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New HI Features of the Magellanic System

Published online by Cambridge University Press:  25 May 2016

M. E. Putman
Affiliation:
Mount Stromlo and Siding Spring Observatories, ANU, ACT 2611, Australia
B. K. Gibson
Affiliation:
CASA, University of Colorado, Boulder, CO 80309, USA
L. Staveley-Smith
Affiliation:
Australia Telescope National Facility, CSIRO, NSW 2121, Australia

Abstract

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The first results from the HI Parkes All-Sky Survey (HIPASS) provide a spectacular view of the global HI distribution in the vicinity of the Magellanic Clouds and the southern Milky Way. A 2400 square degree mosaic around the South Celestial Pole (SCP) reveals the existence of a narrow, continuous counter-stream which “leads” the direction of motion of the Clouds, i.e., opposite in direction to the Stream. This strongly supports the gravitational model for the Stream in which the leading and trailing streams are tidally torn from the body of the Magellanic Clouds. The data also reveal additional tidal features in the Bridge region which appear to emanate from the LMC, and a distinct spiral structure within the LMC itself.

Type
Part 2. Interstellar Medium
Copyright
Copyright © Astronomical Society of the Pacific 1999 

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