Superbubble VS Supergiant Shell: Comparing the X-ray gas in N44 and LMC-2

Details Superbubble VS Supergiant Shell: Comparing the X-ray gas in N44 and LMC-2 Superbubble VS Supergiant Shell: Comparing the X-ray gas in N44 and LMC-2

Dec 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995aas...187.4509m&link_type=abstract

American Astronomical Society, 187th AAS Meeting, #45.09; Bulletin of the American Astronomical Society, Vol. 27, p.1348

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Superbubbles are the ~ 100 pc diameter shells found around OB associations. Supergiant shells are the ~ 1000 pc diameters shells found around large stellar ``complexes''. Both may contain hot gas, but the heating history and cooling timescales are likely to be very different. N44 and LMC-2 in the LMC are the only resolved superbubble and supergiant shell to have been observed with ASCA. These two structures are generally similar, morphologically, but have very different sizes (60 pc for N44; 900 pc for LMC-2) and ages (a few Myr for N44; a few tens of Myr for LMC-2). There have been reports of blowouts in both structures. We have used the spectroscopic capabilities of ASCA to compare the physical condition of the X-ray gas in these two regions. Optical observations of the stellar populations have helped to constrain the energy input to the two structures.

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