Results 61 to 70 of about 12,566,242 (368)

The influence of halo assembly on galaxies and galaxy groups [PDF]

Monthly Notices of the Royal Astronomical Society, 2009
In this paper, we study the variations of group galaxy properties according to the assembly history in SDSS-DR6 selected groups. Using mock SDSS group catalogues, we find two suitable indicators of group formation time: i) the isolation of the group, defined as the distance to the nearest neighbor in terms of its virial radius, and ii) the ...
Tatiana Zapata, Tatiana Zapata, Patricia B. Tissera, Josefa Perez, Nelson Padilla   +4 more
openaire   +5 more sources

Janus kinase 2 inhibition by pacritinib as potential therapeutic target for liver fibrosis

Hepatology, EarlyView., 2022
Diagram of the activation of the profibrotic and procontractile Janus kinase 2 (JAK2)/Ras homolog family member A/Rho‐kinase pathway and the inhibition of phosphorylated JAK2 by pacritinib to inhibit hepatic stellate cell activity. Abstract Background and Aims Janus kinase 2 (JAK2) signaling is increased in human and experimental liver fibrosis with ...
Sandra Torres, Cristina Ortiz, Nadine Bachtler, Wenyi Gu, Leon D. Grünewald, Nico Kraus, Robert Schierwagen, Christoph Hieber, Caroline Meier, Olaf Tyc, Maximilian Joseph Brol, Frank Erhard Uschner, Bart Nijmeijer, Christoph Welsch, Marie‐Luise Berres, Carmen Garcia‐Ruiz, Jose Carlos Fernandez‐Checa, Christian Trautwein, Thomas J. Vogl, Stefan Zeuzem, Jonel Trebicka, Sabine Klein   +21 more
wiley   +1 more source

Iron in galaxy groups and clusters: confronting galaxy evolution models with a newly homogenized data set [PDF]

, 2016
We present an analysis of the iron abundance in the hot gas surrounding galaxy groups and clusters. To do this, we first compile and homogenize a large data set of 79 low-redshift (z = 0.03) systems (159 individual measurements) from the literature.
R. Yates, P. Thomas, B. Henriques
semanticscholar   +1 more source

Galaxy Groups at Intermediate Redshift [PDF]

The Astrophysical Journal, 2001
Galaxy groups likely to be virialized are identified within the CNOC2 intermediate redshift galaxy survey using an iterative method. The number-velocity dispersion relation is in agreement with the low-mass extrapolation of the cluster normalized Press-Schechter function.
Simon L. Morris, Simon L. Morris, Howard K. C. Yee, Howard K. C. Yee, David R. Patton, David R. Patton, David R. Patton, Patrick B. Hall, Patrick B. Hall, Patrick B. Hall, Hsiu-Hsien Lin, C. W. Shepherd, C. W. Shepherd, Marcin Sawicki, Marcin Sawicki, Marcin Sawicki, Raymond G. Carlberg, Raymond G. Carlberg   +17 more
openaire   +4 more sources

Galaxy pairs in the Local Group [PDF]

Monthly Notices of the Royal Astronomical Society: Letters, 2013
Abstract Current models of galaxy formation predict that galaxy pairs of comparable magnitudes should become increasingly rare with decreasing luminosity. This seems at odds with the relatively high frequency of pairings among dwarf galaxies in the Local Group. We use literature data to show that ∼30 per cent of all the satellites of the
Fattahi, Azadeh, Navarro, Julio F., Starkenburg, Else, Barber, Christopher R., McConnachie, Alan W.   +4 more
openaire   +3 more sources

Infall of galaxies onto groups [PDF]

Astronomy & Astrophysics, 2020
Context.The growth of the structure within the Universe manifests in the form of accretion flows of galaxies onto groups and clusters. Thus, the present-day properties of groups and their member galaxies are influenced by the characteristics of this continuous infall pattern.
Diego G. Lambas, Diego G. Lambas, M. L. Ceccarelli, M. L. Ceccarelli, María Victoria Santucho, María Victoria Santucho   +5 more
openaire   +4 more sources

Reionization of the Local Group of galaxies [PDF]

Monthly Notices of the Royal Astronomical Society, 2011
We present the first detailed structure formation and radiative transfer simulations of the reionization history of our cosmic neighbourhood. To this end, we follow the formation of the Local Group of galaxies and nearby clusters by means of constrained simulations, which use the available observational constraints to construct a representation of ...
Garrelt Mellema, Gustavo Yepes, Stefan Gottlöber, Yehuda Hoffman, Ilian T. Iliev, Ilian T. Iliev, Ben Moore   +6 more
openaire   +6 more sources

Filaments of galaxies and Voronoi diagrams

Open Astronomy, 2018
The intersections between a spherical shell and the faces of Voronoi polyhedrons are numerically evaluated. The nodes of these intersections are the points that share the same distances from three nuclei.
Zaninetti Lorenzo
doaj   +1 more source

Dark matter halo properties of GAMA galaxy groups from 100 square degrees of KiDS weak lensing data [PDF]

, 2015
The Kilo-Degree Survey is an optical wide-field survey designed to map the matter distribution in the Universe using weak gravitational lensing.
M. Viola, M. Cacciato, M. Brouwer, K. Kuijken, H. Hoekstra, P. Norberg, A. Robotham, E. V. Uitert, M. Alpaslan, I. Baldry, A. Choi, J. D. Jong, S. Driver, T. Erben, A. Grado, A. Graham, C. Heymans, H. Hildebrandt, A. Hopkins, N. Irisarri, B. Joachimi, J. Loveday, L. Miller, R. Nakajima, P. Schneider, C. Sifón, G. V. Kleijn   +26 more
semanticscholar   +1 more source

GALAXY GROUPS: A 2MASS CATALOG [PDF]

, 2015
A galaxy group catalog is built from the sample of the 2MASS Redshift Survey almost complete to Ks = 11.75 over 91% of the sky. Constraints in the construction of the groups were provided by scaling relations determined by close examination of well ...
R. Tully
semanticscholar   +1 more source