Interactive
Explore the cluster
Hands-on pieces built on the same physics as my Jaxstro models, reimplemented to run in your browser — for curiosity, for talks, for the classroom. Drag, zoom, and turn the knobs; the physics is honest, not decorative.
The cluster census
Sample a star cluster from the initial mass function and read it two ways at once — as points in space and on the H–R diagram. Every colour, temperature and luminosity is computed live from the same validated ZAMS physics my software uses.
Open →No star is an island
Switch gravity on and a static scatter becomes a system: energies get shuffled, the heaviest stars sink, and the cluster segregates itself. Integrated in your browser with a symplectic scheme of the family gravax uses — with the energy drift shown, so you can check it.
Open →Gas expulsion
Massive-star feedback drives the natal gas outward, unbinding the cloud and leaving the young cluster behind. Scrub the expulsion or let it play.
Open →Birth of a cluster
A turbulent cloud grows dense, ignites its stars, and blows itself clear with feedback — the life of a star cluster, told scroll by scroll from a real gravoturb model.
Open →Inference in progress
Watch a posterior over a cluster's mass, age, and size tighten as observations arrive — differentiable inference, using informax's method, on a synthetic cluster.