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Paper: HD 306414: Optical Counterpart to the Peculiar X-ray Transient IGR J11215-5952
Volume: 435, Binaries – Key to Comprehension of the Universe
Page: 407
Authors: Negueruela, I.; Lorenzo, J.; Herrero, A.; Norton, A. J.
Abstract: We present high-resolution spectroscopy of HD 306414, optical counterpart to the hard X-ray transient IGR J11215–5952, an object belonging to the class of Supergiant Fast X-ray Transients. We derive a spectral type B0.5 Ia for HD 306414 and determine its stellar parameters from an atmosphere model fit to the spectrum. Our data, taken around the time of the February 2007 X-ray outburst, show large variations in the shape of the Hα emission feature and the radial velocities of metallic lines about the time of the X-ray emission.
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