Class: youngStellarObject
http://www.astro.umd.edu/~eshaya/astro-ont/owl/astronomy.owl#youngStellarObject
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star
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youngStar
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preMainSequenceStar
- youngStellarObject
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preMainSequenceStar
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youngStar
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Thing
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nonMainSequenceStar
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preMainSequenceStar
- youngStellarObject
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preMainSequenceStar
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nonMainSequenceStar
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populationIStar
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youngStar
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preMainSequenceStar
- youngStellarObject
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preMainSequenceStar
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youngStar