Astronomy and Astrophysics – Astrophysics
Scientific paper
Apr 1988
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988apj...327..103b&link_type=abstract
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 327, April 1, 1988, p. 103-115.
Astronomy and Astrophysics
Astrophysics
50
Abundance, Emission Spectra, Gravitational Lenses, Line Spectra, Quasars, Seyfert Galaxies, Elliptical Galaxies, Radio Galaxies, Red Shift, Stellar Luminosity
Scientific paper
Observations of two new high-redshift, narrow-lined QSOs (NLQSOs) are presented and discussed together with observations of similar objects reported in the literature. Gravitational lensing is ruled out as a possible means of amplifying the luminosity for one of these objects. It is found that the NLQSOs have broad bases on their emission lines as well as the prominent narrow cores which define this class. Thus, these are not 'pole-on' QSOs. The FWHM of the emission lines fits onto the smoothly falling tail of the lower end of the line-width distribution for complete QSO samples. The equivalent widths of the combined broad and narrow components of the lines are normal for QSOs of the luminosity range under study. However, the NLQSOs do show ionization differences from broader-lined QSOs; most significant, the semiforbidden C III/C IV intensity ratio is unusually low. The N/C abundance ratio in these objects is found to be normal; the Al/C abundance ratio may be quite high.
Baldwin John A.
Hazard Cyril
McMahon Richard
Williams Robert E.
No associations
LandOfFree
QSOs with narrow emission lines does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with QSOs with narrow emission lines, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and QSOs with narrow emission lines will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-847888