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New Perspectives on the X‐Ray Emission of HD 104237 and Other Nearby Herbig Ae/Be Stars fromXMM‐NewtonandChandra
We present new X-ray observations of the nearby Herbig Ae star HD 104237 (= DX Cha) with XMM-Newton, whose objective is to clarify the origin of the emission. Several X-ray emission lines are clearly visible in the CCD spectra, including the high-temperature Fe K-alpha complex. The emission can be accurately modeled as a multi-temperature thermal plasma with cool (kT < 1 keV) and hot (kT > 3 keV) components. The presence of a hot component is compelling evidence that the X-rays originate indoi:10.1086/422708 fatcat:sg2lxmrirvbgfbnhjcpcik73hy