Abstract
view Abstract Citations (19) References (16) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS The Lyman limit absorption system in the spectrum of PKS 2126-158 : heavy-element abundance at high redshift. Sargent, Wallace L. W. ; Steidel, Charles C. ; Boksenberg, A. Abstract The heavy element composition of a Lyman limit absorption system at z(abs) = 2.9676 in the spectrum of PKS 2126 - 158 is studied. Early observations had suggested that this absorption system had no detectable lines of heavy elements. However, new observations reveal weak associated lines due to C IV and C II. Photoionization models show that the system has a C/H abundance ratio = -2.3 + or - 0.2 and an Si/H abundance ratio less than -2.3. The possibility that the z(abs) = 2.9676 system in PKS 2126 - 158 is produced in galactic halo material or by primitive gas-rich dwarf galaxies is discussed. Publication: The Astrophysical Journal Pub Date: March 1990 DOI: 10.1086/168472 Bibcode: 1990ApJ...351..364S Keywords: Heavy Elements; Lyman Spectra; Quasars; Red Shift; Abundance; Cosmology; Galactic Structure; Astrophysics full text sources ADS | data products NED (11) SIMBAD (2)
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