MIKULÁŠEK, Zdeněk, Juraj ZVERKO, Jozef ŽIŽNOVSKÝ, Jiří KRTIČKA, Ilian Kh. ILIEV, Dmitry O. KUDRYAVTSEV, Tomáš GRÁF a Miloslav ZEJDA. HD 143 418 - an interacting binary with the subsynchronously rotating primary. In Mezinárodní konference: Binary stars - key to comprension of the Universe, Brno, 8.-12.6.2009. 2009. |
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@misc{864212, author = {Mikulášek, Zdeněk and Zverko, Juraj and Žižnovský, Jozef and Krtička, Jiří and Iliev, Ilian Kh. and Kudryavtsev, Dmitry O. and Gráf, Tomáš and Zejda, Miloslav}, booktitle = {Mezinárodní konference: Binary stars - key to comprension of the Universe, Brno, 8.-12.6.2009}, keywords = {HD 143 418}, language = {eng}, title = {HD 143 418 - an interacting binary with the subsynchronously rotating primary}, year = {2009} }
TY - SLIDE ID - 864212 AU - Mikulášek, Zdeněk - Zverko, Juraj - Žižnovský, Jozef - Krtička, Jiří - Iliev, Ilian Kh. - Kudryavtsev, Dmitry O. - Gráf, Tomáš - Zejda, Miloslav PY - 2009 TI - HD 143 418 - an interacting binary with the subsynchronously rotating primary KW - HD 143 418 N2 - HD 143 418 is a non-eclipsing 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 (Prot about 12 d!). Its photometric monitoring since 1982 revealed orbitally modulated variations with changing form and amplitude. PCA disentangling extracted a constant part of light curves obviously caused by the ellipticity of the primary. Seasonal components of light curves may be related to the expected incidence of circumstellar matter ejected from tidally spinning up primary component. A possible scenario of the synchronization process is also briefly discussed. ER -
MIKULÁŠEK, Zdeněk, Juraj ZVERKO, Jozef ŽIŽNOVSKÝ, Jiří KRTIČKA, Ilian Kh. ILIEV, Dmitry O. KUDRYAVTSEV, Tomáš GRÁF a Miloslav ZEJDA. HD 143 418 - an interacting binary with the subsynchronously rotating primary. In \textit{Mezinárodní konference: Binary stars - key to comprension of the Universe, Brno, 8.-12.6.2009}. 2009.
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