ZVERKO, Juraj, Jozef ŽIŽNOVSKÝ, Zdeněk MIKULÁŠEK, Jiří KRTIČKA, Ilian Kh. ILIEV, I. K. STATEVA, Iosif I. ROMANYUK a Dmitry O. KUDRYAVTSEV. The puzzling binary HD 143418. Astronomy and Astrophysics. Les Ulis Cedex, France: EDP Sciences, 2009, roč. 39, č. 506, s. 845-856. ISSN 0004-6361. Dostupné z: https://dx.doi.org/10.1051/0004-6361/200912540. |
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@article{852249, author = {Zverko, Juraj and Žižnovský, Jozef and Mikulášek, Zdeněk and Krtička, Jiří and Iliev, Ilian Kh. and Stateva, I. K. and Romanyuk, Iosif I. and Kudryavtsev, Dmitry O.}, article_location = {Les Ulis Cedex, France}, article_number = {506}, doi = {http://dx.doi.org/10.1051/0004-6361/200912540}, keywords = {stars: chemically peculiar - stars: binaries - stars:variables - stars: individual HD 143418 -- synchronisation}}, language = {eng}, issn = {0004-6361}, journal = {Astronomy and Astrophysics}, title = {The puzzling binary HD 143418}, url = {http://www.aanda.org/index.php?option=article&access=standard&Itemid=129&url=/articles/aa/abs/2009/41/aa12540-09/aa12540-09.html}, volume = {39}, year = {2009} }
TY - JOUR ID - 852249 AU - Zverko, Juraj - Žižnovský, Jozef - Mikulášek, Zdeněk - Krtička, Jiří - Iliev, Ilian Kh. - Stateva, I. K. - Romanyuk, Iosif I. - Kudryavtsev, Dmitry O. PY - 2009 TI - The puzzling binary HD 143418 JF - Astronomy and Astrophysics VL - 39 IS - 506 SP - 845-856 EP - 845-856 PB - EDP Sciences SN - 00046361 KW - stars: chemically peculiar - stars: binaries - stars:variables - stars: individual HD 143418 -- synchronisation} UR - http://www.aanda.org/index.php?option=article&access=standard&Itemid=129&url=/articles/aa/abs/2009/41/aa12540-09/aa12540-09.html N2 - HD 143418 is a double-lined binary, whose primary was designated as CP star. We acquired new spectra in order to study spectral line variability, a possible magnetic field and for abundance determination, which was performed by means of synthetic spectra. The photometric observations were subjected to a PCA disentangling of the complex photometric behaviour. Equivalent widths of the lines selected do not change; the star has no magnetic field. The abundance agrees solar chemical composition. The photometric variability is due to ellipticity of the primary component. We conclude the primary is a normal, mildly evolved A5V main sequence star. Seasonal orbitally modulated light variations may be related to the expected incidence of circumstellar matter originated from tidally spinning up primary component. HD 143418 may be a prototype of a rare detached interacting close binary containing subsynchronously rotating primary passing through its synchronisation stage. ER -
ZVERKO, Juraj, Jozef ŽIŽNOVSKÝ, Zdeněk MIKULÁŠEK, Jiří KRTIČKA, Ilian Kh. ILIEV, I. K. STATEVA, Iosif I. ROMANYUK a Dmitry O. KUDRYAVTSEV. The puzzling binary HD 143418. \textit{Astronomy and Astrophysics}. Les Ulis Cedex, France: EDP Sciences, 2009, roč.~39, č.~506, s.~845-856. ISSN~0004-6361. Dostupné z: https://dx.doi.org/10.1051/0004-6361/200912540.
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