A large supershell H II region complex in the Large Magellanic Cloud and the interstellar environment of SN 1987A

Details A large supershell H II region complex in the Large Magellanic Cloud and the interstellar environment of SN 1987A A large supershell H II region complex in the Large Magellanic Cloud and the interstellar environment of SN 1987A

Apr 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991apj...370..551b&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 370, April 1, 1991, p. 551-558.

Astronomy and Astrophysics

Astrophysics

12

Cosmic Dust, Gas Ionization, H Ii Regions, Interstellar Matter, Magellanic Clouds, Supernova 1987A, Carbon, Imaging Techniques, Silicon, Star Formation, Ultraviolet Spectra

Scientific paper

Results from narrow-bandpass optical imagery of the LMC, acquired prior to the supernova event are discussed, with special emphasis on the region about SN 1987A. The observations reveal the presence of an extremely large H II region complex, mostly embedded in an even larger dust ring. The H II region is roughly 1 kpc in diameter. This region is ionized by over 700 luminous OB stars that comprise the 'star clouds' dispersed throughout the region. The 1.5 x 2 kpc dimension of the large dust ring or supershell enshrouding this H II region is traced out as enhanced extinction in narrow-bandpass imagery of the continuum at 4215 A. The results also indicate that SN 1987A occurred in the cavity carved out by the combined stellar winds and the previous supernova explosions produced by the large number of massive stars in the region.

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