Astronomy and Astrophysics – Astrophysics
Scientific paper
Mar 1997
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997a%26a...319..973a&link_type=abstract
Astronomy and Astrophysics, v.319, p.973-980
Astronomy and Astrophysics
Astrophysics
10
Ism: Bubbles, Ism: Hii Regions, Ism: Individual Objects: N 103 (Lha 120-N 103A, Lha 120-N 103B), Ism: Kinematics And Dynamics, Ism: Supernova Remnants, Galaxies: Magellanic Clouds
Scientific paper
We have observed the HII region N 103 of the Large Magellanic Cloud with a scanning Fabry-Perot interferometer at Hα and [OIII]5007 wavelengths. The kinematics of this field shows high velocity motions. We discuss their origin: Supernova explosion or particularly strong stellar winds. By calculating the energy input inside the gas, we show that it is unlikely that the high velocity motions are due to the stellar winds of the embbeded stars. Then the nebula N 103 is linked to two supernova remnants of different ages. The oldest one can be represented by a bubble, 152pc wide, seen projected against the HII region, and probably lying at the edge of the HII region. The exciting stars of the nebula are actually members of the LMC cluster NGC 1850B; they provide a photon flux large enough to ionize the quiet part of the gas.
Ambrocio-Cruz Patricia
Amram Ph.
Laval A.
Marcelin Michel
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