A detailed study of the post-starburst galaxy NGC 1569. III - A hole in the gas distribution

Details A detailed study of the post-starburst galaxy NGC 1569. III - A hole in the gas distribution A detailed study of the post-starburst galaxy NGC 1569. III - A hole in the gas distribution

Sep 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990a%26a...236..323i&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 236, no. 2, Sept. 1990, p. 323-326.

Astronomy and Astrophysics

Astrophysics

61

Dwarf Galaxies, Galactic Evolution, H I Regions, Interstellar Matter, Irregular Galaxies, Starburst Galaxies, Density Distribution, H Lines, Stellar Winds

Scientific paper

High-resolution H I column density maps of the poststarburst dwarf galaxy NGC 1569 are presented. The H I distribution has two remarkable features: a clumpy ridge, forming the northern boundary of the optical galaxy, and a 190 pc hole, centered on the peculiar object A, thought to be a very compact and very luminous star cluster. The hole is probably caused by stellar winds from object A. The cavity may have been formed about 2-million yr ago in a relatively tenuous medium. However, an origin shortly after the starburst 10-million yr ago in a dense medium is considered more likely.

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