Results 81 to 90 of about 32,916 (218)

Radial structure, inflow and central mass of stationary radiative galaxy clusters

open access: yes, 2008
We analyse the radial structure of self-gravitating spheres consisting of multiple interpenetrating fluids, such as the X-ray emitting gas and the dark halo of a galaxy cluster. In these dipolytropic models, the adiabatic dark matter sits in equilibrium,
Wu, K, Saxton, C
core  

The Clustering of Dark Matter, Haloes & Galaxies [PDF]

open access: yes, 2008
In this thesis I study the spatial distribution of galaxies, haloes and dark matter particlesin the Universe. The subjects investigated are conceptually divided into three areas.One line of research, which is made up of Chapters 2 and 3, is to explore ...
Raúl Esteban Angulo de la Puente,
core  

Studying Cosmic Evolution with the XMM-Newton Distant Cluster Project [PDF]

open access: yes, 2007
Investigating X-ray luminous galaxy clusters at high redshift (z>~1) provides a challenging but fundamental constraint on evolutionary studies of the largest virialized structures in the Universe, the baryonic matter component in form of the hot ...
Fassbender, Rene
core  

Modeled cellulase structure

open access: yes, 2019
<p>Cellulase structure based on PDB code 7CEL, used for Galaxy molecular dynamics tutorial.</p ...
Chris Barnett (3765496), Chris Barnett
core   +1 more source

On the Structure of Galaxy Clusters [PDF]

open access: yes, 2007
I summarise the state of the scientific exploration of the structure of galaxy clusters and present two new studies, namely, I propose and test a novel method to model clusters by a joint X-ray, thermal Sunyaev-Zeldovich and lensing analysis, and I investigate the impact of baryonic physics on strong cluster lensing and cluster structure.
openaire   +1 more source

Galaxy Clusters Across the Electromagnetic Spectrum [PDF]

open access: yes, 2016
Galaxy clusters are the largest gravitationally bound objects in the Universe. From radio to X-ray, we have observed these objects across the electromagnetic spectrum.
Griffin, Rhiannon
core  

Galaxy evolution as a function of mass and environment: giant and dwarf galaxies in superclusters and in the field

open access: yes, 2008
It has been known for decades that local galaxies can be broadly divided into two distinct populations (e.g. Hubble 1926, 1936; Morgan 1958; de Vaucouleurs 1961).
Gargiulo, Adriana
core  

The statistical lensing of QSOs [PDF]

open access: yes, 2003
We use the 2dF QSO Redshift Survey, to investigate whether QSOs are detectably gravitationally lensed. Lensing could magnify and distort light from QSOs, influencing QSO numbers near galaxies, which trace structure in our Universe. Following Boyle, Fong &
Myers, Adam David
core  

An Updated Efficient Galaxy Morphology Classification Model Based on ConvNeXt Encoding with UMAP Dimensionality Reduction

open access: yesThe Astronomical Journal
We present an enhanced unsupervised machine learning (UML) module within our previous USmorph classification framework featuring two components: (1) hierarchical feature extraction via a pretrained ConvNeXt convolutional neural network with transfer ...
Guanwen Fang   +7 more
doaj   +1 more source

A MaNGA about the Legacy. I. Connecting the Assembly of Stellar Halo with the Average Star Formation History in Low-redshift Massive Galaxies

open access: yesThe Astronomical Journal
We investigate the connection between stellar mass distribution, assembly history, and star formation timescales in low-redshift massive early-type galaxies (ETGs) by combining deep LegacySurvey imaging with MaNGA’s spatially resolved spectroscopy ...
Xiaoya Zhang, Song Huang, Meng Gu
doaj   +1 more source

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