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The Spitzer Survey of the Large Magellanic Cloud Surveying the Agents of a
Galaxy's Evolution (SAGE), will trace
the life cycle of observable matter that drives the evolution of a
galaxy's appearance. SAGE will reveal over 6 million sources including
~150,000 evolved stars, ~50,000 young stellar objects and the diffuse
interstellar medium with column densities > 1.2×1021 cm -2. The data will
provide fundamental insights into the physical processes of the interstellar
medium, the formation of new stars and the injection of mass by evolved
stars and their relationships on the galaxy-wide scale of the Large
Magellanic Cloud. SAGE will be the crucial link between Spitzer's survey
of individual sources in the Milky Way (GLIMPSE) and its surveys of galaxies
(e.g., SINGS) and a stepping stone to the deep surveys
(e.g., GOODS &
SWIRE).
SAGE is a large General Observer program selected in Cycle 2 of the Spitzer
Space Telescope.
The Spitzer Space Telescope is a space-borne, cryogenically-cooled
infrared observatory. Spitzer Space Telescope was launched by a Delta
rocket from the Kennedy Space Center on August 25, 2003.
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