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@inproceedings{1378996,
author = {Jeřábková, Tereza and Korčáková, Daniela and Miroshnichenko, A. S. and Danford, S. and Zhakirov, S. V. and Kříček, Radek and Zasche, Petr and Votruba, Viktor and Šlechta, Miroslav and Škoda, Petr and Janík, Jan},
address = {San Francisco},
booktitle = {The B[e] Phenomenon: Forty Years of Studies},
doi = {http://dx.doi.org/10.1051/0004-6361/201526290},
edition = {508},
editor = {A. Miroshnichenko, S. Zharikov, D, Korcakova},
keywords = {circumstellar matter; stars: emission line Be; stars: mass loss; binaries: spectroscopic; stars: individual: MWC 158},
howpublished = {tištěná verze "print"},
language = {eng},
location = {San Francisco},
isbn = {978-1-58381-900-5},
pages = {375-376},
publisher = {Astronomical Society of the Pacific},
title = {Time-Dependent Spectral Feature Variations of the FS CMa Star HD 50138},
year = {2017}
}
TY - JOUR
ID - 1378996
AU - Jeřábková, Tereza - Korčáková, Daniela - Miroshnichenko, A. S. - Danford, S. - Zhakirov, S. V. - Kříček, Radek - Zasche, Petr - Votruba, Viktor - Šlechta, Miroslav - Škoda, Petr - Janík, Jan
PY - 2017
TI - Time-Dependent Spectral Feature Variations of the FS CMa Star HD 50138
PB - Astronomical Society of the Pacific
CY - San Francisco
SN - 9781583819005
KW - circumstellar matter
KW - stars: emission line Be
KW - stars: mass loss
KW - binaries: spectroscopic
KW - stars: individual: MWC 158
N2 - HD 50138 (V743 Mon, MWC 158, or IRAS 06491-0654) is a B[e] star of the FS CMa type. It is supposed to be a post-main-sequence star, which is still not highly evolved. The presence of a gaseous and dusty envelope precludes direct observations of the central object, and the possible binarity and physical nature of HD 50138 remains unclear. We present a long-term spectroscopic monitoring of this object over the last 20 years (Jeřábková et al. 2016). Based on the obtained data, we confirm a quasi-periodic behavior of the object's spectral variability with two newly found long periods manifested in the Halpha and forbidden [O I] lines. The rotating structures around the object are supported by the detection of moving humps in the Halpha profile. Our results are consistent with either mass transfer in a binary system or the presence of an outflowing disk. Since our data cannot confirm the presence of a binary companion, the origin of such systems remains an interesting problem for further investigation.
ER -
JEŘÁBKOVÁ, Tereza, Daniela KORČÁKOVÁ, A. S. MIROSHNICHENKO, S. DANFORD, S. V. ZHAKIROV, Radek KŘÍČEK, Petr ZASCHE, Viktor VOTRUBA, Miroslav ŠLECHTA, Petr ŠKODA and Jan JANÍK. Time-Dependent Spectral Feature Variations of the FS CMa Star HD 50138. In A. Miroshnichenko, S. Zharikov, D, Korcakova. \textit{The B[e] Phenomenon: Forty Years of Studies}. 508th ed. San Francisco: Astronomical Society of the Pacific, 2017, p.~375-376. ISBN~978-1-58381-900-5. Available from: https://dx.doi.org/10.1051/0004-6361/201526290.
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