Sebastian Lopez
0000-0003-0389-0902
76 papers found
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Tomography of the intergalactic medium with Ly alpha forests in close QSO pairs
Spectral shape of the UV ionizing background and OVI absorbers at z similar to 1.5 towards HS 0747+4259
On the incidence of strong MgII absorbers along gamma-ray burst sight lines
The evolution of Lyman alpha absorbers in the redshift range 0.5 < z < 1.9
The multiwavelength survey by Yale-Chile (MUSYC): Survey design and deep public UBVRIZ ' images and catalogs of the extended Hubble Deep Field-South
Discovery of a Galaxy Cluster in the Foreground of the Wide‐Separation Quasar Pair UM 425
HE 0141-3932: A bright QSO with an unusual emission line spectrum and associated absorption
Metal abundances in a damped Ly alpha system along two lines of sight at z=0.93
Disentangling microlensing and differential extinction in the double QSO HE 0512–3329
Distinct abundance patterns in multiple damped Ly alpha galaxies: Evidence for truncated star formation?
Discovery of a new quadruply lensed QSO: HS 0810+2554 – A brighter twin to PG 1115+080
Unusual metal abundances in a pair of damped Lyman alpha systems at z similar to 2 (vol 380, pg 117, 2001)
Metal abundances and ionization conditions in a possibly dust-free damped Ly alpha system at z=2.3
High-resolution OVI absorption line observations at 1.2 <= z <= 1.7 in the bright QSO HE 0515-4414
Unusual metal abundances in a pair of damped Lyman alpha systems at z similar to 2
Slit spectroscopy of nine new z > 3 southern QSOs: Damped Ly alpha and Lyman-limit systems
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