SIMBAD references

Result. are presented for our search for warm-hot gas towards the quasar Q 0329-385. We identify ten Ovi systems of which two are within 5000 km/s of z_em and a third one should be of intrinsic origin. The seven remaining systems have Hi column densities 10^13.7≤N(HI)≤10^15.6cm^–2. At least ∼1/3 of the individual Ovi sub-systems have temperatures T<1x10⁵K and cannot originate in collisionally ionized gas. Photoionization by a hard UV background field reproduces well the ionic ratios for metallicities in the range 10^–2.5-10^–0.5 solar, with possibly sub-solar N/C relative abundance. For [O/C]=0, the sizes inferred for the Ovi clouds are in some cases larger than the maximum extent implied by the Hubble flow. This constraint is fulfilled assuming a moderate overabundance of oxygen relative to carbon. For a soft UV ionizing spectrum, an overabundance of O/C is required, [O/C]≃0.0-1.3. For a hard(soft) U spectrum and [O/C]=0(1), the Ovi regions have overdensities ρ/<ρ≥∼10-40.