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The Ring of HI in LEO: Probing the Mass Distribution in a Galaxy Group

Published online by Cambridge University Press:  04 August 2017

Stephen E. Schneider ,
Edwin E. Salpeter  and
Yervant Terzian
Stephen E. Schneider
Affiliation:
Department of Astronomy, Cornell University
Edwin E. Salpeter
Affiliation:
Department of Astronomy, Cornell University
Yervant Terzian
Affiliation:
Department of Astronomy, Cornell University

Extract

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The intergalactic neutral hydrogen in the M96 group (Schneider et al. 1983) provides an unusual probe of the detailed mass distribution in a group of galaxies. Previous observations (Schneider 1985) tentatively suggested the existence of a large ring structure to the gas. Sensitive new observations made at Arecibo confirm that the intergalactic gas forms a 200 kpc diameter eccentric ring around the two central galaxies in the group, the giant elliptical galaxy NGC 3379 (M105) and the lenticular NGC 3384.

Type
Research Article
Information
Symposium - International Astronomical Union , Volume 117: Dark Matter in the Universe , 1987 , pp. 116
Copyright
Copyright © Reidel 1987 

References

Schneider, S. E. 1985, Ap. J. (Letters) 288, L33.Google Scholar
Schneider, S. E., Helou, G., Salpeter, E. E., and Terzian, Y. 1983 Ap. J. (Letters) 273, L1.Google Scholar
Tonry, J. L., and Davis, M. 1981 Ap. J. 246, 666.Google Scholar