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Radio observation of the ESP Survey

Involved people at OAB: de Ruiter.

The whole square degree region of the ESO Slice Project was observed at 20 cm with the Australia Telescope Compact Array, using the mosaicing technique (Prandoni, de Ruiter et al. 2000, Papers I and II accepted by A&A). The resulting radio catalogue (ATESP) contains about 3000 radio sources down to a 20 cm flux limit of mJy. The radio data are now being used for various purposes: i) determining the radio properties of ESP galaxies (e.g. radio luminosity function of various types of galaxies), ii) deep radio source counts and optical identification of ATESP sources, iii) detailed optical studies of smaller selected areas: at present a sample of almost 70 objects, complete down to has been observed at ESO, and spectroscopic data are available for all objects. It is planned to extend the spectroscopy to much fainter magnitudes in the near future, using the VLT.