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Astron. Astrophys. 318, 11-14 (1997)


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Research Note

A compact radio component in 4C 41.17 at z=3.8: a massive clump in a forming galaxy?

L.I. Gurvits 1, 2, R.T. Schilizzi 1, 3, G.K. Miley 3, A. Peck 4, M.N. Bremer 3, H. Röttgering 3 and W. van Breugel 5

1 Joint Institute for VLBI in Europe, P.O. Box 2, 7990 AA Dwingeloo, The Netherlands
2 Astro Space Center of P.N. Lebedev Physical Institute, Leninsky pr. 53, Moscow 117924, Russia
3 Leiden Observatory, P.O. Box 9513, 2300 RA, Leiden, The Netherlands
4 New Mexico Institute of Mining & Technology, Dept. of Physics, Socorro, NM 87801, USA
5 Inst. of Geophysics and Planetary Physics, LLNL, P.O. Box 808, L-413, Livermore, CA 94550, USA

Received 13 March 1996 / Accepted 20 June 1996

Abstract

We present the results of a study of the centiarcsecond radio structure at wavelength of 18 cm in the high-redshift galaxy associated with the radio source 4C 41.17 ([FORMULA]). We have detected a component of size not more than 15 mas ([FORMULA] pc, [FORMULA] km s-1 Mpc-1, [FORMULA]) at a distance of [FORMULA] kpc from the nucleus of the galaxy which accounts for [FORMULA] 30% of the flux density of the previously known unresolved VLA component. We speculate that the radio component is associated with a clump in the interstellar medium. The estimate of its mass, [FORMULA], is consistent with those of subgalactic structures preceding formation of globular clusters in the early stages of the evolution of galaxies.

Key words: galaxies: individual: 4C 41.17 – radio continuum: galaxies – galaxies: jets – galaxies: star clusters

Send offprint requests to: L.I. Gurvits, 1st address, e-mail: lgurvits@jive.nfra.nl

© European Southern Observatory (ESO) 1997

Online publication: July 8, 1998

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