Photoionized OVI absorbers toward the bright QSO HE 0515-4414

S.A. Levshakov, I.I. Agafonova
Ioffe Physico-Technical Institute, St.-Petersburg, Russia
D. Reimers, R. Baade
Hamburger Sternwarte, Universitaet Hamburg, Germany

Detailed Monte Carlo inversion analysis of five OVI systems from the spectrum of the bright quasar HE 0515-4414 is reported. The results obtained show that the fraction of the predicted by the CDM cosmological models shock-heated hot gas with temperature T > 10^5 K is negligible in the analyzed OVI absorbers ranging from z = 1.4 to 1.7, and that their ionization states can be maintained by photoionization only.

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