Letter to the Editor
Identification of absorbing galaxies towards the QSO J2233-606 in the Hubble Deep Field South *
Laurence Tresse 1,2,8,
Michel Dennefeld 1,3,
Patrick Petitjean 1,4,
Stefano Cristiani 5,6 and
Simon White 7
Received 8 December 1998 / Accepted 10 May 1999
We present spectroscopic observations of galaxies lying within 1´ of QSO J2233-606 in the Hubble Deep Field South (HDF-S). Several are found to be coincident in redshift with absorption-line systems seen in the HST J2233-606 spectrum. We detect a new QSO with at a projected angular separation of 44.5" (or kpc; ) from J2233-606. This QSO pair is an ideal target for QSO environment studies. Indeed, strong H I Ly and Ly absorptions are seen at in the J2233-606 spectrum. The bright spiral galaxy (J2233378-603324), projected at 4.7" from J2233-606, is at (thus kpc). Absorption is seen in the Lyman series at the same redshift but the weakness of the Lyman break implies N(H I) cm-2.
Key words: galaxies: halos galaxies: ISM galaxies: quasars: absorption lines galaxies: quasars: individual: J2233 606
* Based on observations obtained with the NTT at the European Southern Observatory, La Silla, Chile under programs 61.A-0631 and 62.O-0363; and with the NASA/ESA Hubble Space Telescope by the Space Telescope Science Institute, which is operated by AURA, Inc., under NASA contract NAS 5-26555.
Send offprint requests to: L. Tresse
© European Southern Observatory (ESO) 1999
Online publication: May 21, 1999