Questions tagged [multiple-star-systems]

The tag has no usage guidance.

Filter by
Sorted by
Tagged with
1
vote
2answers
61 views

Is it correct to say that only binary and solitary star systems are stable?

Recently it has been shown that a large number of binary stellar systems exist. It seems to me that the orbits of stars in systems containing three or more stars will inevitably be chaotic, resulting ...
2
votes
0answers
21 views

Relation between inner and outer eccentricities in a hierarchical triple star system

According to Table 3 of Sterzik & Tokovinin (2002), the inner eccentricity of a triple star system (i.e. the eccentricity of the inner binary) is, most of the times (70%), larger than the outer ...
3
votes
1answer
48 views

Origin as binaries and multiple system

The majority of hot stars originate as binaries or multiple systems. How is it with the cooler spectral types? Are they usually born as single stars?
4
votes
1answer
44 views

Is a double quasi-binary system valid?

I was messing around with 4-body problems, and discovered a system where a close binary and a regular binary pair orbit each other. The regular binary gets disrupted every few orbits and one star ...
1
vote
1answer
62 views

Is there any planet or black hole where we could experience time dilation like in the movie Interstellar?

As we seen in Interstellar movie Copper goes to a planet where he experienced time dilation which was 1 hour of staying on that planet will cost the 7 years on the earth. So, is there any planet or ...
1
vote
2answers
43 views

Naming convention for multiple star systems

Okay, so I've seen different notations for the stars in β Capricorni. Some sources state that the stars are Aa, Ab1 and Ab2, Ba, and Bb, while others say that they are Aa, Aba and Abb, Ba, and Bb. So, ...
1
vote
1answer
106 views

Calculate the absolute magnitude for a multi-star system

We know that the absolute magnitude of a single star can be calculated with the formulae: $$M_{\rm bol} = 4.75 -2.5 \log_{10} \left(\frac{L_*}{L_{\odot}}\right)\ ,$$ $$M = -2.5 \log_{10}(L_* / L_0),$$...
6
votes
1answer
146 views

Could the unseen companion of HR 6819 be a close binary system?

Recently there was an announcement of a black hole candidate in the HR 6819 system (ESO Instrument Finds Closest Black Hole to Earth). In the proposed system, the black hole forms a close binary ...
1
vote
0answers
53 views

Stars moved positions [duplicate]

I have just witnessed 2 stars change positions from above the dominant star to the east of my location. Stratford-upon-Avon They moved off 1 by 1 and drifted away perfectly parallel to each other ...
11
votes
1answer
391 views

Are the orbits of all triple star systems at least technically unstable?

Background: In the Circular Restricted Three Body Problem (CR3BP, CRTBP) some halo orbits are mathematically stable. That means that the orbit of the third body is closed, periodic, and stable ...