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The Seyfert Galaxy Mrk 335 is known for its frequent changes of flux andspectral shape in the X-ray band occurred during recent years. These variationsmay be explained by the onset of a wind that previous, non-contemporaneoushigh-resolution spectroscopy in X-ray and UV bands located at accretion discscale. A simultaneous new campaign by XMM-Newton and HST caught the source atan historical low flux in the X-ray band. The soft X-ray spectrum is dominatedby prominent emission features, and by the effect of a strong ionized absorberwith an outflow velocity of 5-6X10$^3$~km~s$^{-1}$. The broadband spectrumobtained by the EPIC-pn camera reveals the presence of an additional layer ofabsorption by gas at moderate ionization covering 80% of the central source,and tantalizing evidence for absorption in the Fe~K band outflowing at the samevelocity of the soft X-ray absorber. The HST-COS spectra confirm thesimultaneous presence of broad absorption troughs in CIV, Ly alpha, Ly beta andOVI, with velocities of the order of 5000 km~s$^{-1}$ and covering factors inthe range of 20-30%. Comparison of the ionic column densities and of otheroutflow parameters in the two bands show that the X-ray and UV absorbers arelikely originated by the same gas. The resulting picture from this latestmulti-wavelength campaign confirms that Mrk 335 undergoes the effect of apatchy, medium-velocity outflowing gas in a wide range of ionization statesthat seem to be persistently obscuring the nuclear continuum.

The XMM-Newton/HST view of the obscuring outflow in the Seyfert Galaxy Mrk 335 observed at extremely low X-ray flux