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Contact: Dr. Ivo Labbé
ivo@ociw.edu
626-304-0265
Carnegie Institution
Caption: This series of images shows two galaxies, dubbed 964 and 1417, which existed 700 million years after the Big Bang. Data from the Spitzer images allowed researchers to calculate their mass, age, distance and star formation rates, making these the youngest and most distant galaxies for which this information exists. From left, the first four columns were taken with cameras aboard the Hubble Space Telescope: i775 and z850 were taken in visible light wavelengths with the Advanced Camera for Surveys (ACS), while J110 and H160 were taken in near-infrared wavelengths with the Near Infrared Camera and Multi-Object Spectrograph (NICMOS). The final two columns, 3.6 ìm and 4.5 ìm, were taken in the mid-infrared with the Infrared Array Camera (IRAC) aboard the Spitzer Space Telescope.
Credit: Image from Astrophysical Journal Letters, Vol. 649, p. L67. Copyright 2006 American Astronomical Society, used with permission.
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