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XTE J0111.2-7317 : a nebula-embedded X-ray binary in the SMC

M. J. Coe·N. J. Haigh·C. A. Wilson·I. Negueruela
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Abstract

The observed characteristics of the nebulosity surrounding the SMC High Mass X-ray Binary XTE J0111.2-7317 are examined in the context of three possible nebular types: SNR, bowshock and HII region. Observational evidence is presented which appears to support the interpretation that the nebulosity surrounding XTE J0111.2-7317 is an HII region. The source therefore appears to be a normal SMC Be X-ray binary (BeXRB) embedded in a locally enhanced ISM which it has photoionised to create an HII region. This is supported by observations of the X-ray outburst seen with BATSE and RXTE in 1998-1999. It exhibited characteristics typical of a giant or type II outburst in a BeXRB including large spin-up rates, Lx~10E38 erg/sq.cm-s, and a correlation between spin-up rate and pulsed flux. However, the temporal profile of the outburst was unusual, consisting of two similar intensity peaks, with the first peak of shorter duration than the second.

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M. J. Coe, N. J. Haigh, C. A. Wilson, I. Negueruela. 2003-06-05. XTE J0111.2-7317 : a nebula-embedded X-ray binary in the SMC. https://doi.org/10.1046/j.1365-8711.2003.06875.x

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