34 citations · 127 across the 8 of their papers we have counts for
8 papers
Physical and kinematical characteristics of Wolf-Rayet central stars and their host planetary nebulae
Zainab Awad, Alaa Ali
We addressed the physical and kinematical properties of Wolf -- Rayet [WR] central stars (CSs) and their hosting planetary nebulae (PNe). The studied sample comprises all [WR] CSs…
The variability and radial velocity of planetary nebulae central stars
A. Ali, A. Mindil
The extremely accurate estimates of stellar variability and radial velocity in the Gaia Data Release 3 (Gaia DR3) have enabled us to examine the close binarity and radial velocity…
A new statistical distance scale for planetary nebulae, based on Gaia EDR3
A. Ali, E. Algarni, A. Mindil +1
The present work aims to build a new statistical distance scale for planetary nebulae (PNe) based on a rigorous calibration sample. The distances of the calibration sample are deri…
An investigation of planetary nebulae accompanying PG1159 central stars, based on Gaia DR2 measurements
A. Ali, Wedad R. Alharbi
This article discusses the physical and kinematical characteristics of planetary nebulae accompanying PG1159 central stars. The study is based on the parallax and proper motion mea…
Problems for the WELS classification of planetary nebulae central stars: Self-consistent nebular modelling of four candidates
Hassan M. Basurah, Alaa Ali, Michael A. Dopita +3
We present integral field unit (IFU) spectroscopy and self-consistent photoionisation modelling for a sample of four southern Galactic planetary nebulae (PNe) with supposed weak em…
The physics and kinematics of the evolved, interacting planetary nebula PN G342.0-01.7
Alaa Ali, Morsi A. Amer, M. A. Dopita +2
Here we aim to study the physical and kinematical characteristics of the unstudied old planetary nebula (PN) PN G342.0-01.7, which shows evidence of interaction with its surroundin…
Galaxy emission line classification using 3D line ratio diagrams
Frédéric P. A. Vogt, Michael A. Dopita, Lisa J. Kewley +5
Two-dimensional (2D) line ratio diagnostic diagrams have become a key tool in understanding the excitation mechanisms of galaxies. The curves used to separate the different regions…
Spaxel Analysis: Probing the Physics of Star Formation in Ultraluminous Infrared Galaxies
Michael A. Dopita, Jeffrey Rich, Frédéric P. A. Vogt +5
This paper presents a detailed spectral pixel (spaxel) analysis of the ten Luminous Infrared Galaxies (LIRGs) previously observed with the Wide Field Spectrograph (WiFeS), an integ…