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miskamm [114]
3 years ago
14

What evidence do we have that the halo population of stars are older than other stars in the galaxy?

Physics
1 answer:
weeeeeb [17]3 years ago
7 0

Answer:

a.They have a smaller proportion of heavy elements.

Explanation:

As a  star grows old , its metal content becomes low . Our sun is Population I star which means it is very new . Its metal content is 1.4 % . By the term metal we mean any element heavier than helium . Population II stars are older than population I stars . They will have lesser content of metal . Population III are oldest star group which have metal content as less as .015 % .

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Hydraulic engineers often use, as a unit of volume of water, the "acre-foot", defined as the volume of water that will cover 1 a
Alex17521 [72]

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3 years ago
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4 years ago
What does density have to do with heat?
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