Abstract
view Abstract Citations (89) References (40) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS The Emission-Line Regions in Broad Absorption Line Quasars Hartig, G. F. ; Baldwin, J. A. Abstract The properties of the emission-line regions in 16 broad absorption line (BAL) quasars are compared to those of non-BAL quasars. It is found that about half the BAL quasars, those having detached BALs, are significantly different from the comparison samples of normal quasars. They have large Al III/semiforbidden C III intensity ratios, strong Fe II emission, and unusually weak C IV emission lines whose profiles do not agree well with those of the lower ionization emission lines. New spectra of the Mg II 2798 A region in 13 of these BAL quasars show a few cases of possible weak Mg II BAL absorption, but no unambiguously strong cases. Thus, it is concluded that strong BAL absorption in Mg II is rare. The quasar H0335 -336 has very narrow emission lines (1000 km/s), and thus may offer a rare opportunity to measure many weak or normally blended emission lines which can give information about physical conditions in the emission-line gas. Publication: The Astrophysical Journal Pub Date: March 1986 DOI: 10.1086/163974 Bibcode: 1986ApJ...302...64H Keywords: Astronomical Spectroscopy; Emission Spectra; Quasars; Spectral Energy Distribution; Spectral Line Width; Abundance; Aluminum; Carbon; Iron; Spectrum Analysis; Astrophysics; QUASARS full text sources ADS | data products SIMBAD (18) NED (17)
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