*IMPORTANT NOTE: DO NOT make any stars' masses or stage of life answer. reference as a reason to the for your a) WOLF 28 and PROCYON have roughly the same surface temperature. Which star is smaller in diameter? (Explain which property of the star supports your reasoning. Review directions above.) b) BETELGEUSE and SANDULEAK have about the same luminosity. Which star is larger in diameter? (Explain which property of the star supports your reasoning. Review directions above.) c) VEGA and ZZ CETI have about the same temperature. Which star is smaller in diameter? (Explain which property of the star supports your reasoning. Review directions above.) d) Which star would appear more reddish MIRA or REGULUS? (Explain which property of the Star supports your reasoning. Review directions Above.)

*IMPORTANT NOTE: DO NOT make any stars' masses or stage of life answer. reference as a reason to the for your a) WOLF 28 and PROCYON have roughly the same surface temperature. Which star is smaller in diameter? (Explain which property of the star supports your reasoning. Review directions above.) b) BETELGEUSE and SANDULEAK have about the same luminosity. Which star is larger in diameter? (Explain which property of the star supports your reasoning. Review directions above.) c) VEGA and ZZ CETI have about the same temperature. Which star is smaller in diameter? (Explain which property of the star supports your reasoning. Review directions above.) d) Which star would appear more reddish MIRA or REGULUS? (Explain which property of the Star supports your reasoning. Review directions Above.)

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Give ALL correct answers referring to the properties of known stars, i.e., B, AC, BCD... A) On the main sequence, more massive stars are colder. B) High mass stars are the most numerous type of stars observed in the galaxy. C) Giants are colder than main sequence stars at the same luminosity. D) Giants are brighter than dwarfs at the same temperature. E) On the main sequence, more massive stars are dimmer. F) White dwarf stars are much denser than main sequence stars. Hint: White dwarf stars have about the mass of our sun, but are only the size of the Earth. Therefore, they have a very high density.
Please count this as 4 questions if possible. I want this fully answered on one response please.
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Pls help ASAP. Pls show all work.
Match each statement with the appropriate item (if the first corresponds to B and the next 4 to C, enter BCCCC) 1) group of stars that was formed all at the same time, with the same composition 2) the top of the main sequence of a cluster; more massive stars in the cluster have already evolved 3) globular clusters stars that are burning helium in their core 4) young, spread out star cluster 5) old, dense star cluster A. main sequence turnoff B. open cluster C. star cluster D. horizontal branch stars E. globular cluster
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(Answer don't copy with hand written please)As a star runs out of hydrogen to fuel nuclear fusion in its core, changes within the star usually cause it to leave the main sequence, expanding and cooling as it does so. Would a star with a radius 12 times that of the Sun, but a surface temperature 0.5 times that of the Sun, be more, or less luminous than the Sun? Show and explain your reasoning. You may assume the surface area of a sphere is A = 4πr2.