Stars - Stellar Remnants

Question 1

Name the 4 Stellar Remnants

Answer 1

• Brown Dwarfs
• White Dwarfs
• Neutron Stars
• Black Holes

Question 2

Stellar Remnant Mass:
< 0.08 M⊙ (5)

Answer 2

• Brown Dwarf
• Can’t fuse Hydrogen (Too cool)
• Some Deuterium fusion
• Discovered similar to exoplanets
• Rare

Question 3

Stellar Remnant Mass:
0.08 M⊙ < M < 0.8 M⊙ (5)

Answer 3

• Majority of stars in this range
• H Fusion
• Low luminosity
• Time in main sequence longer than age of universe
• Evolve into white dwarfs

Question 4

Stellar Remnant Mass:
0.8 M⊙ < M < ~5 M⊙ (3)

Answer 4

• H Fusion
• Lifecyle of the Sun
• Evolve into white dwarf, C/O core

Question 5

Stellar Remnant Mass:
~5 M⊙ < M < 25 M⊙

Answer 5

• Evolve into neutron stars

Question 6

Stellar Remnant Mass:
~25 M⊙ < M

Answer 6

• Evolve into black hole