Tara

Tara (Sanskrit: तारा — star) — stellar astrophysics engine for the AGNOS science stack.

What it does

Core library for star classification, stellar evolution, nucleosynthesis, spectral analysis, and atmosphere modeling. Provides cross-crate bridges to other AGNOS crates (falak, prakash, tanmatra) and visualization data structures for soorat rendering.

Modules

Module	Purpose
`star`	Core `Star` type and Morgan-Keenan spectral classes (OBAFGKM + WLTY)
`constants`	Physical and astronomical constants (IAU 2015, CODATA 2018)
`classification`	Hertzsprung-Russell diagram positioning and taxonomy
`evolution`	Main sequence, red giant, white dwarf, supernova tracks
`sse`	Analytic stellar evolution fitting formulae (Tout et al. 1996, Hurley et al. 2000)
`spectral`	Absorption, emission, Doppler shift, line broadening
`nucleosynthesis`	Fusion chains, element production, energy release
`atmosphere`	Opacity, radiative transfer, limb darkening
`luminosity`	Magnitude and distance calculations
`bridge`	Cross-crate primitive-value conversions (falak, prakash, tanmatra)
`integration::soorat`	Visualization structs and SSE evolution tracks for soorat rendering (feature-gated)

Features

Feature	What it enables
`soorat-compat`	Soorat visualization integration
`logging`	Tracing-based logging via `tracing-subscriber`
`optics`	Prakash optics bridge
`thermal`	Ushma thermal bridge
`nuclear`	Kimiya nuclear physics bridge

[dependencies]
tara = { version = "1.0.0", features = ["soorat-compat"] }

Consumers

AGNOS science stack, kiran, joshua, simulation apps.

Development

See CLAUDE.md for development process, conventions, and work loop. See CONTRIBUTING.md for contribution guidelines.

make check    # fmt + clippy + test + audit
make bench    # run benchmarks
make doc      # build documentation

License

GPL-3.0-only