University of Hertfordshire

From the same journal

From the same journal

By the same authors

Dark matter in the dwarf galaxy II Zwicky 40

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Original languageEnglish
Pages (from-to)63-67
JournalMonthly Notices of the Royal Astronomical Society
Journal publication date1 Mar 1988
Volume231
Publication statusPublished - 1 Mar 1988

Abstract

H I observations of the blue compact dwarf galaxy II Zwicky 40 at high angular resolution reveal the presence of two kinematical systems. The H I structure and kinematics can be understood in terms of two interacting H I clouds, each cloud consisting of about 2×108M_sun; of neutral gas. The optical emission is located at the centre of the northern cloud and might be the result of recent star formation which is triggered by the interaction. The authors estimate total masses of order 3×109M_sun; for each cloud. This exceeds the visible mass by an order of magnitude and indicates the presence of dark matter in II Zwicky 40.

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