Results 31 to 40 of about 150,051 (304)

Low X-Ray Luminosity Galaxy Clusters: Main goals, sample selection, photometric and spectroscopic observations [PDF]

, 2016
We present the study of nineteen low X-ray luminosity galaxy clusters (L$_X \sim$ 0.5--45 $\times$ $10^{43}$ erg s$^{-1}$), selected from the ROSAT Position Sensitive Proportional Counters (PSPC) Pointed Observations (Vikhlinin et al.
Alonso, M. V., Astudillo, J. M., Carrasco, E. R., Castellón, J. L. Nilo, Cuevas, H., Jaque, M., Lambas, D. García, Mill, A. L. O', Ramos, F., Ramírez, A., Ulloa, N., Valotto, Carlos, Órdenes, Y.   +12 more
core   +3 more sources

Supernovae in Galaxy Clusters [PDF]

International Astronomical Union Colloquium, 2005
SummaryWe present the results of several surveys for supernovae (SNe) in galaxy clusters. SNe discovered in deep, archival HST images were used to measure the cluster SN Ia rate to z = 1. A search for SNe in nearby (0.06 ≤ z ≤ 0.2) Abell galaxy clusters yielded 15 SNe, 12 of which were spectroscopically confirmed.
Alexei V. Filippenko, Keren Sharon, Avishay Gal-Yam, Dan Maoz, Puragra Guhathakurta, Francisco Prada   +5 more
openaire   +4 more sources

ФОРМЫ ТРЕХКОМПОНЕНТНЫХ СВЕРХСКОПЛЕНИЙ ГАЛАКТИК

Odessa Astronomical Publications, 2011
We analyzed the shapes of galaxy superclusters, contains only 3 galaxy clusters. The superclusters were found using PF Catalogue Galaxy Clusters and Groups covering 5000 square degrees as input data.
Е. А. Панько
doaj   +1 more source

3D-Matched-Filter Galaxy Cluster Finder I: Selection Functions and CFHTLS Deep Clusters [PDF]

, 2009
We present an optimised galaxy cluster finder, 3D-Matched-Filter (3D-MF), which utilises galaxy cluster radial profiles, luminosity functions and redshift information to detect galaxy clusters in optical surveys.
Adami, Battye, Benoist, Benítez, C. Heymans, Cohn, Davis, De Lucia, Dietrich, Dressler, Erben, Gilbank, Gladders, Grove, Grove, H. Hildebrandt, Hansen, Hilbert, Hildebrandt, Hoekstra, J. P. Dietrich, Kepner, Kitzbichler, Kochanek, Kodama, Koester, L. Van Waerbeke, Le Fèvre, Li, Lilly, Lopes, Lu, M. Milkeraitis, Menanteau, Motl, Olsen, Olsen, Olsen, Olsen, Olsen, Olsen, Popesso, Postman, Ramella, Sealfon, Smith, Soneira, Springel, Stark, T. Erben, Thanjavur, Van Breukelen, Van Waerbeke, White   +53 more
core   +4 more sources

On the Origin and Evolution of the Intra-Cluster Light: A Brief Review of the Most Recent Developments

Galaxies, 2021
Not all the light in galaxy groups and clusters comes from stars that are bound to galaxies. A significant fraction of it constitutes the so-called intracluster or diffuse light (ICL), a low surface brightness component of groups/clusters generally found
Emanuele Contini
doaj   +1 more source

Weak lensing by triaxial galaxy clusters [PDF]

, 2011
Weak gravitational lensing studies of galaxy clusters often assume a spherical cluster model to simplify the analysis, but some recent studies have suggested this simplifying assumption may result in large biases in estimated cluster masses and ...
Bartelmann, Battye, Bett, Bridle, Corless, Corless, Evrard, F. Feroz, Feroz, Feroz, Feroz, Fort, Gavazzi, Gavazzi, Hobson, Hoekstra, Hurley-Walker, Jenkins, Jing, Kneib, Liddle, Limousin, M. P. Hobson, Marshall, Massey, Massey, Navarro, Oguri, Oguri, Press, Schramm, Schramm, Seitz, Shaw, Sheth, Trotta, White   +36 more
core   +1 more source

Quenched Galaxies in Clusters of Galaxies and Their Outskirts [PDF]

Astrophysical Bulletin, 2020
Based on the SDSS data, the properties of galaxies with quenched star formation (QGs) within the "splashback"-radius of galaxy clusters $R_{\rm sp}$ and beyond it have been studied.
F. G. Kopylova, Alexander I. Kopylov
openaire   +3 more sources

ON THE DETERMINATION OF GALAXY STRUCTURE ELLIPTICITY

Odessa Astronomical Publications, 2007
We discuss factors influencing the determination of the observed shape of galaxy clusters when the covariance ellipse method is involved. The analysis of 377 Abell clusters show that at greater distances from the cluster center the ellipticity is rather ...
M. Biernacka, P. Flin, T. Juszczyk, E. Panko   +3 more
doaj   +1 more source

Evolution of galaxy clustering [PDF]

Monthly Notices of the Royal Astronomical Society, 1998
Four pages, 1 figure.
openaire   +4 more sources

Galaxy Superclusters Detected in the Modified PF-Catalog Using the FOF Method

Open Astronomy, 2011
The Modified Catalog of Galaxy Clusters and Groups (Panko & Flin 2006, PF), covering an area of 5000 square degrees in the southern sky, was used as the input for the search of galaxy superclusters.
Panko E.
doaj   +1 more source