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

doi:10.1046/j.1365-8711.1998.02150.x

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

Faculty of Computing, Engineering and Science

Research output: Contribution to journal › Article › peer-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 language	English
Pages (from-to)	L30-L32
Journal	Monthly Notices of the Royal Astronomical Society
Volume	301
Issue number	2
DOIs	https://doi.org/10.1046/j.1365-8711.1998.02150.x
Publication status	Published - 1 Dec 1998

Keywords

circumstellar matter
dust
extinction
globular clusters: individual: NGC 6356

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10.1046/j.1365-8711.1998.02150.xLicence: CC BY-NC-ND

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@article{66126d87f5b84011940f4ea88ddc9183,

title = "Dust in the core of the metal-rich globular cluster NGC 6356",

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 {\AA}). 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.",

keywords = "circumstellar matter, dust, extinction, globular clusters: individual: NGC 6356",

author = "Hopwood, {M. E. L.} and Penny, {A. J.} and Eyres, {S. P. S.} and A. Evans",

year = "1998",

month = dec,

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doi = "10.1046/j.1365-8711.1998.02150.x",

language = "English",

volume = "301",

pages = "L30--L32",

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TY - JOUR

T1 - Dust in the core of the metal-rich globular cluster NGC 6356

AU - Hopwood, M. E. L.

AU - Penny, A. J.

AU - Eyres, S. P. S.

AU - Evans, A.

PY - 1998/12/1

Y1 - 1998/12/1

N2 - 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.

AB - 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.

KW - circumstellar matter

KW - dust

KW - extinction

KW - globular clusters: individual: NGC 6356

U2 - 10.1046/j.1365-8711.1998.02150.x

DO - 10.1046/j.1365-8711.1998.02150.x

M3 - Article

SN - 0035-8711

VL - 301

SP - L30-L32

JO - Monthly Notices of the Royal Astronomical Society

JF - Monthly Notices of the Royal Astronomical Society

IS - 2

ER -

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

Abstract

Keywords

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