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Updated: Jun 30, 2026
06:16
mirMachine: A One-Stop Shop for Plant miRNA Annotation
Published on: May 1, 2021
Wonderful Mira
1Department of Applied Mathematics, University of Leeds, Woodhouse Lane, Leeds, UK. cjw@maths.leeds.ac.uk
Summary
Mira A, a dying star, displays a comet-like structure due to enhanced mass loss. This bow shock and tail formation offers insights into stellar evolution and may impact our Sun.
Area of Science:
- Astronomy
- Astrophysics
- Stellar Evolution
Background:
- Mira A is a prototype 'Mira' variable star, known for brightness variability.
- It is the primary star in a binary system and is nearing the end of its life.
- Mira A is experiencing significant mass loss, forming observable structures.
Purpose of the Study:
- To review recent modeling of Mira A's cometary appearance.
- To place Mira A within its stellar evolutionary context.
- To predict Mira A's future and discuss implications for the Sun.
Main Methods:
- Review of recent observational data and astrophysical modeling.
- Comparative analysis with similar stars (R Hya) and planetary nebulae (Sh 2-188).
- Discussion of ram pressure stripping and bow shock dynamics.
Main Results:
- Observation of an arc-like structure and a 12 light-year tail of material.
- Modeling suggests a bow shock with a ram pressure stripped tail.
- Mira A's appearance is linked to its advanced evolutionary stage and mass loss.
Conclusions:
- Mira A's structure is a result of interaction between its stellar wind and the interstellar medium.
- Understanding Mira A provides insights into the late stages of stellar evolution for similar stars.
- The study has implications for understanding our own Sun's interaction with its environment.
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