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114 papers · 1 filter
EXSdetect: an end-to-end software for extended source detection in X-ray images: application to Swift-XRT data
Teng Liu, Paolo Tozzi, Elena Tundo +4
Aims. We present a stand-alone software (named EXSdetect) for the detection of extended sources in X-ray images. Our goal is to provide a flexible tool capable of detecting extende…
CLASH: The enhanced lensing efficiency of the highly elongated merging cluster MACS J0416.1-2403
A. Zitrin, M. Meneghetti, K. Umetsu +21
We perform a strong-lensing analysis of the merging galaxy cluster MACS J0416.1-2403 (M0416; z=0.42) in recent CLASH/HST observations. We identify 70 new multiple images and candid…
The evolution of galaxy sizes
Bianca M. Poggianti, Rosa Calvi, Daniele Bindoni +10
We present a study of galaxy sizes in the local Universe as a function of galaxy environment, comparing clusters and the general field. Galaxies with radii and masses comparable to…
First stars XVI. STIS/HST abundances of heavy-elements in the uranium-rich star CS 31082-001
C. Siqueira Mello, M. Spite, B. Barbuy +14
Detailed abundances of the elements produced by r-process nucleosynthesis in various circumstances are our best observational clues to their origin, since the site(s) of r-element…
Non-linear evolution of the cosmic neutrino background
Francisco Villaescusa-Navarro, Simeon Bird, Carlos Peña-Garay +1
We investigate the non-linear evolution of the relic cosmic neutrino background by running large box-size, high resolution N-body simulations. Our set of simulations explore the pr…
The BOSS Lyman-alpha Forest Sample from SDSS Data Release 9
Khee-Gan Lee, Stephen Bailey, Leslie E. Bartsch +50
We present the BOSS Lyman-alpha (Lya) Forest Sample from SDSS Data Release 9, comprising 54,468 quasar spectra with zqso > 2.15 suitable for Lya forest analysis. This data set prob…