Astronomy and Astrophysics – Astrophysics
Scientific paper
2001-11-12
Astronomy and Astrophysics
Astrophysics
9 pages including 7 figures, accepted for publication in A&A Main Journal
Scientific paper
10.1051/0004-6361:20011467
We have used MERLIN, at 1.4 and 5 GHz, to search for radio supernovae (RSNe) and supernova remnants (SNRs) in the unobscured irregular dwarf galaxy NGC1569, and in particular in the region of its super star clusters (SSCs) A and B. Throughout NGC1569 we find some 5 RSNe and SNRs but the SSCs and their immediate surroundings are largely devoid of non-thermal radio sources. Even though many massive stars in the SSCs are expected to have exploded already, when compared with M82 and its many SSCs the absence of RSNe and SNRs in and near A and B may seem plausible on statistical arguments. The absence of RSNe and SNRs in and near A and B may, however, also be due to a violent and turbulent outflow of stellar winds and supernova ejected material, which does not provide a quiescent environment for the development of SNRs within and near the SSCs.
de Grijs Richard
Garrington Simon T.
Greve Albert
Huettemeister Susanne
Neininger Nikolaus
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