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The intermediate age globular cluster NGC 152 in the Small Magellanic Cloud

P. W. Hodge

Open publisher page 11 citations

Abstract

The color-magnitude diagram of the populous Small Magellanic Cloud cluster NGC 152, measured to V approximately equal to 22, shows that it has an age of about 8 x 10 to the 8th years and is moderately metals-deficient. Its giant branch is sparsely populated, but includes at least two carbon stars at very red colors. There is a richly populated clump of intermediate-color giants at MV approximately 0. Several superluminous giants are detected, also at intermediate colors, but averaging MV approximately -2.0. The C-M diagram for the nearby field has very similar properties to those of the cluster.

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What this paper is about

The color-magnitude diagram of the populous Small Magellanic Cloud cluster NGC 152, measured to V approximately equal to 22, shows that it has an age of about 8 x 10 to the 8th years and is moderately metals-deficient. Its giant branch is sparsely populated, but includes at least two carbon stars at very red colors. There is a richly populated clump of intermediate-color giants at MV approximately 0. Several superluminous giants are detected, also at intermediate colors, but averaging MV approximately -2.0. The C-M diagram for the nearby field has very similar properties to those of the cluster.

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Available abstract

The color-magnitude diagram of the populous Small Magellanic Cloud cluster NGC 152, measured to V approximately equal to 22, shows that it has an age of about 8 x 10 to the 8th years and is moderately metals-deficient. Its giant branch is sparsely populated, but includes at least two carbon stars at very red colors. There is a richly populated clump of intermediate-color giants at MV approximately 0. Several superluminous giants are detected, also at intermediate colors, but averaging MV approximately -2.0. The C-M diagram for the nearby field has very similar properties to those of the cluster.

Key concepts: Physics, Globular cluster, Astrophysics, Small Magellanic Cloud, Astronomy, Horizontal branch, Large Magellanic Cloud, Stars

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