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Astron. Astrophys. 326, 108-112 (1997)

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Observations of the [FORMULA] Fe [FORMULA] hyperfine transition in clusters of galaxies

H. Liang 1, 2, 3, J.M. Dickey 2, 4, G. Moorey 2 and R.D. Ekers 2

1 H.H. Wills Physics Laboratory, University of Bristol, Bristol BS8 1TL, UK
2 Australia Telescope National Facilities, CSIRO, Epping, NSW 2112, Australia
3 Institut d'Astrophysique Spatiale, Université Paris XI, F-91405 Orsay Cedex, France
4 University 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 57 Fe [FORMULA] 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

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© European Southern Observatory (ESO) 1997

Online publication: April 20, 1998