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We present further Spitzer Space Telescope observations of the recurrent novaRS Ophiuchi, obtained over the period 208-430 days after the 2006 eruption. Thelater Spitzer IRS data show that the line emission and free-free continuumemission reported earlier is declining, revealing incontrovertible evidence forthe presence of silicate emission features at 9.7 and 18microns. We concludethat the silicate dust survives the hard radiation impulse and shock blast wavefrom the eruption. The existence of the extant dust may have significantimplications for understanding the propagation of shocks through the red giantwind and likely wind geometry.

Silicate dust in the environment of RS Ophiuchi following the 2006 eruption