An HI Aperture Synthesis Mosaic of the Magellanic Clouds

Details An HI Aperture Synthesis Mosaic of the Magellanic Clouds An HI Aperture Synthesis Mosaic of the Magellanic Clouds

May 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996aas...188.5104s&link_type=abstract

American Astronomical Society, 188th AAS Meeting, #51.04; Bulletin of the American Astronomical Society, Vol. 28, p.900

Astronomy and Astrophysics

Astronomy

Scientific paper

We present the results of a survey of neutral hydrogen emission in the Magellanic Clouds with the Australia Telescope Compact Array. For the SMC, the angular resolution is 1farcm6 over a field of 20 deg(2) . For the LMC, the angular resolution is 0farcm8 over a field of 130 deg(2) . For both clouds, the velocity resolution is 1.6 km s(-1) . In the SMC, we have kinematically identified eight supershells and nearly 500 giant shells. We use these to study the three-dimensional structure of the SMC and its evolutionary history. A burst of star-formation of age 5.4 Myr appears responsible for much of the present state of the interstellar medium in SMC. A preliminary analysis of our results for the LMC has identified, for the first time, a southern spiral arm.

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