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Brightest X-ray clusters of galaxies in the CFHTLS wide fields: Catalog and optical mass estimator
M. Mirkazemi, A. Finoguenov, M. J. Pereira +13
The CFHTLS presents a unique data set for weak lensing studies, having high quality imaging and deep multi-band photometry. We have initiated an XMM-CFHTLS project to provide X-ray…
An excess of dusty starbursts related to the Spiderweb galaxy
H. Dannerbauer, J. D. Kurk, C. De Breuck +16
We present APEX LABOCA 870 micron observations of the field around the high-redshift radio galaxy MRC1138-262 at z=2.16. We detect 16 submillimeter galaxies in this ~140 square arc…
A First Site of Galaxy Cluster Formation: Complete Spectroscopy of a Protocluster at
Jun Toshikawa, Nobunari Kashikawa, Roderik Overzier +8
We performed a systematic spectroscopic observation of a protocluster at in the Subaru Deep Field. We took spectroscopy for all 53 -dropout galaxies down to $z'=27.09\…
The AGN Population in X-ray Selected Galaxy Groups at
Semyeong Oh, John S. Mulchaey, Jong-Hak Woo +6
We use Chandra data to study the incidence and properties of Active Galactic Nuclei (AGN) in 16 intermediate redshift () X-ray-selected galaxy groups in the Chandra…
Detection of the Gravitational Lens Magnifying a Type Ia Supernova
Robert M. Quimby, Masamune Oguri, Anupreeta More +8
Objects of known brightness, like Type Ia supernovae (SNIa), can be used to measure distances. If a massive object warps spacetime to form multiple images of a background SNIa, a d…
An updated analytic model for the attenuation by the intergalactic medium
Akio K. Inoue, Ikkoh Shimizu, Ikuru Iwata +1
We present an updated version of the so-called Madau model for the attenuation by the intergalactic neutral hydrogen against the radiation from distant objects. First, we derive a…