| 1. | Analysis of its spectrum reveals that it is a spectroscopic binary.
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| 2. | Each component of this double star is itself a spectroscopic binary.
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| 3. | It is a cool dwarf star and probably a spectroscopic binary.
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| 4. | Despite this, it is suspected of being a spectroscopic binary star.
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| 5. | It is a spectroscopic binary with an orbital period of 134 days.
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| 6. | It is a suspected variable and a suspected spectroscopic binary.
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| 7. | It is a spectroscopic binary with an orbital period of 437 days.
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| 8. | Component A1 was finally determined to be a spectroscopic binary.
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| 9. | This system is what astronomers term a double-lined spectroscopic binary.
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| 10. | ? Phoenicis is a spectroscopic binary and a small amplitude variable star.
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