| 41. | Delta Scuti variables are found roughly where the classical instability strip intersects the main sequence.
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| 42. | Zeta Gem B appears as an F4 main sequence star and is a spectroscopic binary.
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| 43. | It has a much fainter A8 main sequence companion.
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| 44. | O class main sequence stars are already highly luminous.
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| 45. | Delta Scuti stars are located at the intersection of the strip with the main sequence.
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| 46. | The star is then on the main sequence.
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| 47. | The other beaten horses included Taghrooda, Main Sequence.
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| 48. | Both components are blue-white main sequence dwarfs.
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| 49. | Both stars are F-type main sequence stars.
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| 50. | Xi Tauri is a main sequence dwarfs.
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