125 citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Northern Border UniversitySA30 papers
- Centre National de la Recherche ScientifiqueFR16 papers
- Taibah UniversitySA16 papers
- Cairo UniversityEG12 papers
- Instituto de Astrofísica de AndalucíaES11 papers
- Université Paris CitéFR11 papers
- Astrophysique, Instrumentation et ModélisationFR10 papers
- Commissariat à l'Énergie Atomique et aux Énergies AlternativesFR10 papers
- Leibniz Institute for Astrophysics PotsdamDE10 papers
- Sorbonne UniversitéFR10 papers
- Astronomical ObservatoryRS9 papers
- CEA Paris-SaclayFR9 papers
39 papers · 1 filter
COSMOS-Web: Galaxy Size and Surface Brightness Evolution at Rest-Frame 1.22 m Since
Si-Yue Yu, Andreas L. Faisst, Taotao Fang +7
We present the evolution of galaxy size and surface brightness in the rest-frame band (1.22 m), tracing the stellar mass distribution, over , using a samp…
COSMOS-Web galaxy groups: Evolution of red sequence and quiescent galaxy fraction
Greta Toni, Matteo Maturi, Gianluca Castignani +33
We investigate the redshift and group richness dependence of the quiescent fraction and red-sequence (RS) parameters in COSMOS galaxy groups from z=0 to z=3.7. We analyzed the deep…
From the Densest Clusters to the Emptiest Voids: No Evidence For Environmental Effects on the Galaxy Size-Mass Relation at Low Redshift
Mohamed H. Abdullah, Nouran E. Abdelhamid, Rasha M. Samir +1
We present a comprehensive study of the galaxy size-stellar mass relation (SMR) at low redshift (z <= 0.125), using a large spectroscopic sample from the SDSS-DR13 survey. Our goal…
COSMOS Web: Morphological quenching and size-mass evolution of brightest group galaxies from z = 3.7
Ghassem Gozaliasl, Lilan Yang, Jeyhan Kartaltepe +47
We present a comprehensive study of the structural evolution of Brightest Group Galaxies (BGGs) from redshift to using the \textit{James Webb Space Telesc…
Study of Open Star Clusters Using the Gaia DR3: I- Poorly Studied King 2 and King 5
Aly Haroon, Waleed Elsanhoury, Essam Elkholy +2
In this study, we utilize photometric and kinematic data from \textit{Gaia} DR3 and the {\sc ASteCA} package to analyze the sparsely studied open clusters, King 2 and King 5. For K…
An in-depth analysis of the differentially expanding star cluster Stock 18 (Villafranca O-036) using Gaia DR3 and ground-based data
J. Maíz Apellániz, A. R. Youssef, M. S. El-Nawawy +4
(ABRIDGED) CONTEXT: The Villafranca project is combining Gaia data with ground-based surveys to analyze Galactic stellar groups with OB stars. AIMS: We want to analyze Stock 18 wit…
Open superclusters I: The most populated primordial groups of open clusters in the third quadrant of the Galactic disc
Juan Casado, Yasser Hendy
An open supercluster (OSC) is defined as a cluster of at least six open clusters (OCs) born from the same giant molecular cloud (GMC). We survey the recent catalogs of OCs based on…
Morphology driven evolution of barred galaxies in OMEGAWINGS Clusters
Amira A. Tawfeek, Bernardo Cervantes Sodi, Jacopo Fritz +6
We present a study of barred galaxies in the cluster environment, exploiting a sample of galaxies drawn from the extended WIde-field Nearby Galaxy-cluster Survey (OmegaWINGS) that…
The Uchuu-UniverseMachine dataset: Galaxies in and around Clusters
Han Aung, Daisuke Nagai, Anatoly Klypin +7
We present the public data release of the Uchuu-UM galaxy catalogues by applying the UniverseMachine algorithm to assign galaxies to the dark matter halos in the Uchuu -body cos…
The principal astrophysical parameters of the open clusters Gulliver 18 and Gulliver 58 determined using Gaia EDR3 data
Ashraf Tadross, Eslam Elhosseiny
A photometric and astrometric study of the two open star clusters Gulliver 18 and Gulliver 58 was carried out for the first time using the early third data release of the Gaia spac…
Spectroscopic Confirmation of a Protocluster at with a High Fraction of Quiescent Galaxies
Ian McConachie, Gillian Wilson, Ben Forrest +10
We report the discovery of MAGAZ3NE J095924+022537, a spectroscopically-confirmed protocluster at around a spectroscopically-confirmed -quiesc…
Kinematics And Ellipsoidal Motion Of The Mid To Late M-Type Stars
W. H. Elsanhoury, M. I. Nouh, Richard L. Branham +1
Truly, kinematics in the Solar neighborhood has provided important information both for the structure and for the evolution of the Galaxy since the early 20th century. The relation…
Possible Relations between Brightest Central Galaxies and Their Host Galaxies Clusters and Groups
R. M. Samir, A. A. Shaker
The r-band of the Sloan Digital Sky Survey (SDSS) for 17,924 brightest cluster galaxies (BCGs) in clusters and groups within 0.02 z 0.20 are used to study possible environmental re…
Methanol and water maser observations separate disc and outflow sources in IRAS 19410+2336
M. S. Darwish, K. A. Edris, A. M. S. Richards +4
We investigate the kinematics of high mass protostellar objects within the high mass star forming region IRAS 19410+2336. We performed high angular resolution observations of 6.7-G…
Gaia astrometric and photometric study of open clusters (Dolidze 18 & Ruprecht 70)
A. L. Tadross, Y. M. Hendy
Here, we conducted a photometric and astrometric study of two open stellar clusters Dolidze-18 and Ruprecht-70, which have not been photometrically studied before. The most importa…
Gravitational interaction signatures in isolated galaxy triplet systems: a photometric analysis
Amira A. Tawfeek, Kanak Saha, Kaustubh Vaghmare +7
Galaxy triplets are interesting laboratories where we can study the formation and the evolution of small and large systems of galaxies. This study aims to investigate signs of inte…
Photometric and kinematical analysis of Koposov 12 and Koposov 43 open clusters
W. H. Elsanhoury
We present a photometric and kinematical analysis of two and poorly studied open clusters; Koposov 12 (FSR 802) and Koposov 43 (FSR 848) by using cross-matched data from PPMXL and…
An investigation of open cluster Melotte 72 using Gaia DR2
Yasser Hendy, Ashraf Tadross
The estimation of the main parameters of star clusters is significant in astrophysical studies. The most important aspect of using the Gaia DR2 survey lies in the positions, parall…
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…
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…
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…
The kinematical and space structures of IC 2391 open cluster and moving group with Gaia-DR2
E. S. Postnikova, W. H. Elsanhoury, Devesh P. Sariya +3
The kinematical parameters, spatial shape and structure of the open cluster IC 2391 and the associated stellar stream are studied here using Gaia-DR2 (GDR2) astrometry data. The ap…
The Rest-frame -band Luminosity Function of Red Sequence Galaxies in Clusters at
Jeffrey C. C. Chan, Gillian Wilson, Gregory Rudnick +22
We present results on the rest-frame -band luminosity functions (LF) of red sequence galaxies in seven clusters at 1.0 < z < 1.3 from the Gemini Observations of Galaxies in Rich…
First space and kinematical analysis of newly discovered southern UFMGs clusters with Gaia
W. H. Elsanhoury
The work on the kinematical parameters and spatial shape structure have been performed with Gaia DR2 astrometry data of the new recently southern discovered open clusters; UFMG 1,…