Anna Rosen, Ph.D.Computational Astrophysicist

Jaxstro · Birth populations

progenax

Truth-known cluster birth conditions.

Differentiable IMFs (including environment-dependent forms), mass-dependent multiplicity, and true-equilibrium King/EFF/LIMEPY structure with anisotropy and primordial mass segregation.

Readiness

MatureMature · methods paper in prep

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What's working

Three panels: a synthetic cluster's natal gas surface density with an embedded stellar population, then the same stars placed without and with mass–gas coupling, coloured by spectral type from blue O stars to red M stars.
PreliminaryBorn Where the Gas Is. A truth-known synthetic cluster: natal gas surface density with an IMF-sampled population (left), then the same stars placed without (centre) and with (right) mass–gas coupling. With coupling on, massive O and B stars preferentially sit in dense gas — primordial mass segregation as a knob you can turn, which is what makes it testable.

What's coming

Methods paper in preparation. It will establish the differentiable birth-condition model — environment-dependent IMFs, mass-dependent multiplicity, and true-equilibrium structure with primordial segregation.