D 2017

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

JEŘÁBKOVÁ, Tereza, Daniela KORČÁKOVÁ, A. S. MIROSHNICHENKO, S. DANFORD, S. V. ZHAKIROV et. al.

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 (203 Česká republika), Daniela KORČÁKOVÁ (203 Česká republika), A. S. MIROSHNICHENKO (643 Rusko), S. DANFORD (840 Spojené státy), S. V. ZHAKIROV (643 Rusko), Radek KŘÍČEK (203 Česká republika), Petr ZASCHE (203 Česká republika), Viktor VOTRUBA (203 Česká republika), Miroslav ŠLECHTA (203 Česká republika), Petr ŠKODA (203 Česká republika) a Jan JANÍK (203 Česká republika, garant, domácí)

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

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"

Kód RIV

RIV/00216224:14310/17:00096530

Organizační jednotka

Přírodovědecká fakulta

ISBN

978-1-58381-900-5

DOI

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

Příznaky

Mezinárodní význam
Změněno: 3. 4. 2019 14:07, RNDr. Jan Janík, Ph.D.

Anotace

ORIG CZ

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.