7 papers
Electronic states of Mn4+ ions in p-type GaN
B. Han, B. W. Wessels, M. P. Ulmer
The electronic states of manganese in p-type GaN are investigated using photoluminescence (PL) and photoluminescence excitation (PLE) spectroscopies. A series of sharp PL lines at…
Uncertainties on Clusters of Galaxies Distances
C. Adami, M. Ulmer
We investigate in this paper the error on the cluster redshift estimate as a function of: (1) the number of galaxy structures along the line of sight; (2) the morphology of the clu…
The CFH Optical PDCS survey (COP) I: The Data
C. Adami, B. Holden, F. J. Castander +5
This paper presents and gives the COP (COP: CFHT Optical PDCS; CFHT: Canada-France-Hawaii Telescope; PDCS: Palomar Distant Cluster Survey) survey data. We describe our photometric…
Simulations Applied to the Bright SHARC XCLF: Results and Implications
M. P. Ulmer, C. Adami, R. Pildis +3
We have performed simulations of the effectiveness of the Serendipitous High-redshift Archival ROSAT Cluster (SHARC) survey for various model universes. We find, in agreement with…
A Turn-over in the Galaxy Luminosity Function of the Coma Cluster Core?
C. Adami, M. P. Ulmer, F. Durret +5
Our previous study of the faint end (R21.5) of the galaxy luminosity function (GLF) was based on spectroscopic data in a small region near the Coma cluster center. In this pr…
No Evolution in the X-ray Cluster Luminosity Function out to z=0.7
A. K. Romer, R. C. Nichol, C. A. Collins +5
In contrast to claims of strong negative evolution by other groups, we find no evidence for evolution of the X-ray cluster luminosity function out to z=0.7