X-ray emission from the pre-main sequence star ZCMa during a FUOri-type outburst

Details X-ray emission from the pre-main sequence star ZCMa during a FUOri-type outburst X-ray emission from the pre-main sequence star ZCMa during a FUOri-type outburst

Sep 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007cxo..prop.2740s&link_type=abstract

Chandra proposal ID #09208317

Computer Science

Scientific paper

We propose for the first X-ray spectrum of an FUOri object during outburst. The FUOR phenomenon is associated with a sudden increase of the accretion rate in some pre-main sequence (PMS) stars, possibly due to changes in the magnetic field. In the first X-ray survey of FUORs Skinner et al. (2007) have detected two of four targets. None of them was in outburst at the time. The typical two-temperature spectrum of a PMS star requires in the case of FUOri different absorptions for the soft and hard components (Skinner et al. 2006). Our target ZCMa is a young F-type FUOR. In Feb 2008 ZCMa started its so far largest outburst, with a further enhancement ~2 weeks ago. In May 2008 we have detected its magnetic field. Now we aim at an X-ray detection of ZCMa in its `super-outburst'.

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