A sample of 198 soft X-ray-selected active galactic nuclei (AGN) from the ROSAT International X-ray Optical Survey (RIXOS) is used to investigate the X-ray...
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PublicationThe luminosity function evolution of soft X-ray-selected active galactic nuclei in the RIXOS survey
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PublicationThe mass and galaxy distribution around SZ-selected clusters
We present measurements of the radial profiles of the mass and galaxy number density around Sunyaev-Zel'dovich (SZ)-selected clusters using both weak lensing...
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PublicationThe metal-poor end of the Spite plateau. I. Stellar parameters, metallicities, and lithium abundances
Context. The primordial nature of the Spite plateau is at odds with the WMAP satellite measurements, implying a primordial Li production at least three times...
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PublicationThe Metallicity of Pregalactic Globular Clusters: The Observational Consequences of the First Stars
We explore a scenario in which metal-poor globular clusters (GCs) are enriched by the first supernovae in the universe. If the first stars in a 107 Msolar dark...
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PublicationThe miniJPAS survey: A preview of the Universe in 56 colors
The Javalambre-Physics of the Accelerating Universe Astrophysical Survey (J-PAS) will scan thousands of square degrees of the northern sky with a unique set of...
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PublicationThe Nature and Size of the Optical Continuum Source in QSO 2237+0305
From the peak of a gravitational microlensing high-magnification event in the A component of QSO 2237+0305, which was accurately monitored by the Gravitational...
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PublicationThe near-IR properties and continuum shapes of high redshift quasars from the Sloan Digital Sky Survey
We present J-H-K' photometry for a sample of 45 high redshift quasars found by the Sloan Digital Sky Survey. The sample was originally selected on the basis of...
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PublicationThe Optical/IR Counterpart of the 1998 July 3 Gamma-Ray Burst and Its Evolution
We imaged the X-ray error box of GRB 980703, beginning 22.5 hr after the gamma-ray event, in both the optical R and near-infrared H bands. A fading optical/IR...
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PublicationThe OTELO Project
OSIRIS is the Spanish Day One instrument for the GTC 10.4-m telescope. OSIRIS is a general purpose instrument for imaging, low-resolution long slit and multi...