Collections
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Spitzer surveyed objects by miltonbosch (10 subjects)
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YSOc-class I/II by MichalBiesiada (10 subjects)
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YSO by joshua5 (10 subjects)
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known YSO by MichalBiesiada (10 subjects)
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DDOI by thisisjaid (10 subjects)
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YSOs by Pini2013 (10 subjects)
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S2 Stars with unknown spectral class. by artman40 (10 subjects)
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Young Stellar Objects by marca (10 subjects)