Groombridge 34 is an M1 V star. Based on this information, which of the following are true I.Groombridge 34 has a surface temperature that is less than the Sun.
II.Groombridge 34 has a mass that is greater than that of the Sun.
III.Groombridge 34 is less luminous than the Sun.
IV.Groombridge 34 is located near the middle of the H-R diagram.

Question

Quizplus · Accepted Answer

M1 V stars are cooler and less luminous than the Sun. Therefore, statement I is true, but statement II is false. As the star is less luminous than the Sun, it should be located towards the bottom of the H-R diagram, so statement IV is false. Therefore, only statements I and III are true, making choice D the correct answer.

Groombridge 34 Is an M1 V Star