When it comes to star formation, dwarf galaxies perform very poorly. A possible explanation for this behaviour involves photoelectric electrons heating the star-forming gas.
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J. Forbes
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Narayanan, D. Why dwarf galaxies come up short. Nature Phys 12, 636–637 (2016). https://doi.org/10.1038/nphys3807
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DOI: https://doi.org/10.1038/nphys3807