Results 1 to 10 of about 32,609 (221)

Deep MOS Spectroscopy of NGC 1316 Globular Clusters [PDF]

Galaxies, 2017
The giant elliptical galaxy NGC 1316 is the brightest galaxy in the Fornax cluster, and displays a number of morphological features that might be interpreted as an intermediate age merger remanent (∼3 Gyr).
Leandro A. Sesto, Favio R. Faifer, Juan C. Forte, Analía V. Smith Castelli   +3 more
doaj   +6 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

Galactic cannibalism and CDM density profiles [PDF]

, 2004
Using N-body simulations we show that the process of formation of the brightest cluster galaxy through dissipationless galactic cannibalism can affect the inner cluster dark matter density profile.
Barnes, Bartelmann, Bertin, Binney, Blumenthal, C. Nipoti, de Blok, Dehnen, Dehnen, Dubinski, El-Zant, Gavazzi, Ghigna, Gnedin, Hernquist, Jesseit, Kazantzidis, Kelson, Kochanek, L. Ciotti, Lewis, Londrillo, M. Stiavelli, Ma, Merritt, Mo, Moore, Natarajan, Navarro, Navarro, Nipoti, Nipoti, Nipoti, Ostriker, Power, Ricotti, Rosati, Salucci, Sand, Sand, Simon, Smith, Spergel, Springel, Subramanian, T. Treu, Treu, van den Bosch, Zhang   +48 more
core   +2 more sources

THE DETERMINATION OF THE MORPHOLOGICAL TYPES OF GALAXY CLUSTERS USING CLUSTER CARTOGRAPHY

Odessa Astronomical Publications, 2016
We discuss the possibility of using the Cluster Cartography set for the determined the morphological types of galaxy clusters. The applied morphological scheme was proposed by Panko (2013).
E. A. Panko, S. I. Emelyanov
doaj   +1 more source

CLASH-VLT: The Inner Slope of the MACS J1206.2-0847 Dark Matter Density Profile

The Astrophysical Journal, 2023
The inner slope ( γ _DM ) of the dark matter (DM) density profile of cosmological halos carries information about the properties of DM and/or baryonic processes affecting the halo gravitational potential.
Andrea Biviano, Lorenzo Pizzuti, Amata Mercurio, Barbara Sartoris, Piero Rosati, Stefano Ettori, Marisa Girardi, Claudio Grillo, Gabriel B. Caminha, Mario Nonino   +9 more
doaj   +1 more source

LINEAR SUBSTRUCTURES IN GALAXY CLUSTERS

Odessa Astronomical Publications, 2019
We propose detailed scheme that is describing the morphology of linear substructures in galaxy clusters. Our base morphological scheme di- vides galaxy clusters using numerical criteria according the parameters: concentration to the cluster center, the ...
E. Panko, V. Korshunov, S. Yemelianov, V. Zabolotnii   +3 more
doaj   +1 more source

MORPHOLOGICAL TYPES OF 254 RICH PF GALAXY CLUSTERS

Odessa Astronomical Publications, 2014
We determined the morphological types for 254 rich galaxy clusters from the PF Catalogue of Galaxy Clusters and Groups. The data set contains the PF galaxy clusters, which have no ACO coinciding ones.
E. A. Panko, S. M. Andrievsky, A. V. Gotsulyak   +2 more
doaj   +1 more source

The JWST PEARLS View of the El Gordo Galaxy Cluster and of the Structure It Magnifies

The Astrophysical Journal, 2023
The massive galaxy cluster El Gordo ( z = 0.87) imprints multitudes of gravitationally lensed arcs onto James Webb Space Telescope Near-Infrared Camera (NIRCam) images.
Brenda L. Frye, Massimo Pascale, Nicholas Foo, Reagen Leimbach, Nikhil Garuda, Paulina Soto Robles, Jake Summers, Carlos Diaz, Patrick Kamieneski, Lukas J. Furtak, Seth H. Cohen, Jose Diego, Benjamin Beauchesne, Rogier A. Windhorst, S. P. Willner, Anton M. Koekemoer, Adi Zitrin, Gabriel Caminha, Karina I. Caputi, Dan Coe, Christopher J. Conselice, Liang Dai, Hervé Dole, Simon P. Driver, Norman A. Grogin, Kevin Harrington, Rolf A. Jansen, Jean-Paul Kneib, Matt Lehnert, James Lowenthal, Madeline A. Marshall, Felipe Menanteau, Belén Alcalde Pampliega, Nor Pirzkal, Mari Polletta, Johan Richard, Aaron Robotham, Russell E. Ryan Jr., Michael J. Rutkowski, Christóbal Sifón, Scott Tompkins, Daniel Wang, Haojing Yan, Min S. Yun   +43 more
doaj   +1 more source

Mind the Gap: Tightening the Mass-Richness Relation with Magnitude Gaps [PDF]

, 2013
We investigate the potential to improve optical tracers of cluster mass by exploiting measurements of the magnitude gap, m12, defined as the difference between the r-band absolute magnitude of the two brightest cluster members.
Abazajian, Allen, Andreas A. Berlind, Andrew P. Hearin, Andrew R. Zentner, Becker, Behroozi, Berlind, Blanton, Conroy, D'Onghia, Gladders, Hearin, Jeffrey A. Newman, Jones, Klypin, Koester, Kravtsov, Newman, Paranjape, Proctor, Reyes, Riebe, Rozo, Rozo, Rykoff, Skibba, Tinker, Trujillo-Gomez, Watson, Weinberg, Wu, Yang, Zentner   +33 more
core   +1 more source

THE ELLIPTICITIES OF GALAXIES IN GALAXY CLUSTERS OF DIFFERENT MORPHOLOGICAL TYPE

Odessa Astronomical Publications, 2014
The distribution of galaxy ellipticities was analyzed for 207 rich PF galaxy clusters found in the Munster Red Sky Survey Galaxy Catalogue. Clusters with BM types from a comparison with the ACO catalogue were also classified on the new scheme.
E. A. Panko, P. Flin
doaj   +1 more source