| 1. | Castor C is a variable star, classified as a BY Dra type.
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| 2. | They can also discover comets, and perform regular observations of variable stars.
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| 3. | She collaborated on variable star observations with Whitney from 1909 to 1911.
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| 4. | Chandler also made contributions to other areas of astronomy, including variable stars.
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| 5. | His published papers are primarily in regard to variable stars and photometry.
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| 6. | He is a member of the American Association of Variable Star Observers.
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| 7. | It was thought to be a variable star by astronomer Otto Struve.
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| 8. | The designation TW Piscis Austrini is astronomical nomenclature for a variable star.
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| 9. | ? Phoenicis is a spectroscopic binary and a small amplitude variable star.
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| 10. | This is a suspected variable star, although this variability remains unconfirmed.
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