All Questions
Tagged with binary-stars mass
6
questions
0
votes
2
answers
68
views
As a binary system start producing gravitational waves even before merge should the stars start losing mass while still orbiting each other?
As a binary system start producing gravitational waves even before merge should the stars start losing mass while still orbiting each other? But is this really difficult to understand as just orbiting ...
- 2,255
0
votes
2
answers
168
views
How do astronomers calculate the mass of celestial bodies light year from Earth?
I have read in many scientific stuff that mass of this planet or that stars is about '$n$' times the mass of Sun.
I have gone through many websites and videos on YouTube but didn't find the right ...
4
votes
3
answers
3k
views
Kepler's 3rd law applied to binary systems: How can the two orbits have different semi-major axes?
I suddenly came to the realization that I don't understand something about Kepler's law when applied to binary systems, because I encountered an apparent paradox. There must be an error somewhere in ...
- 830
1
vote
1
answer
3k
views
Mass of each star in a binary star system?
A binary star is composed of two stars that orbit around their centre of mass under the influence of gravity. Consider such a system in which two stars have identical mass. In the centre of mass frame,...
- 119
4
votes
2
answers
3k
views
Determining Mass of Spectroscopic Binaries
I know that the mass of a binary star system is given by Kepler's Law: $$\mathrm{m_1 + m_2 = \frac{4 \pi^2 r^3}{GT^2}}$$
Further we know that: $$\frac{r_2}{r_1} = \frac{v_2}{v_1} = \frac{m_1}{m_2}$$
...
- 203
16
votes
3
answers
41k
views
How do we determine the mass of a black hole?
Since by definition we cannot observe black holes directly, how do astronomers determine the mass of a black hole?
What observational techniques are there that would allow us to determine a black ...
grassman