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Astron. Astrophys. 337, 64-68 (1998)

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A low-mass HI companion of NGC 1569?

J.M. Stil and F.P. Israel

Leiden Observatory, PO Box 9513, 2300 RA Leiden, The Netherlands

Received 4 March 1998 / Accepted 3 June 1998

Abstract

High-sensitivity maps of the large-scale structure of atomic hydrogen in the starburst dwarf galaxy NGC 1569 show evidence for an HI cloud with a mass of [FORMULA], at a projected distance of 5 kpc from the parent galaxy. This cloud may be a condensation in a low-column-density HI halo or a companion galaxy/HI-cloud. NGC 1569 and its companion are connected by a low surface brightness HI bridge. At the edge of NGC1569, the HI bridge coincides with H[FORMULA] arcs, also detected in soft X-rays.

Key words: ISM: atoms – galaxies: individual: NGC 1569 – galaxies: interactions – galaxies: irregular – galaxies: kinematics and dynamics – galaxies: starburst

Send offprint requests to: J.M. Stil
Correspondence to: stil@strw.leidenuniv.nl

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© European Southern Observatory (ESO) 1998

Online publication: August 6, 1998
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