All Questions
Tagged with binary-stars astronomy
17
questions
0
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3
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90
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How line of sight is determined?
How do they calculate the line of sight of a galaxy or binary star system from an observer's point of view. the velocity of a star in a binary star system depends on the line of sight so how do they ...
0
votes
1
answer
139
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Temperature estimate from eclipsing binary
So assuming perfect edge on eclipsing binary, we can estimate the temperature ratio of the two stars because the "blocked area" is the same, and thus the amount of light "dimmed" ...
- 161
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1
answer
36
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Are there any binary red supergiants?
I wonder if we ever have identified or observed a pair of binary stars (red supergiants).
And I also wonder what would happen if they exploded, (theoretically) as we havent observed it. Also, would ...
- 111
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2
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168
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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 ...
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1
answer
52
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How would I see if there is a transit in this light curve?
I am trying to detect if some binary star systems have exoplanets orbiting them. I've been completing this project for many weeks now, and have managed to write some code that will plot light curves ...
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1
answer
1k
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Relationships between G magnitude, Johnson V magnitude, and spectral type of stars?
I'm simulating a population of binary stars for a summer research project. I'm adding uncertainties to my simulated observables such as angular position and radial (line of sight) velocity. I'm using ...
- 109
2
votes
2
answers
108
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Angular momentum orientation of the orbits of the two stars with respect to the Solar System
Happen to see this in Wiki...
The astronomer Karl Schwarzschild observed the motion of pairs of stars orbiting each other. He found that the two orbits of the stars of such a system lie in a plane, ...
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1
answer
72
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Definition of eclipsing binaries?
In the second minimum (the 3rd step) there is a smaller decrease in light intensity. For this to happen, wouldn't you need to be looking at the plane of orbit from above rather than directly along the ...
- 799
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1
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53
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Discerning binary stars
What is the minimum magnification that one would need to discern a pair of binary stars if viewed from Earth? Are there factors other than magnification that matter? If so, why?
- 87
1
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1
answer
94
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Are there any black hole neutron star binary?
Has a black hole-neutron star binary aver been observed?
I mean observed in any way: gravitationally, through eclipse, or any other means.
EDIT Thanks to the comment to this question, we know that ...
- 1,335
2
votes
2
answers
84
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Hulse-Taylor binary data gap in the nineties
I was wondering what is the reason there are no data points in the famous Hulse-Taylor plot of the period decay in the 1990s.
Does anyone know why no one collected data during this period?
- 1,203
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answer
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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
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2
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3k
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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
3
votes
1
answer
332
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Why do we assert Hulse–Taylor binary system's orbital decay to gravitational waves and not radiation?
From this link
The Hulse–Taylor system's orbit has decayed since the binary system
was initially discovered, in precise agreement with the loss of energy
due to gravitational waves. The ratio ...
- 1,928
1
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2
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Data for binary systems
I am looking for binary systems data that can be used in the context of Kepler's laws. Masses, distances, periods, etc.