Question

Listed following is a set of statements describing individual stars or characteristics of stars. Match these to the appropriate object category.
a. Red giant or supergiant
b. Main sequence stars
c. White dwarfs

1. The majority of stars in our galaxy
2. very cool but very luminous
3. not much larger in radius than Earth
4. very hot but very dim
5. the Sun, for example
6. found in the upper right of the H-R diagram
7. a very hot and very luminous star

Answer 1

Answer:

• 1. The majority of stars in our galaxy    --  B
• 2. very cool but very luminous    --  A
• 3. not much larger in radius than Earth    ----  C.
• 4. very hot but very dim   ----  C
• 5. the Sun, for example    ---  B
• 6. found in the upper right of the H-R diagram    --  A
• 7. a very hot and very luminous star    ---  B

Explanation:

• The red giant is a luminous star with a mass in the late period of its stellar evolution and as the outer atmosphere inflated and is tenuous and maks the radius much larger and the temperature up to the 5000k.

• While the main sequence is the continuous and a distinctive and is a continuous band of the stars appears in the stellar colors and the brightness. The majority of the stars in the galaxy are formed by these stars and the sun is an example.

• While the white dwarf is degenerated and is composed of the hot and the dim stars these have a high density and mass.