scholarly journals MACS: A Quest for the Most Massive Galaxy Clusters in the Universe

2001 ◽  
Vol 553 (2) ◽  
pp. 668-676 ◽  
Author(s):  
H. Ebeling ◽  
A. C. Edge ◽  
J. P. Henry
Keyword(s):  
Galaxy Clusters ◽  
The Universe ◽  
Massive Galaxy

scholarly journals GLASS: The Grism Lens-Amplified Survey From Space. HST Grism Spectroscopy of the Frontier Fields

2015 ◽  
Vol 11 (A29B) ◽  
pp. 768-771
Author(s):  
Kasper B. Schmidt ◽  
Keyword(s):  
Galaxy Clusters ◽  
Galaxy Evolution ◽  
Spatial Resolution ◽  
Near Infrared ◽  
Lens Modeling ◽  
Cluster Cores ◽  
The Universe ◽  
Massive Galaxy ◽  
Environmental Dependence

AbstractThe Grism Lens-Amplified Survey From Space (GLASS) is a 140 orbit spectroscopic survey of 10 massive galaxy clusters, including the six Hubble Frontier Fields. GLASS has observed the cluster cores with the HST-WFC3 G102 and G141 grisms providing a wide wavelength coverage in the near-infrared from roughly 0.8–1.7μm. The parallel fields were observed through the optical ACS G800L grism. Taking advantage of the lensing magnification of the clusters, GLASS reaches intrinsic spectroscopic 1σ flux limits of roughly 10-18erg/s/cm2 and improved spatial resolution for lensed sources behind the clusters. These features are particularly useful for the three main science drivers of GLASS which are, I) exploring the universe at the epoch of reionization, II) describe how metals cycle in and out of galaxies, and III) asses the environmental dependence of galaxy evolution. The former two benefit highly from the improved depth and increased resolution provided by the cluster lensing. Apart from the main science drivers, a slew of ancillary science has been enabled by the survey, including improving cluster lens modeling and searches for supernovae. Here we present the survey and the GLASS data releases, which are continuously being made available to the community through https://archive.stsci.edu/prepds/glass/. For further information we refer to Schmidt et al. (2014), Treu et al. (2015), and http://glass.physics.ucsb.edu.

scholarly journals The Most Massive Black Holes in the Universe: Effects of Mergers in Massive Galaxy Clusters

2007 ◽  
Vol 667 (2) ◽  
pp. 813-825 ◽  
Author(s):  
Jaiyul Yoo ◽  
Jordi Miralda‐Escude ◽  
David H. Weinberg ◽  
Zheng Zheng ◽  
Christopher W. Morgan
Keyword(s):  
Black Holes ◽  
Galaxy Clusters ◽  
Massive Black Holes ◽  
The Universe ◽  
Massive Galaxy

scholarly journals The growth of the red-sequence in clusters since ≃1

2009 ◽  
Vol 5 (H15) ◽  
pp. 88-88
Author(s):  
Roberto P. Muñoz ◽  
L. F. Barrientos ◽  
B. P. Koester ◽  
D. G. Gilbank ◽  
M. D. Gladders ◽  
...  
Keyword(s):  
Star Formation ◽  
Galaxy Clusters ◽  
Evolutionary Model ◽  
Large Ensemble ◽  
Cluster Galaxies ◽  
Nir Imaging ◽  
Measured Change ◽  
First Time ◽  
The Universe ◽  
Red Sequence

AbstractWe use deep nIR imaging of 15 galaxy clusters at z ≃ 1 to study the build-up of the red-sequence in rich clusters since the Universe was half its present age. We measured, for the first time, the luminous-to-faint ratio of red-sequence galaxies at z=1 from a large ensemble of clusters, and found an increase of 100% in the ratio of luminous-to-faint red-sequence galaxies from z=0.45 to 1.0. The measured change in this ratio as function of redshift is well-reproduced by a simple evolutionary model developed in this work, that consists in an early truncation of the star formation for bright cluster galaxies and a delayed truncation for faint cluster galaxies.

scholarly journals LoCuSS: first results from strong-lensing analysis of 20 massive galaxy clusters atz= 0.2

2010 ◽  
Author(s):  
Johan Richard ◽  
Graham P. Smith ◽  
Jean-Paul Kneib ◽  
Richard S. Ellis ◽  
A. J. R. Sanderson ◽  
...  
Keyword(s):  
Galaxy Clusters ◽  
Strong Lensing ◽  
First Results ◽  
Massive Galaxy

scholarly journals Weighing the Giants – I. Weak-lensing masses for 51 massive galaxy clusters: project overview, data analysis methods and cluster images

2014 ◽  
Vol 439 (1) ◽  
pp. 2-27 ◽  
Author(s):  
Anja von der Linden ◽  
Mark T. Allen ◽  
Douglas E. Applegate ◽  
Patrick L. Kelly ◽  
Steven W. Allen ◽  
...  
Keyword(s):  
Data Analysis ◽  
Galaxy Clusters ◽  
Weak Lensing ◽  
Analysis Methods ◽  
Massive Galaxy ◽  
Data Analysis Methods

Most of the Universe is Missing!

2019 ◽  
pp. 64-72
Author(s):  
Nicholas Mee
Keyword(s):  
Dark Matter ◽  
Galaxy Clusters ◽  
Early Universe ◽  
The World ◽  
Unknown Form ◽  
Theory Of Gravity ◽  
Stable Particles ◽  
The Universe

Most of the matter in the universe exists in an unknown form called dark matter. All estimates of the mass of galaxies and galaxy clusters suggest they contain far more matter than is visible to us in the form of stars. Conventional explanations, such as the existence of large quantities of burnt-out stars known as MACHOs or dark gas clouds, have been ruled out. The most popular explanation is that dark matter consists of vast quantities of hypothetical stable particles known as WIMPs that were produced in vast quantities in the very early universe. Many laboratories around the world are searching for signs of these particles. These include the Italian Gran Sasso laboratory running the XENON100 experiment. Some theorists have suggested the evidence for dark matter would disappear if we had a better theory of gravity. Analysis of the Bullet Cluster indicates such proposals will not work.

scholarly journals JELLYFISH: EVIDENCE OF EXTREME RAM-PRESSURE STRIPPING IN MASSIVE GALAXY CLUSTERS

2014 ◽  
Vol 781 (2) ◽  
pp. L40 ◽  
Author(s):  
H. Ebeling ◽  
L. N. Stephenson ◽  
A. C. Edge
Keyword(s):  
Galaxy Clusters ◽  
Ram Pressure ◽  
Massive Galaxy

scholarly journals THE CONTRIBUTION OF RADIO GALAXY CONTAMINATION TO MEASUREMENTS OF THE SUNYAEV-ZEL'DOVICH DECREMENT IN MASSIVE GALAXY CLUSTERS AT 140 GHz WITH BOLOCAM

2013 ◽  
Vol 764 (2) ◽  
pp. 152 ◽  
Author(s):  
J. Sayers ◽  
T. Mroczkowski ◽  
N. G. Czakon ◽  
S. R. Golwala ◽  
A. Mantz ◽  
...  
Keyword(s):  
Galaxy Clusters ◽  
Radio Galaxy ◽  
Massive Galaxy
Sign in / Sign up

Export Citation Format

Share Document