What is it about?
search for the brightest candidate cluster member galaxies associated with the 3C sources and remove the contamination of foreground stars and galaxies along the lines of sight toward the 3C sources
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Why is it important?
We suggest that the detected cluster member galaxies are mainly passive ellipticals.
Perspectives
The overdensities are more pronounced for the PSO– IRAC color selection than for the IRAC color selection. The IRAC color selection rejects about 40% more sources, but it appears to reject also candidate cluster member galax- ies. While primarily elliptical galaxies lie close to the IRAC color cuts, the PSO–IRAC color cut primarily affects blue star forming galaxies.
zohreh ghaffari
Ruhr-Universitat Bochum
Read the Original
This page is a summary of: Galaxy overdensities around 3C radio galaxies and quasars at 1 < z
< 2.5 revealed by Spitzer
3.6/4.5 µm and Pan-STARRS, Astronomische Nachrichten, August 2017, Wiley,
DOI: 10.1002/asna.201713389.
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