Results 11 to 20 of about 1,986 (217)

Brightest cluster galaxies as probes of galaxy formation [PDF]

, 2016
Brightest group and cluster galaxies are the most massive galaxies in the Universe and reside at the centres of galaxy clusters. These galaxies push galaxy formation and evolution models to their limits, providing a strong test to our current paradigm of galaxy formation.
Paola Cecilia Oliva-Altamirano (19117903)
openaire   +2 more sources

A ¹³CO Detection in a Brightest Cluster Galaxy [PDF]

The Astrophysical Journal, 2017
Abstract We present ALMA Cycle 4 observations of CO(1-0), CO(3-2), and 13CO(3-2) line emission in the brightest cluster galaxy (BCG) of RXJ0821+0752. This is one of the first detections of 13CO line emission in a galaxy cluster. Half of the CO(3-2) line emission originates from two clumps of molecular gas that are spatially offset from ...
Vantyghem, A., Mcnamara, B., Edge, A., Combes, F., Russell, H., Fabian, A., Hogan, M., Mcdonald, M., Nulsen, P., Salomé, P.   +9 more
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The Brightest UV-selected Galaxies in Protoclusters at z ∼ 4: Ancestors of Brightest Cluster Galaxies? [PDF]

The Astrophysical Journal, 2019
Abstract We present the results of a survey of the brightest UV-selected galaxies in protoclusters. These proto-brightest cluster galaxy (proto-BCG) candidates are drawn from 179 overdense regions of g-dropout galaxies at z ∼ 4 from the Hyper Suprime-Cam Subaru Strategic Program identified previously as good protocluster candidates. This
Kei Ito, Nobunari Kashikawa, Jun Toshikawa, Roderik Overzier, Masayuki Tanaka, Mariko Kubo, Takatoshi Shibuya, Shogo Ishikawa, Masafusa Onoue, Hisakazu Uchiyama, Yongming Liang, Ryo Higuchi, Crystal L. Martin, Chien-Hsiu Lee, Yutaka Komiyama, Song Huang   +15 more
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A detection of wobbling brightest cluster galaxies within massive galaxy clusters [PDF]

Monthly Notices of the Royal Astronomical Society, 2017
A striking signal of dark matter beyond the standard model is the existence of cores in the centre of galaxy clusters. Recent simulations predict that a Brightest Cluster Galaxy (BCG) inside a cored galaxy cluster will exhibit residual wobbling due to previous major mergers, long after the relaxation of the overall cluster.
Harvey, David, Courbin, F., Kneib, J.P., Mccarthy, Ian G.   +3 more
core   +7 more sources

Brightest Cluster Galaxy Offsets in Cold Dark Matter [PDF]

The Open Journal of Astrophysics
The distribution of offsets between the brightest cluster galaxies of galaxy clusters and the centroid of their dark matter distributions is a promising probe of the underlying dark matter physics.
Cian Roche, Michael McDonald, Josh Borrow, Mark Vogelsberger, Xuejian Shen, Volker Springel, Lars Hernquist, Ruediger Pakmor, Sownak Bose, Rahul Kannan   +9 more
doaj   +3 more sources

LoVoCCS. II. Weak Lensing Mass Distributions, Red-sequence Galaxy Distributions, and Their Alignment with the Brightest Cluster Galaxy in 58 Nearby X-Ray-luminous Galaxy Clusters [PDF]

The Astrophysical Journal
The Local Volume Complete Cluster Survey is an ongoing program to observe nearly a hundred low-redshift X-ray-luminous galaxy clusters (redshifts 0.03 < z < 0.12 and X-ray luminosities in the 0.1–2.4 keV band L _X500c > 10 ^44 erg s ^−1 ) with the Dark ...
Shenming Fu, Ian Dell’Antonio, Zacharias Escalante, Jessica Nelson, Anthony Englert, Søren Helhoski, Rahul Shinde, Julia Brockland, Philip LaDuca, Christelyn Larkin, Lucca Paris, Shane Weiner, William K. Black, Ranga-Ram Chary, Douglas Clowe, M. C. Cooper, Megan Donahue, August Evrard, Mark Lacy, Tod Lauer, Binyang Liu, Jacqueline McCleary, Massimo Meneghetti, Hironao Miyatake, Mireia Montes, Priyamvada Natarajan, Michelle Ntampaka, Elena Pierpaoli, Marc Postman, Jubee Sohn, David Turner, Keiichi Umetsu, Yousuke Utsumi, Gillian Wilson   +33 more
doaj   +5 more sources

COSMIC: A Galaxy Cluster–Finding Algorithm Using Machine Learning [PDF]

The Astrophysical Journal Supplement Series
Building a comprehensive catalog of galaxy clusters is a fundamental task for studies on structure formation and galaxy evolution. In this paper, we present Cluster Optical Search using Machine Intelligence in Catalogs (COSMIC), an algorithm utilizing ...
Da-Chuan Tian, Yang Yang, Zhong-Lue Wen, Jun-Qing Xia   +3 more
doaj   +2 more sources

The Emergence of a Brightest Cluster Galaxy in a Protocluster Core at z = 2.24 [PDF]

The Astrophysical Journal
We report the detection of a pair of massive quiescent galaxies likely in the process of merging at the center of the spectroscopically confirmed, extremely massive protocluster BOSS1244 at z = 2.24 ± 0.02.
Dong Dong Shi, Xin Wang, Xian Zhong Zheng, Zheng Cai, Xiaohui Fan, Fuyan Bian, Harry I. Teplitz   +6 more
doaj   +2 more sources

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
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Brightest cluster galaxies: the centre can(not?) hold [PDF]

Monthly Notices of the Royal Astronomical Society, 2020
ABSTRACT We explore the persistence of the alignment of brightest cluster galaxies (BCGs) with their local environment. We find that a significant fraction of BCGs do not coincide with the centroid of the X-ray gas distribution and/or show peculiar velocities (they are not at rest with respect to the cluster mean).
Roberto De Propris, Michael J West, Felipe Andrade-Santos, Cinthia Ragone-Figueroa, Elena Rasia, William Forman, Christine Jones, Rain Kipper, Stefano Borgani, Diego García Lambas, Elena A Romashkova, Kishore C Patra   +11 more
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