Abstract
view Abstract Citations (113) References (36) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Hydrogen line and continuum emission in quasars. Kwan, J. ; Krolik, J. H. Abstract Combined photoionization and hydrogen excited-state population equilibrium models are calculated for QSO emission-line clouds. Ionization from excited states increases the ionized column density to several times more than that calculated on the basis of ground-state ionization alone. In the region where L-alpha is thermalized Balmer lines provide the main cooling. Integrated over the cloud, the ratios L-alpha/H-alpha and H-alpha/H-beta are 2 and 4.7, respectively. The Balmer continuum emission is also substantially increased by the inclusion of excited-state ionization. Publication: The Astrophysical Journal Pub Date: November 1979 DOI: 10.1086/183083 Bibcode: 1979ApJ...233L..91K Keywords: Astronomical Spectroscopy; Continuous Spectra; Hydrogen Clouds; Line Spectra; Quasars; Balmer Series; Emission Spectra; Lyman Alpha Radiation; Photoionization; Astrophysics; Line Formation:Quasars full text sources ADS |
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
