4 papers
High-redshift GRB 140304A at z = 5.282 with flaring activity: A multi-wavelength study
Shashi. B. Pandey, Amit. K. Ror, A. J. Castro-Tirado +48
Context. This article presents a detailed multi-wavelength analysis of GRB 140304A at z = 5.282, having uncommon late-time flaring features. The aim is to study GRB 140304A and oth…
The ubiquity of turbulence in the expanding kinematics of the ionized shells of Galactic planetary nebulae
Francisco Ruiz-Escobedo, Michael G. Richer, José Alberto López
We present an analysis of the residual velocities from a sample of 105 Galactic planetary nebulae (PNe), the largest done to date on this subject. The analysis has been carried out…
Kinematics and physical structure of Ou 5: A bipolar planetary nebula with extreme abundance discrepancy and an eclipsing binary core
William J. Henney, J. A. López, Ma. T. GarcÃa-DÃaz +5
We present new deep imaging and high-resolution spectroscopy of the extreme-abundance-discrepancy planetary nebula Ou 5, together with photoionization modelling aimed at probing it…
Kinematical analysis of PNe with high ADF: Hf 2-2 and M 1-42
Lesly Castañeda-Carlos, Michael G. Richer, Silvia Torres-Peimbert +2
We use deep Echelle spectroscopy of the planetary nebulae Hf 2-2 and M1-42 to study the characteristics of the plasma that gives rise to their high abundance discrepancy factors (7…