Bursts of star formation in computer simulations of dwarf galaxies

Statistics – Computation

Scientific paper

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Astronomical Models, Compact Galaxies, Computational Astrophysics, Computerized Simulation, Dwarf Galaxies, Star Distribution, Star Formation, Cosmic Gases, Stellar Mass Accretion, Stellar Mass Ejection, Stochastic Processes

Scientific paper

A three-dimensional Stochastic Self-Propagating Star Formation (SSPSF) model of compact galaxies is presented. Two phases of gas, active and inactive, are present, and permanent depletion of gas in the form of long lived, low mass stars and remnants occurs. Similarly, global infall of gas from a galactic halo or through galactic cannibalism is permitted. The parameters are based on the observed properties of the compact blue galaxy I Zw 36. The results indicate that bursts of star formation occur much more frequently in these runs than continuous nonbursting star formation, suggesting that the blue compact galaxies are probably undergoing bursts rather than continuous, nonbursting low-level star formation activity.

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