| 41. | It has sometimes been classified as a main sequence star and sometimes as a giant star.
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| 42. | Main sequence stars of spectral types A through K are believed to evolve into red giants.
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| 43. | It is a main sequence star with about 95 % of the mass of the Sun.
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| 44. | This has caused the star to expand and become hotter than a comparable main sequence star.
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| 45. | Thuban is not a main sequence star; it has now ceased hydrogen fusion in its core.
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| 46. | This means that hot supergiants lie on a relatively narrow band above bright main sequence stars.
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| 47. | ? Velorum is associated with several hundred pre main sequence stars within less than a degree.
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| 48. | Both stars are F-type main sequence stars.
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| 49. | Blue and white supergiants are high luminosity stars somewhat cooler than the most luminous main sequence stars.
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| 50. | Is blue supergiant a main sequence star?
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