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The nature of the dwarf starforming galaxy associated with GRB 060218 / SN2006aj
K. Wiersema, S. Savaglio, P. M. Vreeswijk +9
We present high resolution VLT UVES and low resolution FORS optical spectroscopy of supernova 2006aj and its host galaxy, associated with the nearby (z = 0.03342) gamma-ray burst G…
Rapid-Response Mode VLT/UVES spectroscopy of GRB060418: Conclusive evidence for UV pumping from the time evolution of FeII and NiII excited- and metastable-level populations
P. M. Vreeswijk, C. Ledoux, A. Smette +11
We present high-resolution spectroscopic observations of GRB060418, obtained with VLT/UVES. These observations were triggered using the VLT Rapid Response Mode (RRM), which allows…
The host of GRB 030323 at z=3.372: a very high column density DLA system with a low metallicity
P. M. Vreeswijk, S. L. Ellison, C. Ledoux +29
We present photometry and spectroscopy of the afterglow of GRB 030323. VLT spectra of the afterglow show damped Lya (DLA) absorption and low- and high-ionization lines at a redshif…
The Abundances of Nitrogen and Oxygen in Damped Lyman Alpha Systems
Max Pettini, Sara L. Ellison, Jacqueline Bergeron +1
We take a fresh look at the abundance of nitrogen in DLAs with oxygen abundances between 1/10 and 1/100 of solar. This is a metallicity regime poorly sampled in the local universe…
The CORALS Survey II: Clues to Galaxy Clustering Around QSOs from z_abs ~ z_em Damped Lyman Alpha Systems
Sara L. Ellison, Lin Yan, Isobel M. Hook +3
We present a list of z_abs ~ z_em (Delta v < 3000 km/s) DLAs discovered during the CORALS survey for absorbers in a radio-selected QSO sample. On the assumption that z_abs ~ z_em D…
Unusual Metal Abundances in a Pair of Damped Lyman Alpha Systems at z~2
Sara L. Ellison, Sebastian Lopez
We present high resolution spectroscopic observations of two neighbouring damped Lya systems (DLAs) along the same line of sight towards B2314-409. Due to their separation (v ~ 200…