Stellar Jeans Mass Collapse Calculator
Star formation & interstellar astrophysics: Calculate the critical Jeans mass ($M_J$), Jeans length ($\lambda_J$), isothermal sound speed ($c_s$), and gravitational free-fall collapse timescale ($t_{\text{ff}}$).
Interstellar Gas Cloud Parameters
Cold giant molecular cloud core: 10–20 K
Dense core: 10⁴–10⁶ particles / cm³
Molecular hydrogen H₂ + He ~ 2.35
Observed core clump mass
Jeans Collapse & Timescale Output
Critical Jeans Mass M_J:
--
Solar Masses M_☉
Critical Jeans Length λ_J:
--
parsecs (Astronomical Units AU)
Free-Fall Time t_ff:
--
years to collapse
Isothermal Sound Speed c_s:
--
m/s acoustic pressure velocity
| Cloud Physical Mass Density ρ: | -- |
| Jeans Sound Crossing Time t_cross: | -- |
| Mass Ratio (M_actual / M_J): | -- |
| Gravitational Stability Evaluation: | -- |
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