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Beyond the magnitude limit of the Hubble Deep Field
Author/s: A. Marín-Franch y A. Aparicio
Reference: The Astrophysical Journal, 594:63–74, 2003 September 1 | Link
The image shows the Hubble Deep Field, a deep field of galaxies observed by the HST. In the lower part the result of the application of the SBF technique can be seen, resulting in the detection of very weak galaxies (final image, bottom right).
Using the Surface Brightness Fluctuation technique (SBF), IAC researchers have succeeded in detecting galaxies beyond Hubble's photometric detection limit. These new detections are fundamental for obtaining accurate information about the number of weak galaxies. This number is vital for Cosmology and for the theory of galaxy formation and evolution.