Results 41 to 50 of about 87,085 (268)

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

Brightest Cluster Galaxy Profile Shapes [PDF]

The Astrophysical Journal, 1996
To appear in Ap.J., 16 ...
Graham, Alister, Lauer, Tod R, Colless, Matthew, Postman, Marc   +3 more
openaire   +4 more sources

Clocking the formation of today’s largest galaxies: wide field integral spectroscopy of brightest cluster galaxies and their surroundings [PDF]

Monthly notices of the Royal Astronomical Society, 2019
The formation and evolution of local brightest cluster galaxies (BCGs) is investigated by determining the stellar populations and dynamics from the galaxy core, through the outskirts and into the intracluster light (ICL).
L. Edwards, Matthew Salinas, S. Stanley, Priscilla E. Holguin West, Isabella L. Trierweiler, H. Alpert, P. Coelho, Saisneha Koppaka, G. Tremblay, H. Martel, Yuan Li   +10 more
semanticscholar   +1 more source

Ellipticity of brightest cluster galaxies as tracer of halo orientation and weak-lensing mass bias [PDF]

Monthly notices of the Royal Astronomical Society, 2019
Weak-lensing measurements of the masses of galaxy clusters are commonly based on the assumption of spherically symmetric density profiles. Yet, the cold dark matter model predicts the shapes of dark matter haloes to be triaxial.
R. Herbonnet, A. von der Linden, S. Allen, A. Mantz, Pranati Modumudi, R. Morris, P. Kelly   +6 more
semanticscholar   +1 more source

Intrinsic Shapes of Brightest Cluster Galaxies

The Astrophysical Journal, 2022
Abstract We discuss the statistical distribution of galaxy shapes and viewing angles under the assumption of triaxiality by deprojecting observed surface brightness profiles of 56 brightest cluster galaxies (BCGs) coming from a recently published large deep-photometry sample.
Stefano de Nicola, Roberto P. Saglia, Jens Thomas, Claudia Pulsoni, Matthias Kluge, Ralf Bender, Lucas M. Valenzuela, Rhea-Silvia Remus   +7 more
openaire   +2 more sources

The XMM Cluster Survey: The Stellar Mass Assembly of Fossil Galaxies [PDF]

, 2012
This paper presents both the result of a search for fossil systems (FSs) within the XMM Cluster Survey and the Sloan Digital Sky Survey and the results of a study of the stellar mass assembly and stellar populations of their fossil galaxies. In total, 17
A. Kathy Romer, Andrew R. Liddle, Ben Hoyle, Bernardi, Blanton, Cavaliere, Charlot, Chris A. Collins, Christopher J. Miller, Conroy, Craig D. Harrison, Cypriano, D'Onghia, Diego Capozzi, Dubinski, E. J. Lloyd-Davies, Feldmeier, Ferland, Gastaldello, Herberich, John P. Stott, Johnston, Joseph W. Richards, Koester, La Barbera, Lauer, Lavery, Lin, Lotz, Martin Sahlén, Matt Hilton, Maughan, Mehrtens, Mendes de Oliveira, Mendes de Oliveira, Miller, Miller, Milosavljević, Mulchaey, Murante, Nicola Mehrtens, Patton, Paul-James Deadman, Pedro T. P. Viana, Quillen, Richardson, Romer, Rudick, Rudick, Rudick, Ruszkowski, S. Adam Stanford, Salim, Santos, Stott, Tremonti, Voevodkin, Voevodkin, White, Wu, York   +60 more
core   +2 more sources

Brightest Cluster Galaxy Alignments in Merging Clusters [PDF]

The Astrophysical Journal, 2019
Abstract The orientations of brightest cluster galaxies (BCGs) and their host clusters tend to be aligned, but the mechanism driving this is not clear. To probe the role of cluster mergers in this process, we quantify alignments of 38 BCGs in 22 clusters undergoing major mergers (up to ∼1 Gyr after first pericenter).
David Wittman, Drake Foote, Nathan Golovich   +2 more
openaire   +4 more sources

The Principal Axis of the Virgo Cluster [PDF]

, 2000
Using accurate distances to individual Virgo cluster galaxies obtained by the method of Surface Brightness Fluctuations, we show that Virgo's brightest ellipticals have a remarkably collinear arrangement in three dimensions.
Binggeli B., John P. Blakeslee, Michael J. West, Schindler S., Tully R. B., West M. J., Young C. K.   +6 more
core   +3 more sources

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

The Initial Mass Function and Other Stellar Properties Across the Core of the Hydra I Cluster

The Astrophysical Journal, 2023
The Hydra I cluster offers an excellent opportunity to study and compare the relic old stellar populations in the core of its two brightest galaxies. In addition, the differing kinematics of the two galaxies allows a test of the local validity of general
Ilaria Lonoce, W. L. Freedman, A. Feldmeier-Krause   +2 more
doaj   +1 more source