Drastic spectroscopic variability of the Be/X-Ray binary Ariel 0535+262/V725 Tau during and after the 2009 giant Outburst

Yuuki Moritani; Daisaku Nogami; Atsuo T. Okazaki; Akira Imada; Eiji Kambe; Satoshi Honda; Osamu Hashimoto; Kohei Ichikawa

doi:10.1093/pasj/63.4.L25

Drastic spectroscopic variability of the Be/X-Ray binary Ariel 0535+262/V725 Tau during and after the 2009 giant Outburst

Yuuki Moritani, Daisaku Nogami, Atsuo T. Okazaki, Akira Imada, Eiji Kambe, Satoshi Honda, Osamu Hashimoto, Kohei Ichikawa

Research output: Contribution to journal › Letter › peer-review

20 Citations (Scopus)

Abstract

We report on high-dispersion optical spectroscopic observations of the Be/X-ray binary A 0535+262/V725 Tau during a giant outburst in 2009 November/December, and after it. The observed emission line profiles, reflecting the structure of the geometrically thin circumstellar envelope of the Be star (Be disk), show drastic variabilities, and indicate the existence of a warped component. The enhanced blue shoulder seen after periastron passage implies a gas stream from a dense part of the Be disk to the neutron star.

Original language	English
Pages (from-to)	L25-L29
Journal	Publications of the Astronomical Society of Japan
Volume	63
Issue number	4
DOIs	https://doi.org/10.1093/pasj/63.4.L25
Publication status	Published - 2011 Aug 25
Externally published	Yes

Keywords

Be - stars
Binaries
Emission-line - stars
Spectroscopic - stars
Stars

ASJC Scopus subject areas

Astronomy and Astrophysics
Space and Planetary Science

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10.1093/pasj/63.4.L25

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Drastic spectroscopic variability of the Be/X-Ray binary Ariel 0535+262/V725 Tau during and after the 2009 giant Outburst. / Moritani, Yuuki; Nogami, Daisaku; Okazaki, Atsuo T.; Imada, Akira; Kambe, Eiji; Honda, Satoshi; Hashimoto, Osamu; Ichikawa, Kohei.

In: Publications of the Astronomical Society of Japan, Vol. 63, No. 4, 25.08.2011, p. L25-L29.

Research output: Contribution to journal › Letter › peer-review

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abstract = "We report on high-dispersion optical spectroscopic observations of the Be/X-ray binary A 0535+262/V725 Tau during a giant outburst in 2009 November/December, and after it. The observed emission line profiles, reflecting the structure of the geometrically thin circumstellar envelope of the Be star (Be disk), show drastic variabilities, and indicate the existence of a warped component. The enhanced blue shoulder seen after periastron passage implies a gas stream from a dense part of the Be disk to the neutron star.",

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AU - Moritani, Yuuki

AU - Nogami, Daisaku

AU - Okazaki, Atsuo T.

AU - Imada, Akira

AU - Kambe, Eiji

AU - Honda, Satoshi

AU - Hashimoto, Osamu

AU - Ichikawa, Kohei

PY - 2011/8/25

Y1 - 2011/8/25

N2 - We report on high-dispersion optical spectroscopic observations of the Be/X-ray binary A 0535+262/V725 Tau during a giant outburst in 2009 November/December, and after it. The observed emission line profiles, reflecting the structure of the geometrically thin circumstellar envelope of the Be star (Be disk), show drastic variabilities, and indicate the existence of a warped component. The enhanced blue shoulder seen after periastron passage implies a gas stream from a dense part of the Be disk to the neutron star.

AB - We report on high-dispersion optical spectroscopic observations of the Be/X-ray binary A 0535+262/V725 Tau during a giant outburst in 2009 November/December, and after it. The observed emission line profiles, reflecting the structure of the geometrically thin circumstellar envelope of the Be star (Be disk), show drastic variabilities, and indicate the existence of a warped component. The enhanced blue shoulder seen after periastron passage implies a gas stream from a dense part of the Be disk to the neutron star.

KW - Be - stars

KW - Binaries

KW - Emission-line - stars

KW - Spectroscopic - stars

KW - Stars

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Drastic spectroscopic variability of the Be/X-Ray binary Ariel 0535+262/V725 Tau during and after the 2009 giant Outburst

Abstract

Keywords

ASJC Scopus subject areas

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