171 citations · 2.8k across the 115 of their papers we have counts for
8 papers · 1 filter
On the mass-metallicity relation, velocity dispersion and gravitational well depth of GRB host galaxies
Maryam Arabsalmani, Palle Møller, Johan P. U. Fynbo +4
We analyze a sample of 16 absorption systems intrinsic to long duration GRB host galaxies at for which the metallicities are known. We compare the relation between th…
The mysterious optical afterglow spectrum of GRB140506A at z=0.889
J. P. U. Fynbo, T. Krühler, K. Leighly +40
Context. Gamma-ray burst (GRBs) afterglows probe sightlines to star-forming regions in distant star-forming galaxies. Here we present a study of the peculiar afterglow spectrum of…
The ESO UVES Advanced Data Products Quasar Sample - IV. On the deficiency of Argon in DLA systems
Tayyaba Zafar, Giovanni Vladilo, Celine Peroux +5
In this work, we study argon abundances in the interstellar medium of high-redshift galaxies (2<z(abs)<4.2) detected as Damped Lya absorbers (DLA) in the spectra of background quas…
The ESO UVES Advanced Data Products Quasar Sample - III. Evidence of Bimodality in the [N/alpha] Distribution
Tayyaba Zafar, Miriam Centurion, Celine Peroux +4
We report here a study of nitrogen and -capture element (O, S, and Si) abundances in 18 Damped Ly Absorbers (DLAs) and sub-DLAs drawn from the ESO-UVES Advanced Data Products…
Evolution of dust content in galaxies probed by gamma-ray burst afterglows
Tzu-Ming Kuo, Hiroyuki Hirashita, Tayyaba Zafar
Because of their brightness, gamma-ray burst (GRB) afterglows are viable targets for investigating the dust content in their host galaxies. Simple intrinsic spectral shapes of GRB…
Verifying the mass-metallicity relation in damped Lyman-alpha selected galaxies at 0.1<z<3.2
L. Christensen, P. Møller, J. P. U. Fynbo +1
A scaling relation has recently been suggested to combine the galaxy mass-metallicity (MZ) relation with metallicities of damped Lyman-alpha systems (DLAs) in quasar spectra. Based…
On the (in)variance of the dust-to-metals ratio in galaxies
Lars Mattsson, Annalisa De Cia, Anja C. Andersen +1
Recent works have demonstrated a surprisingly small variation of the dust-to-metals ratio in different environments and a correlation between dust extinction and the density of sta…
Nitrogen Abundances in Damped Ly-alpha Absorbers
Tayyaba Zafar, Miriam Centurion, Paolo Molaro +3
Nitrogen is thought to have both primary and secondary origins depending on whether the seed carbon and oxygen are produced by the star itself (primary) or already present in the i…