X-Ray Emission from High Mass Pre-Main Stars

Computer Science

Scientific paper

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Chandra Proposal Id #02200420

Scientific paper

X-rays from high mass remain sequence stars have not been well studied both in observation and theory. We propose an ASIC-I observation on a high mass star forming region, the Monoceros R2 cloud, since ASCA has already found variable hard X-ray sources embedded in the cloud. Our objectives are to resolve the hard X-rays spatially and investigate which massive stars are responsible for the hard X-rays. We then observe the plasma temperature, absorption column, time variability including flare activity and chemical composition of the resolved sources. These are key information for the X-ray emission mechanisms, hence the evolution of the massive young stars.

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