output
19982026
most citedRate of Period Change as a Diagnostic of Cepheid Properties

125 citations

Showing 2020Show all

10 papers · 1 filter

astro-ph.GA2020★ 16 cited

Artificial Neural Network Modeling of the Conformable Fractional Isothermal Gas Spheres

Yosry A. Azzam, Emad A. -B. Abdel-Salam, Mohamed I. Nouh

The isothermal gas sphere is a particular type of Lane-Emden equation and is used widely to model many problems in astrophysics like stars, star clusters, and the formation of gala…

astro-ph.GA2020★ 6 cited

Characteristics of the open star cluster Kronberger 60 using Gaia DR2

A. L. Tadross, Y. M. Hendy

The estimation of the main parameters of star clusters is a very important target in astrophysical studies. Many of the open clusters listed in known catalogs have insuffcient astr…

astro-ph.CO2020★ 6 cited

Multiwavelength classification of X-ray selected galaxy cluster candidates using convolutional neural networks

Matej Kosiba, Maggie Lieu, Bruno Altieri +15

Galaxy clusters appear as extended sources in XMM-Newton images, but not all extended sources are clusters. So, their proper classification requires visual inspection with optical…

astro-ph.SR2020★ 1 cited

Orbits and Individual Masses of Some Visual Binaries

Essam A. Elkholy, Waleed H. Elsanhoury, Mohamed I. Nouh

The orbits of visual binary systems still attract many of the working groups in astronomy. These orbits are the most important and reliable source of the stellar masse. In the pres…

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.GA2020★ 29 cited

An investigation of poorly studied open cluster NGC 4337 using multi-color photometric and Gaia DR2 astrometric data

D. Bisht, W. H. Elsanhoury, Qingfeng Zhu +5

We present a comprehensive analysis (photometric and kinematical) of poorly studied open cluster NGC 4337 using 2MASS, WISE, APASS, and Gaia~DR2 database. By determining the member…

physics.comp-ph2020★ 12 cited

Conformable Fractional Isothermal Gas Spheres

Eltayeb A. Yousif, Ahmed M. A. Adam, Abaker A. Hassaballa1 +1

The isothermal gas sphere is well known as a powerful tool to model many problems in astrophysics, physics, chemistry, and engineering. This singular differential equation has not…

nlin.CD2020★ 53 cited

The analysis of restricted five-body problem within frame of variable mass

Md SanamSuraj, Elbaz I. Abouelmagd, Rajiv Aggarwal +1

In the framework of restricted five bodies problem, the existence and stability of the libration points are explored and analysed numerically, under the effect of non--isotropic ma…

astro-ph.CO2020★ 8 cited

X-ray properties of X-CLASS-redMaPPer galaxy cluster sample: The luminosity-temperature relation

Mona Molham, Nicolas Clerc, Ali Takey +7

This paper presents results of a spectroscopic analysis of the X-CLASS-redMaPPer (XC1-RM) galaxy cluster sample. X-CLASS is a serendipitous search for clusters in the X-ray waveban…

astro-ph.CO2020★ 52 cited

Cosmological Constraint on and from Cluster Abundances using the Optical-Spectroscopic SDSS Catalog

Mohamed H. Abdullah, Anatoly Klypin, Gillian Wilson

We derive cosmological constraints on the matter density, \om, and the amplitude of fluctuations, \sig, using , a catalog of 1800 galaxy clusters we identified…