HD 306414: Optical Counterpart to the Peculiar X-ray Transient IGR J11215-5952

Details HD 306414: Optical Counterpart to the Peculiar X-ray Transient IGR J11215-5952 HD 306414: Optical Counterpart to the Peculiar X-ray Transient IGR J11215-5952

Dec 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010aspc..435..407n&link_type=abstract

Binaries - Key to Comprehension of the Universe. Proceedings of a conference held June 8-12, 2009 in Brno, Czech Republic. Edite

Astronomy and Astrophysics

Astronomy

Scientific paper

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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