First ever dedicated X-ray observation of the enigmatic hypergiant IRC+10420

Details First ever dedicated X-ray observation of the enigmatic hypergiant IRC+10420 First ever dedicated X-ray observation of the enigmatic hypergiant IRC+10420

Oct 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010xmm..prop...44d&link_type=abstract

XMM-Newton Proposal ID #06710701

Other

Stars, White Dwarfs, Solar System, Irc+10420

Scientific paper

The hypergiant IRC+10420 is most probably a massive star evolving from the red supergiant phase to the Wolf-Rayet phase, crossing a particular location in the H-R diagram called the yellow void where stars are extremely rare and are dynamically unstable. This makes this object unique for the study of early-type star evolution, and the investigation of physical processes related to massive stars. Although several studies have been devoted to this enigmatic object in the infrared, it never benefited from a dedicated X-ray observation. We request a XMM observation of IRC+10420 aiming at characterizing for the first time its X-ray properties, and probe a part of the physics of this object that is not accessible at other wavelengths.

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