Inference of the extreme-ultraviolet continuum shape of quasars

Details Inference of the extreme-ultraviolet continuum shape of quasars Inference of the extreme-ultraviolet continuum shape of quasars

Dec 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991apj...382l..55z&link_type=abstract

Astrophysical Journal, Part 2 - Letters (ISSN 0004-637X), vol. 382, Dec. 1, 1991, p. L55-L57.

Other

8

Active Galactic Nuclei, Continuous Radiation, Emission Spectra, Extreme Ultraviolet Radiation, Quasars, Ultraviolet Spectra, Carbon, Iue, Lyman Alpha Radiation, Seyfert Galaxies, Silicon

Scientific paper

The strengths of C IV emission in weak-bump QSOs is significantly larger than that in strong-bump QSOs. Equivalent widths of Ly-alpha Si IV, and C III show no sign of difference between objects with various UV bump strength. The finding suggests that the 'big UV bump' is a source of ionization and can be scaled by emission lines. The higher average C IV EW and C IV/Ly -alpha ratio in weak-bump QSOs represent the values intrinsic to the bare nonthermal continuum. If the bump has a turnover between 30 and 50 eV, C IV emission would not respond as effectively as other low-ionization lines, leading to the observed correlation between C IV equivalent width and bump strength. The Baldwin effect can be explained in terms of UV bumps which are stronger at higher luminosity.

Affiliated with

Also associated with

No associations

Rating

Inference of the extreme-ultraviolet continuum shape of quasars 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 Inference of the extreme-ultraviolet continuum shape of quasars, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Inference of the extreme-ultraviolet continuum shape of quasars will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1536653