORD branch
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Result continuities
Project
<a href="/en/project/IAA301630901" target="_blank" >IAA301630901: Spectral energy distribution of hot stars and its variability</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>S - Specificky vyzkum na vysokych skolach
Others
Publication year
2011
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů