Extremely Red Galaxies: Old or Dusty?
Cimatti, Andrea · Andreani, Paola · Röttgering, Huub · Tilanus, Remo
Original · EN
The nature of the extremely red galaxies is poorly known, the critical issue being whether they are old ellipticals at z>1.5 or distant star-forming galaxies strongly reddened by dust extinction. Here we review the little we know about them, and we present recent and preliminary results from our ongoing submillimeter -- millimeter observations.
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