All Questions
Tagged with white-dwarf temperature
4 questions
7
votes
1
answer
200
views
Exactly how long does it take for the exposed core of a star to cool from its starting temperature (several billion K) to ~50,000 K?
OK, I didn't know how I should word this question. But the basic point is that most white dwarfs that we have classified fall in temperature ranges from ~50,000 K to 6000 K. However, at the end of a ...
- 6,733
3
votes
1
answer
355
views
What is the coolest white dwarf known?
Okay, so in this ArXiv report from 2014, scientists discovered the coolest white dwarf, with a temperature of below 3000 K. However, as this report was from over 6 years ago, I think this information ...
- 6,733
3
votes
2
answers
2k
views
Gaia Gbp - Grp: why does it get larger as star gets redder?
As an enthusiastic amateur scientist, I'm plowing my way through a cool Gaia DR2-based paper, "An Empirical Measurement of the Initial-Final Mass Relation with Gaia White Dwarfs". I'm doing all right, ...
- 507
13
votes
2
answers
2k
views
How do stellar temperatures vary?
The temperature of the surface of the Sun (photosphere) is between 4500° - 6000° Kelvin. Inside the core, it's around 15.7 million degrees Kelvin.
In other types of stars (neutron stars, white ...
- 2,278