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The stellar environment of SMC N81

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 نشر من قبل Mohammad Heydari-Malayeri
 تاريخ النشر 2003
  مجال البحث فيزياء
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We present near infrared JHK imaging of the Small Magellanic Cloud compact H II region N81 using the ISAAC camera at the ESO Very Large Telescope (Antu). Our analysis of the stellar environment of this young massive star region reveals the presence of three new stellar populations in the surrounding field which are mainly composed of low mass stars. The main population is best fitted by evolutionary models for about 2 solar mass stars with an age of 1 Gyr. We argue that these populations are not physically associated with the H II region N81. Instead they are the result of a number of low mass star forming events through the depth of the SMC south of its Shapleys wing. The populations can rather easily be probed due to the low interstellar extinction in that direction.

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