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Astron. Astrophys. 335, L77-L80 (1998)

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Letter to the Editor

Detection of candidate primordial galaxies at z > 4 *

V. Le Brun 1, J. Boulesteix 2, A. Mazure 1, P. Amram 2 and G. Courtès 2

1 IGRAP, Laboratoire d'Astronomie Spatiale du C.N.R.S., B.P. 8, F-13376 Marseille CEDEX 12, France (e-mail: lebrun@lasa13.astrsp-mrs.fr, mazure@astrsp-mrs.fr)
2 IGRAP, Observatoire de Marseille, 2 Place Le Verrier, F-13248 Marseille CEDEX 04, France (e-mail: boulesteix@obmara.cnrs-mrs.fr, amram@obmara.cnrs-mrs.fr)

Received 9 December 1997 / Accepted 31 March 1998

Abstract

We report on the detection of four primordial galaxies candidates in the redshift range [FORMULA], as well as 4 other candidates in the range [FORMULA]. These galaxies have been detected with the now common technique of the Lyman break, but with a very original instrumental setup, which allows the simultaneous detection on a single exposure of three narrow ([FORMULA] Å) bands. Depending on between which pair of bands the Lyman break is located, it thus allows to detect two ranges of redshifts. Two of the the higher redshift candidates are located only [FORMULA] kpc apart, thus forming a possible primordial galaxy pair.

Key words: cosmology: observations – galaxies: distances and redshifts, formation – instrumentation: miscellaneous

* Based on observations made with the ESO 3.6m Telescope

Send offprint requests to: V. Le Brun

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© European Southern Observatory (ESO) 1998

Online publication: June 26, 1998
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