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Centaurus A: VLT Views of the Nearest Giant Elliptical Galaxy

Astrophysics and space science(2004)

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摘要
VLT images in BVI are used to identify globular clusters in the central region of NGC5128. Based on the sizes, optical magnitudes and colors, a hundred candidate globular clusters are identified with projected galactocentric distances 1 kpc < R G < 5 kpc. These clusters have magnitudes 18 < V < 20.5 or −10.3 < M V < −7.8 at the distance of this galaxy, and colors 0.8 < V − I < 1.5 and 0.5 < B − V < 1.5. These identifications allow us to compare the properties of the X-ray globular cluster population discovered recently in this galaxy.
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关键词
Centaurus A: NGC5128,globular clusters,X-ray sources
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