Fields observed by SDSS-III around the south and north galactic poles. They cover an area of around 10 000 deg2. The zoomed image shows Messier 33, a spiral galaxy in the local group containing our galaxy, the Andromeda galaxy (M31)and M33.
The Sloan Digital Sky Survey III, a collaboration with contributions from researchers at the CNRS and CEA, has just released the widest sky survey ever carried out to the international scientific community at the annual meeting of the American Astronomy Society held in Seattle between January 10 and 13, 2011. This survey provides an image and a catalog of sources covering almost all of the sky in five colors and with a quality never before achieved in terms of the sky coverage and the accuracy of the luminosity measurements. The catalog, containing around 470 million objects (galaxies, stars, quasars, etc.), will be published in the Astrophysical Journal Supplements.
Aihara et al., The Eighth Data Release of the Sloan Digital Sky Survey: First Data from SDSS-III, arxiv/astro-ph 1101.1559 ; Une description du relevé SDSS-III est publiée à la même occasion : Eisenstein et al., SDSS-III: Massive Spectroscopic Surveys of the Distant Universe, the Milky Way Galaxy, and Extra-Solar Planetary Systems, arxiv/astro-ph 1101.1529.
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