Suzaku X-Ray Spectroscopy of a Peculiar Hot Star in the Galactic Center Region

We present the results of a Suzaku study of a bright point-like source in the 6.7 keV intensity map of the Galactic center region. We detected an intense Fe XXV 6.7 keV line with an equivalent width of � 1 keV as well as emission lines of highly ionized Ar and Ca from a spectrum obtained by the X-ray Imaging Spectrometer. The overall spectrum is described very well by a heavily absorbed (� 2 � 10 23 cm � 2 ) thin thermal plasma model with a temperature of 3.8 ˙ 0.6 keV and a luminosity of � 3 � 10 34 erg s � 1 (2.0–8.0 keV) at 8 kpc. The absorption, temperature, luminosity, and the 6.7 keV line intensity were confirmed with the archived XMM-Newton data. The source has