Some Models of the Emission-Line Region of 3c 273
Abstract
Models for the emission-line region of 3C 273 are derived by using ionization distributions calculated with extrapolated forms of the observed photon flux. The calculated ionization distributions, which are different from those assumed by previous workers, are used to make estimates of the relative abundances of H, He, 0, Ne, Mg, and Fe Estimates are also given of the physical parameters that characterize the emission-line region
- Publication:
-
The Astrophysical Journal
- Pub Date:
- March 1969
- DOI:
- 10.1086/149935
- Bibcode:
- 1969ApJ...155.1077B