3 papers
astro-ph.SR2020
Prediction of the Atmospheric Fundamental Parameters from Stellar Spectra Using Artificial Neural Network
Y. A. Azzam, M. I. Nouh, A. A. Shaker
Innovation in the ground and space-based instruments has taken us into a new age of spectroscopy, in which a large amount of stellar content is becoming available. So, automatic cl…
astro-ph.HE2018
X-ray warm absorber variability of the Seyfert Galaxy Arakelian 564
B. Korany, M. I. Nouh
The aim of this paper is to study the variability of the warm absorber "clouds of ionised gas within AGN", for the Seyfert 1 galaxies Arakelian 564. The X-ray spectra for four XMM-…
astro-ph.SR2015
Kinematics and Velocity Ellipsoid of the Solar Neighborhood White Dwarfs
W. H. Elsanhoury, M. I. Nouh, H. I. Abdel-Rahman
To determine the velocity ellipsoid of the solar neighborhood white dwarfs, we use the space velocity components of stars. Two samples of white dwarfs are used, 20 pc and 25 pc sam…