Solid-phase C60 in the peculiar binary XX Oph

A. Evans, J. Th van Loon, C. E. Woodward, R. D. Gehrz, G. C. Clayton, L. A. Helton, M. T. Rushton, S. P.S. Eyres, J. Krautter, S. Starrfield, R. M. Wagner

Research output: Contribution to journalLetter

17 Scopus citations


We present infrared spectra of the binary XX Oph obtained with the Infrared Spectrograph on the Spitzer Space Telescope. The data show some evidence for the presence of solid C60 - the first detection of C60 in the solid phase - together with the well-known 'unidentified infrared' emission features. We suggest that, in the case of XX Oph, the C60 is located close to the hot component, and that in general it is preferentially excited by stars having effective temperatures in the range 15 000-30 000 K. C60 may be common in circumstellar environments, but unnoticed in the absence of a suitable exciting source.

Original languageEnglish (US)
Pages (from-to)L92-L96
JournalMonthly Notices of the Royal Astronomical Society: Letters
Issue number1
StatePublished - Mar 2012


  • Astrochemistry
  • Binaries: symbiotic
  • Circumstellar matter
  • Infrared: stars
  • Stars: individual
  • XX Oph

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    Evans, A., van Loon, J. T., Woodward, C. E., Gehrz, R. D., Clayton, G. C., Helton, L. A., Rushton, M. T., Eyres, S. P. S., Krautter, J., Starrfield, S., & Wagner, R. M. (2012). Solid-phase C60 in the peculiar binary XX Oph. Monthly Notices of the Royal Astronomical Society: Letters, 421(1), L92-L96.