AAS 198th Meeting, June 2001
Session 87. Galactic Star Forming Regions
Oral, Thursday, June 7, 2001, 2:00-3:30pm, C106

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[87.09] Chandra Observations of the Galactic Center Radio Arc: Detection of X-ray Emission from the Arches Cluster

F. Yusef-Zadeh (Northwestern U.), A. Cotera (U. Arizona), A. Fruscione (CfA), C. Lang (U. Massachusetts), C. Law (CfA), D. Wang (U. Massachusetts), M. Wardle (U. Sydney)

X-ray observations of the radio Arc near the Galactic center at l~.20 have been carried out with the Advanced CCD Imaging Spectrometer (ACIS) on board Chandra. The field of view includes the Arches cluster, the Quintuplet cluster and the nonthermal radio filaments of the radio Arc. The Arches cluster is an extraordinarily massive star cluster which consists of more than 100 O stars with initial stellar masses greater than 20 solar mass near G0.12-0.02. We present an overview of our findings including the detection of X-ray emission from the Arches cluster as well as a linear X-ray feature lying adjacent to the nonthermal filaments. The brightest component of the X-ray cluster coincides with a number of ionized stellar wind sources detected at radio wavelengths. We discuss the nature of the X-ray emission from the two stellar clusters and the nonthermal filaments.


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