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We present a sample of 8 nearby Seyfert 2 galaxies observed by HST andChandra. All of the sources present soft X-ray emission which is coincident inextension and overall morphology with the [OIII] emission. The spectralanalysis reveals that the soft X-ray emission of all the objects is likely tobe dominated by a photoionized gas. This is strongly supported by the 190 kscombined XMM-Newton/RGS spectrum of Mrk3, which different diagnostic toolsconfirm as being produced in a gas in photoionization equilibrium with animportant contribution from resonant scattering. We tested with the code CLOUDYa simple scenario where the same gas photoionized by the nuclear continuumproduces both the soft X-ray and the [OIII] emission. Solutions satisfying theobserved ratio between the two components exist, and require the density todecrease with radius roughly like $r^{-2}$, similarly to what often found forthe Narrow Line Region.Comment: 14 pages, accepted for publication in A&

The soft X-ray/NLR connection: a single photoionized medium?