Kīauhōkū

Python utilities for stellar model grid interpolation.

©2025, Zachary R. Claytor

Space Telescope Science Institute

If you find this package useful, please cite Claytor et al. (2020) and the ASCL entry.

Download the model grids from Zenodo.

Kīauhōkū

From Hawaiian:

1. vt. To sense the span of a star’s existence (i.e., its age).

2. 14. The speed of a star (in this case, its rotational speed).

This name was created in partnership with Dr. Larry Kimura and Bruce Torres Fischer, a student participant in A Hua He Inoa, a program to bring Hawaiian naming practices to new astronomical discoveries. We are grateful for their collaboration.

Kīauhōkū is a suite of Python tools to interact with, manipulate, and interpolate between stellar evolutionary tracks in a model grid. It was designed to work with the model grid used in Claytor et al. (2020), which was generated using YREC with the magnetic braking law of van Saders et al. (2013), but other stellar evolution model grids are available.

Contents:

• About
• Quickstart
• Available Grids
• Adding Custom Grids
• EEPs - Equivalent Evolutionary Phases
• Extensions
• Tutorials
• API Reference
• Papers
• Contribute