[en] We report on the first near-IR [Fe II] line imaging survey of extragalactic SNRs. Observations of a sample of 42 objects drawn from an optically-selected catalogue of SNRs in M33 provide evidence for a wide range in the [Fe II]λ 1.644 micron luminosities. This can be understood as being primarily due to variations in the chemical abundances and density of the local ISM, although shock conditions may also play a significant role. We briefly discuss how these results may be used to better calibrate the supernova rate of star-forming galaxies.
Disciplines :
Space science, astronomy & astrophysics
Author, co-author :
Morel, Thierry ; Astrophysics Group, Imperial College of Science, Technology and Medicine, Blackett Laboratory, Prince Consort Road, London SW7 2BZ
Doyon, R.
St-Louis, N.
Language :
English
Title :
A Near-IR [Fe II] line imaging survey of supernova remnants in M33
