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HI in the Small Magellanic Cloud Re-examined

Published online by Cambridge University Press:  25 April 2016

R. X. McGee  and
Lynette M. Newton
R. X. McGee
Affiliation:
Division of Radiophysics, CSIRO, Sydney
Lynette M. Newton
Affiliation:
Division of Radiophysics, CSIRO, Sydney
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Extract

Our re-examination of the neutral hydrogen gas in the Small Magellan Cloud has led to four important results. Firstly, we find that Hindman’s (1967) total content HI map is a satisfactory representation of the gas in the line of sight. Secondly, we find that the HI gas in the SMC exists in four distinct large masses separated from one another in radial velocity by 20 to 30 km s−1. Thirdly, having made this division of the gas we show that there is good correlation between the radial velocities of HII regions, supergiant stars and HI. Finally, we believe that our observations reveal that the SMC is associated with an extremely large trailing halo of HI gas which forms the major component of the inter-cloud bridge region.

Type
Contributions
Information
Publications of the Astronomical Society of Australia , Volume 4 , Issue 2 , 1981 , pp. 189 - 195
Copyright
Copyright © Astronomical Society of Australia 1981

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