Publications (7)
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…
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…
BeyondCT: A deep learning model for predicting pulmonary function from chest CT scans
Kaiwen Geng, Zhiyi Shi, Xiaoyan Zhao +4
Abstract Background: Pulmonary function tests (PFTs) and computed tomography (CT) imaging are vital in diagnosing, managing, and monitoring lung diseases. A common issue in practic…
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 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…
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…
Space-Time Elastic Metamaterials for Zero-Frequency and Zero-Wavenumber Bandgaps
Brahim Lemkalli, Alaa Ali, Qingxiang Ji +5
We create wave-matter space-time metamaterials using optical trapping forces to manipulate mass-spring chains and create zero-frequency and zero-wavenumber band gaps: the bosonic n…