Results 91 to 100 of about 29,686 (260)

The Formation of the Brightest Cluster Galaxy and Intracluster Light in Cosmological N-body Simulations with the Galaxy Replacement Technique

The Astrophysical Journal, 2023
We investigate the formation channels of the intracluster light (ICL) and the brightest cluster galaxy (BCG) in clusters at z = 0. For this, we perform multi-resolution cosmological N -body simulations using the “galaxy replacement technique.” We study ...
Kyungwon Chun, Jihye Shin, Rory Smith, Jongwan Ko, Jaewon Yoo   +4 more
doaj   +1 more source

Two Micron‐Size Dark Dimensions

Fortschritte der Physik, Volume 73, Issue 8, August 2025.
Abstract Two extra dimensions of micron scale might simultaneously address the gauge and cosmological hierarchy problems. In this paper various observational bounds in scenarios with one and two large extra dimensions are examined, to see if they are compatible with the micron scale.
Luis A. Anchordoqui, Ignatios Antoniadis, Dieter Lüst   +2 more
wiley   +1 more source

Deep MOS Spectroscopy of NGC 1316 Globular Clusters

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   +1 more source

Testing the Collisionless Nature of Dark Matter with the Radial Acceleration Relation in Galaxy Clusters

The Astrophysical Journal, 2023
The radial acceleration relation (RAR) represents a tight empirical relation between the inferred total and baryonic centripetal accelerations, g _tot = GM _tot (< r )/ r ^2 and g _bar = GM _bar (< r )/ r ^2 , observed in galaxies and galaxy clusters ...
Sut-Ieng Tam, Keiichi Umetsu, Andrew Robertson, Ian G. McCarthy   +3 more
doaj   +1 more source

The ACS Nearby Galaxy Survey Treasury. X. Quantifying the Star Cluster Formation Efficiency of Nearby Dwarf Galaxies

, 2012
We study the relationship between the field star formation and cluster formation properties in a large sample of nearby dwarf galaxies. We use optical data from the Hubble Space Telescope and from ground-based telescopes to derive the ages and masses of ...
Anil C. Seth, Bastian, Bertelli, Billett, Boselli, Bressan, Bressert, Buat, Chandar, Chandar, Chandar, Charles W. Engelbracht, da Silva, Dalcanton, Dale, Dale, Daniel A. Dale, Daniel R. Weisz, David O. Cook, Dohm-Palmer, Evans, Fall, Fall, Fioc, Fouesneau, Fumagalli, Gieles, Girardi, Goddard, Groenewegen, Hunter, Hunter, Hunter, Hénon, Julianne J. Dalcanton, Karachentsev, Kennicutt, Knut A. G. Olsen, Kroupa, L. Clifton Johnson, Larsen, Larsen, Lee, Lee, Leroy, Marble, Maíz Apellániz, McCrady, McQuinn, Meurer, Morgan Fouesneau, Moustakas, Muñoz-Mateos, Popescu, Porras, Schlegel, Weisz, Weisz, Weisz, Whitmore, Whitmore, Zhang   +61 more
core   +1 more source

Radio luminosity function of brightest cluster galaxies [PDF]

Monthly Notices of the Royal Astronomical Society, 2016
10 pages, 9 figures.
Jin-Lin Han, Z. L. Wen, Zhen Yuan
openaire   +3 more sources

O, Ne, Mg, and Fe Abundances in Hot X-Ray-emitting Halos of Galaxy Clusters, Groups, and Giant Early-type Galaxies with XMM-Newton RGS Spectroscopy

The Astrophysical Journal, 2023
Chemical elements in the hot medium permeating early-type galaxies, groups, and clusters make such objects an excellent laboratory for studying metal enrichment and cycling processes on the largest scales of the universe.
Kotaro Fukushima, Shogo B. Kobayashi, Kyoko Matsushita   +2 more
doaj   +1 more source

Deep Space Network Radio Science and Ground‐Based Planetary Radar in the Next Decade

Radio Science, Volume 60, Issue 7, July 2025.
Abstract The Deep Space Network (DSN) has been a core operational element of NASA's crewed and robotic exploration of the Solar System since the early 1960s. The primary role of the DSN has been to acquire telemetry and navigation data, but over the years, its radiometric and radar capabilities have expanded to form a system for obtaining unique ...
R. S. Park, J. E. Riedel, N. Rodriguez‐Alvarez, M. Brozovic, L. A. M. Benner, P. Vergados, D. Buccino, C. S. Jacobs, L. S. Locke, S. W. Asmar, R. Castano, T. J. W. Lazio, J. Jao, C. Lee   +13 more
wiley   +1 more source

Selecting Clusters and Protoclusters via Stellar Mass Density. I. Method and Tests on Mock HSC-SSP Catalogs

The Astrophysical Journal
We present an algorithm designed to identify galaxy (proto)clusters in wide-area photometric surveys by first selecting their dominant galaxy—i.e., the brightest cluster galaxy (BCG) or protoBCG—through the local stellar mass density traced by massive ...
Marcelo C. Vicentin, Pablo Araya-Araya, Laerte Sodré Jr., Michael A. Strauss   +3 more
doaj   +1 more source

Powerful Yet Lonely: Is 3C 297 a High-redshift Fossil Group?

The Astrophysical Journal Supplement Series, 2022
The environment of the high-redshift ( z = 1.408), powerful radio-loud galaxy 3C 297 has several distinctive features of a galaxy cluster. Among them, a characteristic halo of hot gas revealed by Chandra X-ray observations.
Valentina Missaglia, Juan P. Madrid, Mischa Schirmer, Francesco Massaro, Alberto Rodríguez-Ardila, Carlos J. Donzelli, Martell Valencia, Alessandro Paggi, Ralph P. Kraft, Chiara Stuardi, Belinda J. Wilkes   +10 more
doaj   +1 more source