File:2MASS LSS chart-NEW Nasa.jpg

Summary

Panoramic view of the entire near-infrared sky reveals the distribution of galaxies beyond the <a href="https://en.wikipedia.org/wiki/Milky_Way" class="extiw" title="w:Milky Way">Milky Way</a>. The image is derived from the <a href="https://en.wikipedia.org/wiki/2MASS" class="extiw" title="w:2MASS">2MASS Extended Source Catalog (XSC)</a>—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 <a href="https://en.wikipedia.org/wiki/redshift" class="extiw" title="w:redshift">redshift</a> (numbers in parentheses) obtained from the <a href="https://en.wikipedia.org/wiki/Uppsala_General_Catalogue" class="extiw" title="w:Uppsala General Catalogue">UGC</a>, <a href="https://en.wikipedia.org/wiki/Harvard-Smithsonian_Center_for_Astrophysics" class="extiw" title="w:Harvard-Smithsonian Center for Astrophysics">CfA</a>, Tully NBGC, LCRS, <a href="https://en.wikipedia.org/wiki/2dF_Galaxy_Redshift_Survey" class="extiw" title="w:2dF Galaxy Redshift Survey">2dF</a>, 6dFGS, and <a href="https://en.wikipedia.org/wiki/Sloan_Digital_Sky_Survey" class="extiw" title="w:Sloan Digital Sky Survey">SDSS</a> surveys (and from various observations compiled by the <a href="https://en.wikipedia.org/wiki/NASA/IPAC_Extragalactic_Database" class="extiw" title="w:NASA/IPAC Extragalactic Database">NASA Extragalactic Database</a>), or photo-metrically deduced from the <a href="https://en.wikipedia.org/wiki/K_band#Infrared_astronomy_K_band" class="extiw" title="w:K band">K band</a> (2.2 μm). Blue/purple are the nearest sources (z < 0.01); green are at moderate distances (0.01 < z < 0.04) and red are the most distant sources that 2MASS resolves (0.04 < z < 0.1). The map is projected with an equal area Aitoff in the Galactic system (Milky Way at center).

Licensing

Lua error in package.lua at line 80: module 'strict' not found.