Dust in the core of the metal-rich globular cluster NGC6356

Details Dust in the core of the metal-rich globular cluster NGC6356 Dust in the core of the metal-rich globular cluster NGC6356

Dec 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998mnras.301l..30h&link_type=abstract

Monthly Notices of the Royal Astronomical Society, Volume 301, Issue 2, pp. L30-L32.

Astronomy and Astrophysics

Astronomy

15

Circumstellar Matter, Dust, Extinction, Globular Clusters: Individual: Ngc6356

Scientific paper

We report the 3.5sigma detection of dust in the core of the metal-rich ([Fe/H] = -0.4) globular cluster NGC6356. The dust mass in the core is ~ 4-17x10^-3Msolar, depending on the dust equilibrium temperature. We rule out sputtering as a grain destruction mechanism in NGC6356, unless grains are very small (~30Angstroms). We also place the upper limit of 6.6x10^-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.

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