Astron. Astrophys. 361, L41-L44 (2000)

Letter to the Editor

WSRT observations of the Hubble Deep Field region

M.A. Garrett ¹, A.G. de Bruyn ^2,4, M. Giroletti ^1,3, W.A. Baan ² and R.T. Schilizzi <sup>1

1</sup> Joint Institute for VLBI in Europe (JIVE), Postbus 2, 7990 AA, Dwingeloo, The Netherlands (garrett@jive.nl)
² Netherlands Foundation for Research in Astronomy (ASTRON/NFRA), Postbus 2, 7990 AA, Dwingeloo, The Netherlands
³ Dipartimento di Fisica dell Universita di Bologna, via Irnerio 46, 40126, Bologna, Italy
⁴ Kapteyn Astronomical Institute, Postbus 800, 9700 AV Groningen, The Netherlands

Received 3 July 2000 / Accepted 31 August 2000

Abstract

We present deep WSRT 1.4 GHz observations of the Hubble Deep Field region. At the level, the WSRT clearly detects 85 regions of radio emission in a field centred on the HDF. Eight of these regions fall within the HDF itself, four of these are sources that have not previously been detected at 1.4 GHz, although two of these are VLA detections at 8.5 GHz. The two new radio sources detected by the WSRT are identified with relatively bright () moderate redshift spiral and irregular type galaxies. In the full field, the WSRT detects 22 regions of emission that were not previously detected by the VLA at 1.4 GHz. At least two of these are associated with nearby, extended star-forming galaxies.

Key words: galaxies: starburst galaxies: active radio continuum: galaxies

Send offprint requests to: M.A. Garrett

SIMBAD Objects

Contents

• 1. Introduction
• 2. WSRT observations and data analysis
• 3. Radio sources in the central HDF region
  • 3.1. Detections in the HFF region
• 4. Conclusions
• Acknowledgements
• References

© European Southern Observatory (ESO) 2000

Online publication: October 10, 2000
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