| 41. | 11 Com is a low metallicity star with an iron abundance about half that of the Sun.
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| 42. | Their low metallicity seems to serve as proof that HVCs do indeed bring in fresh gas.
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| 43. | The metallicity is the proportion of elements other than hydrogen or helium, as compared to the Sun.
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| 44. | Its extremely low metallicity indicates it is very old one of the oldest clusters in the Milky Way.
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| 45. | This immediately suggests that metallicity has evolved through the generations of stars by the process of stellar evolution.
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| 46. | The two most important stellar properties are mass and metallicity because it determines how these planetary systems form.
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| 47. | This strongly indicates that the low metallicity of the environment, rather than the crowding, is responsible.
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| 48. | NGC 2516 and the recently discovered nearby star cluster Mamajek 2 in Ophiuchus have similar age and metallicity.
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| 49. | "' HD 155358 "'is a low metallicity yellow dwarf star approximately 43 Hercules.
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| 50. | It has higher metallicity by 25 % and very similar stellar age of 4.6 billion years.
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