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
20 papers · 1 filter
Identification of low redshift groups and clusters of galaxies in the X-CLASS survey and the X-ray luminosity-temperature relation
Q. Moysan, F. Sarron, N. Clerc +16
Properties of the hot intracluster and intragroup medium are mostly set by the underlying gravitational potential well, although complex astrophysical processes at play during thei…
The Correlation Function and Detection of Baryon Acoustic Oscillation Peak from the Spectroscopic SDSS GalWCat Galaxy Cluster Catalogue
Mohamed H. Abdullah, Anatoly Klypin, Francisco Prada +3
We measure the two point correlation function (CF) of 1357 galaxy clusters with a mass of ~\hm~and at a redshift of . This work differs f…
Constraining Cosmological Parameters using the Cluster Mass-Richness Relation
Mohamed H. Abdullah, Gillian Wilson, Anatoly Klypin +1
The cluster mass-richness relation (MRR) is an observationally efficient and potentially powerful cosmological tool for constraining the mean matter density of the universe and the…
The X-CLASS survey: A catalogue of 1646 X-ray-selected galaxy clusters up to z1.5
E. Koulouridis, N. Clerc, T. Sadibekova +25
Cosmological probes based on galaxy clusters rely on cluster number counts and large-scale structure information. X-ray cluster surveys are well suited for this purpose, since they…
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…
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…
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…
GalWeight Application: A publicly-available catalog of dynamical parameters of 1,800 galaxy clusters from SDSS-DR13, ()
Mohamed H. Abdullah, Gillian Wilson, Anatoly Klypin +3
Utilizing the SDSS-DR13 spectroscopic dataset, we create a new publicly-available catalog of 1,800 galaxy clusters (GalWeight cluster catalog, ) and a correspon…
GalWeight: A New and Effective Weighting Technique for Determining Galaxy Cluster and Group Membership
Mohamed H. Abdullah, Gillian Wilson, Anatoly Klypin
We introduce GalWeight, a new technique for assigning galaxy cluster membership. This technique is specifically designed to simultaneously maximize the number of bona fide cluster…
Distant clusters of galaxies in the 2XMM/SDSS footprint: follow-up observations with the LBT
Andreas Rabitz, Georg Lamer, Axel Schwope +1
Context: Galaxy clusters at high redshift are important to test cosmological models and models for the growth of structure. They are difficult to find in wide-angle optical surveys…
The 3XMM/SDSS Stripe 82 Galaxy Cluster Survey: Cluster catalogue and discovery of two merging cluster candidates
Ali Takey, Florence Durret, Eman A. Mahmoud +1
We present a galaxy cluster survey based on XMM-Newton observations that are located in Stripe 82 of the Sloan Digital Sky Survey (SDSS). The survey covers an area of 11.25 deg…
Galaxy clusters in the SDSS Stripe 82 based on galaxy photometric redshifts
Florence Durret, Christophe Adami, Emmanuel Bertin +8
Based on a recent photometric redshift galaxy catalogue, we have searched for galaxy clusters in the Stripe~82 region of the Sloan Digital Sky Survey by applying the Adami & MAzure…
Distortion of Infall Regions in Redshift Space-I
Mohamed H. Abdullah, Elizabeth A. Praton, Gamal B. Ali
We show that spherical infall models (SIMs) can better describe some galaxy clusters in redshift slice space than in traditional axially-convolved projection space. This is because…
Studying the Dynamical Properties of 20 Nearby Galaxy Clusters
Mohamed H. Abdullah, Gamal B. Ali, H. A. Ismail +1
Using SDSS-DR7, we construct a sample of 42382 galaxies with redshifts in the region of 20 galaxy clusters. Using two successive iterative methods, the adaptive kernel method and t…
The 2XMMi/SDSS Galaxy Cluster Survey. III. Clusters associated with spectroscopically targeted luminous red galaxies in SDSS-DR10
A. Takey, A. Schwope, G. Lamer
We present a sample of 383 X-ray selected galaxy groups and clusters with spectroscopic redshift measurements (up to z ~ 0.79) from the 2XMMi/SDSS Galaxy Cluster Survey. The X-ray…
The 2XMMi/SDSS Galaxy Cluster Survey. II. The optically confirmed cluster sample and the L_X-T relation
A. Takey, A. Schwope, G Lamer
We compile a sample of X-ray-selected galaxy groups and clusters from the XMM-Newton serendipitous source catalogue (2XMMi-DR3) with optical confirmation and redshift measurement f…
Distant galaxy clusters in a deep XMM-Newton field within the CFTHLS D4
Arjen de Hoon, Georg Lamer, Axel Schwope +15
The XMM-Newton Distant Cluster Project (XDCP) aims at the identification of a well defined sample of X-ray selected clusters of galaxies at redshifts z>0.8. We present a catalogue…
Statistics of interacting galaxies at z~0.7
V. P. Reshetnikov, Y. H. Mohamed
We present the results of our analysis of the frequencies of galaxies with tidal tails and M51-type galaxies in several deep fields of the Hubble Space Telescope (HDF-N, HDF-S, HUD…
The 2XMMi/SDSS Galaxy Cluster Survey I. The first cluster sample and X-ray luminosity-temperature relation
A. Takey, A. Schwope, G. Lamer
We present a catalogue of X-ray selected galaxy clusters and groups as a first release of the 2XMMi/SDSS Galaxy Cluster Survey. The survey is a search for galaxy clusters detected…
On the characteristics of tidal structures of interacting galaxies
Y. H. Mohamed, V. P. Reshetnikov, N. Ya. Sotnikova
We present the results of our analysis of the geometrical tidal tail characteristics for nearby and distant interacting galaxies. The sample includes more than two hundred nearby g…