AAS 199th meeting, Washington, DC, January 2002
Session 91. Stellar Populations and Galactic Structure
Display, Wednesday, January 9, 2002, 9:20am-6:30pm, Exhibit Hall

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[91.18] Birth and Death in the Milky Way: X-ray and Radio Surveys of the Galactic Plane

D.J. Helfand, E.S. Laird, A.M. Brooks (Columbia University), R.H. Becker (UC Davis), R.L. White (STScI), R.S. Warwick, M.G. Watson (Leicester)

We have begun a high-resolution, high-sensitivity survey of the Galactic Plane at radio and X-ray wavelengths. Using the Very Large Array in its B-, C-, and D-configurations, we have constructed an image of the region 19\circ < l < 32\circ with 5\prime\prime resolution and a sensitivity of 1 mJy; an image of the same region at 90cm has also been obtained. Comparison of the radio maps with the MSX mid-infrared survey has revealed hundreds of HII regions and more than twenty new supernova remnant candidates. X-ray observations of the same region using the XMM-Newton Observatory have also begun; more than 4 deg2 has been covered to date with the detection of over 100 X-ray sources. Multiwavelength images will be presented and the prospects for constructing from these data a complete census of massive star formation and demise will be discussed.

This work has been supported in part by NASA under grant NAG5-9870.

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