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2001A&A...366..387L - Astronomy and Astrophysics, volume 366, 387-394 (2001/2-1)

Slit spectroscopy of nine new (z>3) southern QSOs: damped Lyα and Lyman-limit systems.


Abstract (from CDS):

We present FWHM=5 to 8Å optical spectra of nine previously unknown quasars (QSOs) drawn from the Calan/Tololo Survey. We have chosen this sample based on QSO redshift, z>3, and the presence of either candidate damped Lyα (DLA) or Lyman-limit (LL) systems in their spectra. The spectra show at least 9 DLA systems at redshifts 2.25<z<3.26, which are identified by the shape and strength of the HI-Lyα absorption line, by the presence of Lyβ and low-ionization metal lines at the same redshift, and - in most cases - by the observed Lyman-break. We thus provide the astronomical community with new interesting targets for high resolution spectroscopy on large telescopes. We describe all the spectra with emphasis on the most outstanding DLA and LL systems found.

Abstract Copyright:

Journal keyword(s): cosmology: observations - quasars: individual: CTQ 247, CTQ 298, CTQ 314, CTQ 325, CTQ 408, CTQ 460, CTQ 476, CTQ 1005, CTQ 1061 - quasars: general - absorption lines

Nomenclature: Table 1: CTQ NNNN (Nos 1005, 1061) added. Table 2: [LMM2001] QSO J0041-4936 abs N.NNNN N=16 = [LMM2001] CTQ 408 NN (Nos 1-20). Table 3: [LMM2001] QSO J0407-4410 abs N.NNNN N=22 = [LMM2001] CTQ 247 NN (Nos 1-27). Table 4: [LMM2001] QSO J1048-1637 abs N.NNNN N=2 = [LMM2001] CTQ 1061 N (Nos 1-2). Table 5: [LMM2001] QSO J0137-2707 abs N.NNNN N=5 = [LMM2001] CTQ 1005 N (Nos 1-5). Table 6: [LMM2001] QSO J1039-2313 abs N.NNNN N=10 = [LMM2001] CTQ 460 NN (Nos 1-10). Table 7: [LMM2001] QSO J1235-3050 abs N.NNNN N=7 = [LMM2001] CTQ 314 N (Nos 1-7). Table 8: [LMM2001] QSO J1456-1938 abs N.NNNN N=4 = [LMM2001] CTQ 476 N (Nos 1-5). Table 9: [LMM2001] QSO J1342-1355 abs N.NNNN N=3 = [LMM2001] CTQ 325 N (Nos 1-4). Table 10: [LMM2001] QSO J1113-1533 abs N.NNNN N=3 = [LMM2001] CTQ 298 N (Nos 1-3).

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