A Search for Intracluster Dust of Globular Clusters

Astronomy and Astrophysics – Astronomy

Scientific paper

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Scientific paper

We report far-IR observations with AKARI to search for intracluster dust (ICD, hereafter) from globular clusters. We observed 12 clusters and detected both diffuse and point-like sources through our Mission Program (MP) survey. However, it is found that most of them are not associated with clusters, leaving one possible candidate of ICD cloud (Matsunaga et al. 2008). We also searched the β-1 Bright Source Catalogue of the AKARI All-Sky Survey for ICD but no likely candidate was found. This paucity suggests that the dust disappears within a lifetime shorter than 5-50 Myr depending on the dust temperature.

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