Panoramic view of the 2MASS near-infrared sky reveals the
distribution of galaxies beyond the Milky Way, extending out
to 400 Mpc. The Spitzer Wide-area InfraRed Extragalactic
Survey (SWIRE) will probe to depths >10X deeper than 2MASS,
back to the era of galaxy formation. The image is derived
from the 2MASS Extended Source Catalog (XSC) -- more than
1.5 million galaxies, and the Point Source Catalog (PSC) --
nearly 0.5 billion Milky Way stars. The galaxies are color
coded by redshift, photometrically deduced from the K band
(2.2 um) or as given in the NASA Extragalactic Database (NED).
Blue are the nearest sources (z < 0.01), green are at moderate
distances (0.01 < z < 0.04) and red are the most distant sources
(0.04 < z < 0.1). The map is projected with an equal area aitoff
in the Galactic system (Milky Way at center). The SWIRE fields:
Lockman Hole, ELAIS N1/N2/S1, XMM & Chandra-S are shown their
projected field coverage.
Click here for a larger image.
Image created by Dr. Tom Jarrett.
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