Results 61 to 70 of about 89,941 (303)

Precision Modeling of JWST's First Cluster Lens SMACS J0723.3–7327

open access: yesThe Astrophysical Journal, 2023
Exploiting the fundamentally achromatic nature of gravitational lensing, we present a lens model for the massive galaxy cluster SMACS J0723.3−7323 (SMACS J0723; z = 0.388) that significantly improves upon earlier work.
Guillaume Mahler   +14 more
doaj   +1 more source

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

open access: yes, 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   +60 more
core   +2 more sources

A 1010 SOLAR MASS FLOW OF MOLECULAR GAS IN THE A1835 BRIGHTEST CLUSTER GALAXY [PDF]

open access: yes, 2013
We report ALMA Early Science observations of the A1835 brightest cluster galaxy (BCG) in the CO (3–2) and CO (1–0) emission lines. We detect 5 × 1010 M☉ of molecular gas within 10 kpc of the BCG. Its ensemble velocity profile width of ∼130 km s−1 FWHM is
B. McNamara   +19 more
semanticscholar   +1 more source

A NOVEL APPROACH TO CONSTRAIN THE MASS RATIO OF MINOR MERGERS IN ELLIPTICAL GALAXIES: APPLICATION TO NGC 4889, THE BRIGHTEST CLUSTER GALAXY IN COMA [PDF]

open access: yesAstrophysical Journal, 2013
Minor mergers are thought to be important for the buildup and structural evolution of massive elliptical galaxies. In this work, we report the discovery of a system of four shell features in NGC 4889, one of the brightest members of the Coma cluster ...
M. Gu   +9 more
semanticscholar   +1 more source

A New Galaxy Cluster Merger Capable of Probing Dark Matter: A56

open access: yesThe Astrophysical Journal, 2023
We report the discovery of a binary galaxy cluster merger via a search of the redMaPPer optical cluster catalog, with a projected separation of 535 kpc between the brightest cluster galaxies (BCGs).
David Wittman   +5 more
doaj   +1 more source

MASSIVE MOLECULAR GAS FLOWS IN THE A1664 BRIGHTEST CLUSTER GALAXY [PDF]

open access: yes, 2013
We report ALMA Early Science CO(1–0) and CO(3–2) observations of the brightest cluster galaxy (BCG) in A1664. The BCG contains 1.1 × 1010 M☉ of molecular gas divided roughly equally between two distinct velocity systems: one from −250 to +250 km s−1 ...
H. Russell   +18 more
semanticscholar   +1 more source

GALAXY CLUSTERS AT HIGH REDSHIFT AND EVOLUTION OF BRIGHTEST CLUSTER GALAXIES [PDF]

open access: yesThe Astrophysical Journal, 2011
10 pages, 14 figures, 2 tables; added reference, corrected typos; Table 2 is available at http://zmtt.bao.ac.cn/wzl/CV_wen ...
Jin-Lin Han, Z. L. Wen
openaire   +4 more sources

Order statistics of the early-type galaxy luminosity function [PDF]

open access: yes, 2011
We apply order statistics (OS) to the bright end ($M_r < -22$) of the luminosity distribution of early-type galaxies spectroscopically identified in the SDSS DR7 catalog.
Abazajian   +50 more
core   +2 more sources

Investigating the M GCS–M h Relation in the Most Massive Galaxies

open access: yesThe Astrophysical Journal, 2023
The relation between the total mass contained in the globular clusters of a galaxy and the mass of its dark-matter halo has been found observationally to be nearly linear over five decades of mass.
Veronika Dornan, William E. Harris
doaj   +1 more source

PS1-12sk IS A PECULIAR SUPERNOVA FROM A He-RICH PROGENITOR SYSTEM IN A BRIGHTEST CLUSTER GALAXY ENVIRONMENT [PDF]

open access: yes, 2013
We report on our discovery and observations of the Pan-STARRS1 supernova (SN) PS1-12sk, a transient with properties that indicate atypical star formation in its host galaxy cluster or pose a challenge to popular progenitor system models for this class of
N. Sanders   +31 more
semanticscholar   +1 more source

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