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Results tagged with binary-star
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user 2153
Questions regarding a pair of stars that are gravitationally bound and orbit around their barycenter.
2
votes
Accepted
can we see all binary stars as pairs?
To answer the main part of your question: Yes, there do exist such systems. They're called visual binaries. We generally need a telescope to tell them apart. Most binary systems look like a single sta …
- 37.4k
2
votes
Accepted
Examples of Equal Mass, Unequal Mass and Double Binary Star Systems
Equal mass
Alpha Centauri, the nearest star system to us, is composed of a binary star and Proxima Centauri (making it a triple star system). Alpha Centauri A has a mass of 1.1 M$_{\odot}$, while Alph …
- 37.4k
7
votes
How many stars can stay close to each other without collapsing?
At least 7.
We currently know of two star systems with 7 stars: Nu Scorpii and AR Cassiopeiae. The two have different structures, both of which are complicated but appear to be stable on stellar times …
- 37.4k
15
votes
Accepted
Binaries consisting of a black hole and a non-black hole?
Black hole and main sequence star/giant star
We can observe binary systems containing a black hole by looking for emissions from accretion disks which may form when matter is transferred from the comp …
- 37.4k
3
votes
Interaction of stellar winds in binary star systems
Systems like this are known as colliding-wind binaries (CWBs), and they do produce some interesting effects. When winds collide, they create shocks, which in turn heats up gas. The most notable result …
- 37.4k
13
votes
How are binary star systems created?
There are two main theories for the formation of binary stars - one accepted, and one mainly deprecated.
The fission hypothesis. The fission hypothesis states that the binary system forms after the …
- 37.4k
8
votes
Accepted
Why is a giant planet around a tiny star unusual when binary stars are common?
It's important to realize that binary stars form much differently than planets do. Assuming that both stars form in situ (i.e. excluding scenarios where one is captured from outside the system), there …
- 37.4k
6
votes
Accepted
What exactly is "the rotating lighthouse model" in the context of a double pulsar?
It seems that the authors are just referring to the accepted model of a pulsar, i.e. a neutron star spinning and emitting beams of radiation at its poles. In that sense, the term is used here no diffe …
- 37.4k