A low-mass HI companion of NGC 1569?

Details A low-mass HI companion of NGC 1569? A low-mass HI companion of NGC 1569?

1998-06-19

arxiv.org/abs/astro-ph/9806267v1

Astronomy and Astrophysics

Astrophysics

5 pages, 4 figures, 1 table

Scientific paper

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 7*10**6 M_sun, 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_alpha arcs, also detected in soft X-rays.

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