Time-Dependent Spectral Feature Variations of the FS CMa Star HD 50138

JEŘÁBKOVÁ, Tereza; Daniela KORČÁKOVÁ; A. S. MIROSHNICHENKO; S. DANFORD; S. V. ZHAKIROV; Radek KŘÍČEK; Petr ZASCHE; Viktor VOTRUBA; Miroslav ŠLECHTA; Petr ŠKODA a Jan JANÍK. Time-Dependent Spectral Feature Variations of the FS CMa Star HD 50138. In A. Miroshnichenko, S. Zharikov, D, Korcakova. The B[e] Phenomenon: Forty Years of Studies. 508. vyd. San Francisco: Astronomical Society of the Pacific, 2017, s. 375-376. ISBN 978-1-58381-900-5.

Základní údaje

Originální název

Time-Dependent Spectral Feature Variations of the FS CMa Star HD 50138

Název česky

Time-Dependent Spectral Feature Variations of the FS CMa Star HD 50138

Autoři

JEŘÁBKOVÁ, Tereza; Daniela KORČÁKOVÁ; A. S. MIROSHNICHENKO; S. DANFORD; S. V. ZHAKIROV; Radek KŘÍČEK; Petr ZASCHE; Viktor VOTRUBA; Miroslav ŠLECHTA; Petr ŠKODA a Jan JANÍK ORCID

Vydání

508. vyd. San Francisco, The B[e] Phenomenon: Forty Years of Studies, od s. 375-376, 2 s. 2017

Nakladatel

Astronomical Society of the Pacific

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Další údaje

Jazyk

angličtina

Typ výsledku

Stať ve sborníku

Obor

10308 Astronomy

Stát vydavatele

Spojené státy

Utajení

není předmětem státního či obchodního tajemství

Forma vydání

tištěná verze "print"

Označené pro přenos do RIV

Ano

Kód RIV

RIV/00216224:14310/17:00096530

Organizační jednotka

Přírodovědecká fakulta

ISBN

978-1-58381-900-5

UT WoS

000401591600059

Klíčová slova česky

circumstellar matter; stars: emission line Be; stars: mass loss; binaries: spectroscopic; stars: individual: MWC 158

Klíčová slova anglicky

circumstellar matter; stars: emission line Be; stars: mass loss; binaries: spectroscopic; stars: individual: MWC 158

Štítky

NZ

Příznaky

Mezinárodní význam

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Anotace

V originále

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.

Česky

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.