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4 papers · 2 filters
A luminous quasar at a redshift of z = 7.085
Daniel J. Mortlock, Stephen J. Warren, Bram P. Venemans +14
The intergalactic medium was not completely reionized until approximately a billion years after the Big Bang, as revealed by observations of quasars with redshifts of less than 6.5…
Discovery of a high-z protocluster with tunable filters: the case of 6C0140+326 at z=4.4
E. Kuiper, N. A. Hatch, B. P. Venemans +7
We present the first results obtained using a tunable narrowband filter in the search for high-z protoclusters. Using the recently commissioned red tunable filter on the Gran Teles…
A SINFONI view of flies in the Spiderweb: a galaxy cluster in the making
E. Kuiper, N. A. Hatch, G. K. Miley +8
The environment of the high-z radio galaxy PKS 1138-262 at z~2.2 is a prime example of a forming galaxy cluster. We use deep SINFONI data to perform a detailed study of the kinemat…
H-alpha emitters in z~2 proto-clusters: evidence for faster evolution in dense environments
N. A. Hatch, J. D. Kurk, L. Pentericci +4
This is a study of H-alpha emitters in two dense galaxy proto-clusters surrounding radio galaxies at z~2. We show that the proto-cluster surrounding MRC 1138-262 contains 14+/-2 ti…