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[15.16] Multiwavelength Observations of the Ultraluminous X-ray Sources in NGC 1313

I.A. Smith (Rice University), M. Boettcher (Ohio University), S. Ryder (AAO), M.W. Pakull (Observatoire Astronomique de Strasbourg)

The nearby (3.7 Mpc) late-type barred spiral galaxy NGC 1313 has long been a subject of detailed multiwavelength observations. Of particular recent interest are three ultraluminous X-ray sources (ULXs) that are offset from the center of the galaxy. Two of these have been associated with optical ionized nebulae, and their spectral and variability properties indicate they contain black holes. The third ULX is SN 1978K, which was the second supernova to be detected and recognized as a supernova from its radio emission, and the first from its X-rays. Here we will discuss some of the results from our ongoing program of X-ray (XMM-Newton), optical (VLT), and radio (ATCA) observations of these and other sources in NGC 1313.

This work has been supported by NASA grants NNG04GC64G and NNG04G100G.

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Bulletin of the American Astronomical Society, 36 #3
© 2004. The American Astronomical Soceity.