Dust in the core of the metal-rich globular cluster NGC 6356

M. E. L. Hopwood, A. J. Penny, S. P. S. Eyres, A. Evans

Research output: Contribution to journalArticlepeer-review

Abstract

We report the 3.5σ detection of dust in the core of the metal-rich ([Fe/H] =−0.4) globular cluster NGC 6356. The dust mass in the core is ∼ 4–17 × 10−3 M⊙, depending on the dust equilibrium temperature. We rule out sputtering as a grain destruction mechanism in NGC 6356, unless grains are very small (∼30 Å). We also place the upper limit of 6.6 × 10−3 on the CO-to-dust ratio in this cluster. This value is significantly smaller than the CO-to-dust ratio in the general Galactic interstellar medium, and in the outflows of evolved stars.

Original languageEnglish
Pages (from-to)L30-L32
JournalMonthly Notices of the Royal Astronomical Society
Volume301
Issue number2
DOIs
Publication statusPublished - 1 Dec 1998

Keywords

  • circumstellar matter
  • dust
  • extinction
  • globular clusters: individual: NGC 6356

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