The star named Sheat is of M2 II spectral type and luminosity class. Based on this information, which of the following are true
I.Sheat has a surface temperature less than the Sun.
II.Sheat has a diameter that is greater than that of the Sun.
III.Sheat is more luminous than the Sun.
IV.Sheat is located near the upper left-hand corner in the H-R diagram.

Question

The star named Sheat is of M2 II spectral type and luminosity class. Based on this information, which of the following are true
 I.Sheat has a surface temperature less than the Sun.
II.Sheat has a diameter that is greater than that of the Sun.
III.Sheat is more luminous than the Sun.
IV.Sheat is located near the upper left-hand corner in the H-R diagram.

Quizplus · Accepted Answer

Sheat, being an M2 II star, is a cool giant star with a lower surface temperature than the Sun (I), a larger diameter (II), and greater luminosity (III). However, it is not located near the upper left-hand corner of the H-R diagram, which is typically occupied by hot, luminous stars.

The Star Named Sheat Is of M2 II Spectral Type