The broad line region in active nuclei and quasars - Correlations with luminosity and radio emission

Details The broad line region in active nuclei and quasars - Correlations with luminosity and radio emission The broad line region in active nuclei and quasars - Correlations with luminosity and radio emission

Aug 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980a%26a....88..311h&link_type=abstract

Astronomy and Astrophysics, vol. 88, no. 3, Aug. 1980, p. 311-316.

Astronomy and Astrophysics

Astronomy

13

Galactic Nuclei, Quasars, Radio Emission, Spectral Line Width, Stellar Luminosity, Balmer Series, Correlation, Infrared Astronomy, Line Spectra

Scientific paper

Using recently published infrared and optical continuum fluxes and emission line parameters, the luminosity dependence of the properties of the broad-line region (BLR) in active nuclei and quasars were explored and an attempt was made to find systematic differences between optical and radio-selected BLR's in terms of these luminosity dependences. It is found that most properties of the BLR are not strongly luminosity dependent, with the He II 4686 A/H-beta and Fe II/H-beta line ratios being two exceptions. Interpretation in terms of a 'softening' of the ionizing continuum with increasing luminosity is discussed. It is found that BLR's occurring in conjunction with extended and strong radio emission are peculiar in many ways. When such BLR's are in radio galaxies, they often have abnormally large H-alpha/H-beta, forbidden O III/H-alpha, weak He II 4686, and weak He I 5876. Along with quasars of the same radio class, they have weak Fe II emission and abnormally broad Balmer lines.

Affiliated with

Also associated with

No associations

Rating

The broad line region in active nuclei and quasars - Correlations with luminosity and radio emission 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 The broad line region in active nuclei and quasars - Correlations with luminosity and radio emission, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The broad line region in active nuclei and quasars - Correlations with luminosity and radio emission will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1273412