Rotational period variations in magnetic chemically peculiar star HD 37776
Identifikátory výsledku
Kód výsledku v 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>
Výsledek na webu
<a href="http://jenam2011.org/conf/" target="_blank" >http://jenam2011.org/conf/</a>
DOI - Digital Object Identifier
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Alternativní jazyky
Jazyk výsledku
angličtina
Název v původním jazyce
Rotational period variations in magnetic chemically peculiar star HD 37776
Popis výsledku v původním jazyce
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.
Název v anglickém jazyce
Rotational period variations in magnetic chemically peculiar star HD 37776
Popis výsledku anglicky
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.
Klasifikace
Druh
O - Ostatní výsledky
CEP obor
BN - Astronomie a nebeská mechanika, astrofyzika
OECD FORD obor
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Návaznosti výsledku
Projekt
<a href="/cs/project/IAA301630901" target="_blank" >IAA301630901: Rozložení energie ve spektru horkých hvězd a jeho proměnnost</a><br>
Návaznosti
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>S - Specificky vyzkum na vysokych skolach
Ostatní
Rok uplatnění
2011
Kód důvěrnosti údajů
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů