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NGC 6231 Chandra X-Ray Point Source Catalog 2

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NASA Open Data Portal2025-06-14 收录
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https://data.nasa.gov/dataset/ngc-6231-chandra-x-ray-point-source-catalog-2
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NGC 6231 is a young cluster (age ~2-7 Myr) dominating the Sco OB1 association (distance ~1.59 kpc) with ~100 O and B stars and a large pre-main-sequence stellar population. The...
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