Astronomy:Binary galaxy
From HandWiki
Short description: Two galaxies orbiting each other
A binary galaxy is a system of two interacting galaxies where their distance is 5-10 times less than the distance of the nearest galaxies of comparable brightness and dimension.[1] The orbital periods of theses galaxies are typically in the timescales of hundreds of millions of years.[2] The Milky Way galaxy and the nearest galaxy, Andromeda Galaxy may be classed as a binary galaxy.[3]
Binary galaxies, if spaced out a large distance, can be stable. However close pairs of galaxies can cause disruptions to their structures. They can also merge and become an interacting galaxy.[2]
These pairs of galaxies are useful in the field of astronomy to determine the mass of galaxies.[4]
References
- ↑ Karachentsev, I. D. (1979-11-01). "Binary galaxies" (in Russian). Zemlya Vselennaya (6). ISSN 0044-3948. https://inis.iaea.org/records/nhm6n-8ve10.
- ↑ 2.0 2.1 "Binary galaxies: life together, not always harmonious…". https://lilith.fisica.ufmg.br/~dsoares/reino/binarias-e.pdf.
- ↑ "Binary galaxies". https://ned.ipac.caltech.edu/level5/March01/Battaner/node15.html#:~:text=Binary%20stars%20constitute%20the%20best%20direct%20method,that%20binary%20galaxies%20should%20provide%20galactic%20masses..
- ↑ "Modern Cosmological Observations and Problems - G. Bothun". https://ned.ipac.caltech.edu/level5/Bothun2/Bothun4_3_2.html.
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