ROSAT observation of the giant HII region RCW 49

Details ROSAT observation of the giant HII region RCW 49 ROSAT observation of the giant HII region RCW 49

Jun 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994a%26a...286..935b&link_type=abstract

Astronomy and Astrophysics 286, 935-942 (1994)

Astronomy and Astrophysics

Astrophysics

22

Ism: Rcw 49, Hii Regions, X-Rays: Ism, Ism: Bubbles

Scientific paper

We have observed the southern emission nebula RCW 49 with the PSPC instrument on board the ROSAT satellite. Diffuse X-ray emission is seen to extend over a large portion of the detector. Two regions of X-ray emission can be identified: one associated to the core of the optical nebula, where the X-ray correlate with the optical, and a fainter one anticorrelated with the optical. The young star cluster Westerlund 2 is detected as peaked emission inside the core region, and is resolved in at least three point sources. The morphology and possible nature of the extended X-ray emission are discussed, together with their interrelation with other objects in the field. Among the additional point sources detected in the field, two of the three Wolf-Rayet stars present in this region are tentatively identified.

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