Galaxy HUDF-JD2 – Infrared

Galaxy HUDF-JD2 – Infrared

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Fast Facts
News release ID: STScI-2005-28
Release Date: Sep 27, 2005
Image Use: Copyright
About this image

The Spitzer Infrared Array Camera (IRAC), easily detected the galaxy at longer infrared wavelengths. Spitzer's IRAC is sensitive to the light from older, redder stars which should make up most of the mass in a galaxy. The brightness of the infrared galaxy suggests that it is quite massive.

Cosmology, Deep Fields, Distant Galaxies, Hubble Ultra Deep Field, Observations, Survey


NASA, ESA, B. Mobasher (STScI/ESA) and M. Dickinson (Spitzer Science Center)