| ZVERKO, Juraj, Jozef ŽIŽNOVSKÝ, Zdeněk MIKULÁŠEK, Jiří KRTIČKA, Ilian Kh. ILIEV, I. K. STATEVA, Iosif I. ROMANYUK and Dmitry O. KUDRYAVTSEV. The puzzling binary HD 143418. Astronomy and Astrophysics. Les Ulis Cedex, France: EDP Sciences, 2009, vol. 39, No 506, p. 845-856. ISSN 0004-6361. Available from: 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 and Dmitry O. KUDRYAVTSEV. The puzzling binary HD 143418. \textit{Astronomy and Astrophysics}. Les Ulis Cedex, France: EDP Sciences, 2009, vol.~39, No~506, p.~845-856. ISSN~0004-6361. Available from: https://dx.doi.org/10.1051/0004-6361/200912540.
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