Some Inferences from Spectrophotometry of Quasi-Stellar Sources

Limits are placed on the amount of neutral and ionized hydrogen gas that can be in the vicinity of 4C OS 34 (and three other QSSs); these results place severe restraints on models of quasi-stellar radio sources in which the QSS phenomenon is supposed to occur within a galaxy A limit on the electron temperature is also established (1 x 10 < < 2 X 10 K) The relative abundance of C++ to C+++ is determined approximately in five QSSs, and the ratio of helium to hydrogen is estimated for fourteen QSSs.