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ity of the 20 Mo star Sirius predicted by the mass-luminosity equation (Unit 58). Its observed luminosity is about 20 LO How can you explain the difference? The mass-luminosity relationship predicts that Sirius is about Siriuss higher luminosity is a result of its higher Suns. Themassluninosit reSisis a times more luminous than the Sun. surface temperature and lrger surface area compared to the
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MO Lo Me Cosmect AsL charge with ib m And hwfs 1-y 9 2 8for ohservd bem main LM)

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