Physics, 08.08.2019 23:20 hannahdrumsey

Star x has lines of ionized helium in its spectrum, and star y has bands of titanium oxide. which is hotter? why? the spectrum of star z shows lines of ionized helium and also molecular bands of titanium oxide. what is strange about this spectrum? can you suggest an explanation?

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Star x has lines of ionized helium in its spectrum, and star y has bands of titanium oxide. which is...

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