877 citations · 7.2k across the 375 of their papers we have counts for
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Some thoughts and some new results about the Butcher-Oemler effect
S. Andreon
These short notes collect some thoughts about the way Butcher-Oemler-like and evolutionary studies are performed. We emphasize the shortcomings of several overlooked technical ingr…
The XMM Large-Scale Structure Survey: An initial sample of galaxy groups and clusters to a redshift z<0.6
J. P. Willis, F. Pacaud, I. Valtchanov +14
We present X-ray and optical spectroscopic observations of twelve galaxy groups and clusters identified within the XMM Large-Scale Structure (LSS) survey. Groups and clusters are s…
Rigorous luminosity function determination in presence of a background: theory and application to two intermediate redshift clusters
S. Andreon, G. Punzi, A. Grado
In this paper we present a rigorous derivation of the luminosity function (LF) in presence of a background. Our approach is free from the logical contradictions of assigning negati…
Batch discovery of nine z~1 clusters using x-ray and K or R,z' images
S. Andreon, I. Valtchanov, L. R. Jones +5
We present results of an initial search for clusters of galaxies at z~1 and above, using data from 2.9 square degrees of XMM-Newton images. By selecting weak potentially extended X…