98 citations · 354 across the 10 of their papers we have counts for
10 papers
Peering into the Young Planetary System AB Pic. Atmosphere, Orbit, Obliquity & Second Planetary Candidate
P. Palma-Bifani, G. Chauvin, M. Bonnefoy +24
We aim to revisit the system AB Pic which has a known companion at the exoplanet/ brown-dwarf boundary. We based this study on a rich set of observations to investigate the compani…
Radio-loud Quasars above Redshift 4: VLBI Imaging of an Extended Sample
M. Krezinger, K. Perger, K. É. Gabányi +7
High-redshift radio sources provide plentiful opportunities for studying the formation and evolution of early galaxies and supermassive black holes. However, the number of known ra…
DA white dwarfs from the LSS-GAC survey DR1: the preliminary luminosity and mass functions and formation rate
A. Rebassa-Mansergas, X. -W. Liu, R. Cojocaru +9
Modern large-scale surveys have allowed the identification of large numbers of white dwarfs. However, these surveys are subject to complicated target selection algorithms, which ma…
Temperature fluctuations in H II regions: t2 for the two-phase model
Y. Zhang, B. Ercolano, X. -W. Liu
Aims: We investigate temperature fluctuations in H II regions in terms of a two-phase model, which assumes that the nebular gas consists of a hot and a cold phase. Methods: We deri…
Fe/Ni ratio in the Ant Nebula Mz 3
Y. Zhang, X. -W. Liu
We have analyzed the [Fe II] and [Ni II] emission lines in the bipolar planetary nebula Mz~3. We find that the [Fe II] and [Ni II] lines arise exclusively from the central regions.…
Chemical abundances for Hf 2-2, a planetary nebula with the strongest known heavy element recombination lines
X. -W. Liu, M. J. Barlow, Y. Zhang +2
We present high quality optical spectroscopic observations of the planetary nebula (PN) Hf 2-2. The spectrum exhibits many prominent optical recombination lines (ORLs) from heavy e…