AAS Meeting #193 - Austin, Texas, January 1999
Session 75. Hubble Deep Field South and North
Display, Friday, January 8, 1999, 9:20am-6:30pm, Exhibit Hall 1

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[75.02] The Hubble Deep Field South: UV Spectroscopy of QSO J2233-606

H. C. Ferguson, S. A. Baum, I. Busko, B. R. Espey, A. Gonnella, J. Hayes, P. Hodge, C. L. Martin, K.C. Sahu, S. Savaglio, E. Smith, R. Williams, J. Wilson (STScI), T.M. Brown, J.P. Gardner (GSFC), C. M. Carollo, M.E Kaiser (JHU)

QSO J2233-606 was observed with the Space Telescope Imaging Spectrograph during the HDF-South campaign. The spectroscopic observations covered wavelengths from 1150 to 3560 {Å} at a range of resolutions. The QSO spectrum is attenuated by a Lyman-limit absorption line system at z ~1.9, but the flux recovers in the far-UV. Most of the spectroscopic observing time (155 ks) was devoted to obtaining observations with the medium-resolution echelle grating at a resolution of 10 km/s. The spectra show a rich forest of absorption lines, some arising from Lyman \alpha in the redshift range 1.2 to 1.5, and others from higher order Lyman series lines of higher-redshift systems. At shorter wavelengths, some strong absorption line systems are seen at the 250-400 km/s resolution with the low-resolution gratings. The higher-redshift Lyman alpha forest is detected at 50 km/s resolution in the 3100-3560 {Å} region.

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