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Astro Ass 4 - where stars are normally created therefore...

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i) The presence of lithium in the T Tauri indicates that it is young because lithium is usually destroyed as the star reaches its main sequence stage of life. ii) iii) The vary in the brightness of the stars is due to them being surrounded by dark clouds
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Unformatted text preview: where stars are normally created, therefore leading us to believe they are still young. http://www.aavso.org/vstar/vsots/0201.shtml...
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