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Area of Science:

  • * Astronomy and Astrophysics
  • * Extragalactic Astronomy
  • * Galaxy Formation and Evolution

Background:

  • * The Fornax dwarf spheroidal galaxy and its globular clusters (GCs) are key to understanding galactic evolution.
  • * Studying the early universe requires accurate models of galaxy and GC formation.

Purpose of the Study:

  • * Reconstruct the UV luminosity evolution of the Fornax galaxy and its GCs.
  • * Investigate the nature of compact sources in the Hubble Frontier Fields (HFFs).
  • * Assess the impact of GC formation on galaxy property estimations.

Main Methods:

  • * Analysis of the stellar fossil record.
  • * Stellar population synthesis modeling.
  • * Comparison with Hubble Frontier Fields observations.

Main Results:

  • * Fornax's proto-GCs generate 10-100x more UV flux than field populations, despite low stellar mass.
  • * Compact HFF sources are more likely GCs than faint galaxies, complicating UV luminosity function at z > 3.
  • * GC formation can introduce significant errors in abundance matching.

Conclusions:

  • * Some compact HFF objects may be early detections of proto-GCs.
  • * Further research can improve the link between local GCs and early universe proto-GCs.