Z ~ 1.6; star formation and angular diameter distance peak coincidence?

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SUMMARY

The discussion centers on the correlation between star formation history and angular diameter distance peaking at redshift ~ 1.6. It concludes that any observed coincidence is purely coincidental. Star formation is influenced by the physics of structure formation, reaching its peak at a specific epoch in the universe's timeline. In contrast, angular diameter distance varies based on the observer's time, indicating no inherent relationship between the two phenomena.

PREREQUISITES
  • Understanding of redshift and its significance in cosmology
  • Knowledge of star formation processes and structure formation in the universe
  • Familiarity with angular diameter distance and its calculation
  • Basic principles of observational cosmology
NEXT STEPS
  • Research the physics of structure formation in the early universe
  • Study the implications of redshift on cosmic observations
  • Explore the relationship between star formation rates and cosmic time
  • Investigate angular diameter distance calculations in cosmological models
USEFUL FOR

Astronomers, cosmologists, and astrophysicists interested in the dynamics of star formation and the implications of angular diameter distance in observational studies.

zhermes
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Is there any reason to expect both the star formation history and the angular diameter distance to peak at around the same value (redshift ~ 1.6)?
 
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zhermes said:
Is there any reason to expect both the star formation history and the angular diameter distance to peak at around the same value (redshift ~ 1.6)?
Only by pure coincidence. Star formation depends upon the physics of the formation of structure, and peaks at a specific time after the start of our universe. Angular diameter distance peaks at different times depending upon the time of the observer.
 

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