On the supernova remnant S8 and other gaseous nebulae in IC 1613.

Astronomy and Astrophysics – Astronomy

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H Ii Regions:Irregular Galaxies, Irregular Galaxies:Element Abundances, Irregular Galaxies:H Ii Regions, Irregular Galaxies:Supernova Remnants, Supernova Remnants:Irregular Galaxies

Scientific paper

Photoelectric spectrophotometry of emission lines in the λλ3400 - 7400 A region is presented for the supernova remnant S8 and for the gaseous nebula S11 in IC 1613. It is found that S8 was produced by a type II supernova event, with a total energy of 2×1051erg. The physical conditions before and after the shock were obtained; from these conditions it follows that for the same density of the interstellar medium, the magnetic field in IC 1613 would be smaller than that in the solar vicinity. From the observations of S8 and models for supernova remnants, the relative abundances of H, He, N, O, Ne and S were determined.

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