Silicate dust in the environment of rs ophiuchi following the 2006 eruption

A. Evans, C. E. Woodward, L. A. Helton, J. T H Van Loon, R. K. Barry, M. F. Bode, R. J. Davis, J. J. Drake, S. P S Eyres, T. R. Geballe, R. D. Gehrz, T. Kerr, J. Krautter, D. K. Lynch, J. U. Ness, T. J. O'Brien, J. P. Osborne, K. L. Page, R. J. Rudy, R. W. RussellG. Schwarz, Sumner Starrfield, V. H. Tyne

Research output: Contribution to journalArticlepeer-review

20 Scopus citations

Abstract

We present further Spitzer Space Telescope observations of the recurrent nova RS Ophiuchi, obtained over the period 208-430 days after the 2006 eruption. The later Spitzer 1RS data show that the line emission and free-free continuum emission reported earlier is declining, revealing incontrovertible evidence for the presence of silicate emission features at 9.7 and 18 μm. We conclude that the silicate dust survives the hard radiation impulse and shock blast wave from the eruption. The existence of the extant dust may have significant implications for understanding the propagation of shocks through the red giant wind and likely wind geometry.

Original languageEnglish (US)
Pages (from-to)L157-L160
JournalAstrophysical Journal
Volume671
Issue number2 PART 2
DOIs
StatePublished - 2007

Keywords

  • Binaries
  • Cataclysmic variables stars
  • Close -binaries
  • Individual (rs oph)
  • Stars -novae
  • Symbiotic -infrared

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

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