The Astrophysical Journal Supplement Series· 2016Q1
MESA ISOCHRONES AND STELLAR TRACKS (MIST) 0: METHODS FOR THE CONSTRUCTION OF STELLAR ISOCHRONES
- 1,899citations
- Q1SCImago
- 2016year
Short summary
A new method transforms stellar evolution tracks to a uniform basis, enabling interpolation for constructing stellar isochrones across a wide range of stellar types and evolutionary phases.
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Key points
- A method is described to transform stellar evolution tracks onto a uniform basis for isochrone construction.
- The method accommodates stellar types from substellar to high-mass stars and evolutionary phases from pre-main sequence to white dwarf cooling.
- It addresses departures from monotonic initial mass-lifetime relations caused by stellar physics.
- Convergence tests and recommendations for achieving accuracy are provided.
AI-generated from the title and abstract; the full text is not read.
Abstract
ABSTRACT I describe a method to transform a set of stellar evolution tracks onto a uniform basis and then interpolate within that basis to construct stellar isochrones. This method accommodates a broad range of stellar types, from substellar objects to high-mass stars, and phases of evolution, from the pre-main sequence to the white dwarf cooling sequence. I discuss situations in which stellar physics leads to departures from the otherwise monotonic relation between initial stellar mass and lifetime, and how these may be dealt with in isochrone construction. I close with convergence tests and recommendations for the number of points in the uniform basis and the mass between tracks in the original grid required to achieve a certain level accuracy in the resulting isochrones. The programs that implement these methods are free and open-source; they may be obtained from the project webpage. 1
The authors' abstract, as published at the source. The Astrophysical Journal Supplement Series, 2016 · DOI ↗
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Field: Astronomy and Astrophysics
Astronomy and AstrophysicsPhysics and Astronomy