Ten years ago, the discovery that the expansion of the universe is accelerating put in place
the last major building block of the present cosmological model, in which the universe is …

Abstract Models where dark matter and dark energy interact with each other have been
proposed to solve the coincidence problem. We review the motivations underlying the need …

ABSTRACT WMAP precision data enable accurate testing of cosmological models. We find
that the emerging standard model of cosmology, a flat Λ-dominated universe seeded by a …

We present the large-scale correlation function measured from a spectroscopic sample of
46,748 luminous red galaxies from the Sloan Digital Sky Survey. The survey region covers …

ABSTRACT The High-z Supernova Search Team has discovered and observed eight new
supernovae in the redshift interval z= 0.3–1.2. These independent observations, analyzed …

▪ Abstract We discuss the importance of very metal-poor stars to develop an understanding
of the nature of the first stars that formed in the Universe and the nucleosynthesis events …

We present new determinations of the cosmic expansion history from red-envelope galaxies.
We have obtained for this purpose high-quality spectra with the Keck-LRIS spectrograph of …

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We review the paradigm of quintom cosmology. This scenario is motivated by the
observational indications that the equation-of-state of dark energy across the cosmological …

The content of neutron-capture (trans-iron-peak) elements in the low-metallicity Galactic
halo varies widely from star to star. The differences are both in bulk amount of the neutron …