Other
Scientific paper
Oct 2004
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004xmm..prop...98s&link_type=abstract
XMM-Newton Proposal ID #03026402
Other
Stars, White Dwarfs, Solar System, Fu Ori, V1057 Cyg, Xmm-Newton Proposal 03026402
Scientific paper
FU Orionis objects (FUors) are a remarkable class of low-mass pre-main-sequence stars that are undergoing disk accretion at very high rates. Classical FUors have all experienced dramatic optical outbursts attributed to a sudden increase in the disk accretion rate. Because of their youth and strong accretion, FUors should be X-ray sources. However, X-ray observations are almost non- existent. We detected the prototype FU Ori in a short 17 ksec XMM-EPIC observation in AO-3, but the data are affected by high background radiation. We propose here to reobserve FU Ori and to obtain first observations of the three other known classical FUors. These observations will define the properties of this newly discovered class of X-ray sources.
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