The formation and evolution of galaxies within merging dark matter haloes*
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Discussion
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Implication
Semi-analytic models reveal galaxy evolution in merging dark matter haloes, indicating undetectable structures.
Key Points
- The research aims to model galaxy formation within a hierarchical clustering context of dark matter haloes.
- Constructed semi-analytic models based on Kauffmann & White's algorithm for merging histories.
- Investigated haloes with circular velocities of 220 km s–1 and 1000 km s–1 to tune model parameters.
- Analyzed the properties of galaxy populations including the gas mass-luminosity relation and morphology variations.
- Correctly reproduced observed trends in galaxy luminosity, colour, gas content, and morphology.
- Predicted zero-point of the Tully–Fisher relation indicates standard cold dark matter models overestimate halo numbers.
- Found a B-band luminosity density that is twice as high as observed, suggesting many haloes are undetectable.
Cite This Study
Kauffmann et al. (1993) studied this question.