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24 papers · 1 filter
The Multiwavelength Survey by Yale-Chile (MUSYC): Deep Near-Infrared Imaging and the Selection of Distant Galaxies
Ryan Quadri, Danilo Marchesini, Pieter van Dokkum +18
We present deep near-infrared JHK imaging of four 10'x10' fields. The observations were carried out as part of the Multiwavelength Survey by Yale-Chile (MUSYC) with ISPI on the CTI…
The late stages of the evolution of intermediate-mass primordial stars: the effects of overshooting
Pilar Gil-Pons, Jordi Gutierrez, Enrique Garcia-Berro
We compute and analyze the evolution of primordial stars of masses at the ZAMS between 5 M_sun and 10 M_sun, with and without overshooting. Our main goals are to determine the natu…
A broadband spectroscopic search for CO line emission in HDF850.1: the brightest submillimetre object in the Hubble Deep Field North
J. Wagg, D. H. Hughes, I. Aretxaga +4
Using the 100-m Green Bank Telescope, we have conducted a cm-wavelength search for CO J=1-0 line emission towards the high-redshift, far-infrared luminous object, HDF850.1 over the…
Stationary vs. singular points in an accelerating FRW cosmology derived from six-dimensional Einstein-Gauss-Bonnet gravity
E. Elizalde, A. N. Makarenko, V. V. Obukhov +2
Six-dimensional Einstein-Gauss-Bonnet gravity (with a linear Gauss-Bonnet term) is investigated. This theory is inspired by basic features of results coming from string and M-theor…
Cy 2201-3201: An Edge-on Spiral Gravitational Lens
F. J. Castander, E. Treister, J. Maza +1
We present the CXOCY J220132.8-320144 system, which is composed of an edge-on spiral galaxy at z=0.32 lensing a z=3.9 background quasar. Two images of the quasar are seen. The geom…
String-inspired Gauss-Bonnet gravity reconstructed from the universe expansion history and yielding the transition from matter dominance to dark energy
Guido Cognola, Emilio Elizalde, Shin'ichi Nojiri +2
We consider scalar-Gauss-Bonnet and modified Gauss-Bonnet gravities and reconstruct these theories from the universe expansion history. In particular, we are able to construct vers…