A spectroscopic search for high-mass X-ray binaries in M31

Benjamin F Williams,D Hatzidimitriou, Jerica M Green,G Vasilopoulos, Ricardo Alberto Covarrubias,Wolfgang Pietsch,Holger Stiele,Frank Haberl,P Bonfini

Monthly Notices of the Royal Astronomical Society（2014）

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摘要

We present new optical spectroscopy of 20 candidate counterparts of 17 X-ray sources in the direction of the M31 disc. By comparing the X-ray catalogue from the XMM–Newton survey of M31 with star catalogues from the Local Group Galaxy Survey, we chose counterpart candidates based on optical colour and X-ray hardness. We have discovered 17 counterpart candidates with spectra containing stellar feat...

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关键词

galaxies: individual: M31,galaxies: spiral,X-rays: binaries

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