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Astron. Astrophys. 326, 108-112

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Observations of the 57Fe+23 hyperfine transition
in clusters of galaxies

H. Liang1,2,3, J.M. Dickey2,4, G. Moorey2, and R.D. Ekers2

1H.H. Wills Physics Laboratory, University of Bristol, Bristol BS8 1TL, UK
2Australia Telescope National Facilities, CSIRO, Epping, NSW 2112, Australia
3Institut d'Astrophysique Spatiale, Université Paris XI, F-91405 Orsay Cedex, France
4University of Minnesota, 116 Church St. SE, Minneapolis, MN 55455 USA

Received 3 March 1997 / Accepted 24 April 1997


We present a search for the hyperfine transition of the 57Fe+23 ion at 3.071 mm in clusters of galaxies with the ATNF Mopra telescope. The results are compared with a realistic estimate of the peak brightness temperature of the line in a cooling flow cluster A85, using the available X-ray data.

Key words: galaxies: clusters - clusters of galaxies: individual Abell 85 - X-rays: galaxies - H II regions: 30 Dor

Send offprint requests to: H. Liang, h.liang@bristol.ac.uk

© European Southern Observatory (ESO) 1997

Online publication: September 9, 1997
Last change: April 20, 1998