Results 11 to 20 of about 235,164 (217)
A Multiwavelength Technique for Estimating Galaxy Cluster Mass Accretion Rates [PDF]
The Astrophysical JournalThe mass accretion rate of galaxy clusters is a key factor in determining their structure, but a reliable observational tracer has yet to be established.
John Soltis +9 more
doaj +3 more sources
THE MASS ACCRETION RATE OF GALAXY CLUSTERS: A MEASURABLE QUANTITY [PDF]
The Astrophysical Journal, 2016 ABSTRACT We explore the possibility of measuring the mass accretion rate (MAR) of galaxy clusters from their mass profiles beyond the virial radius R 200. We derive the accretion rate from the mass of a spherical shell whose inner radius is 2R 200, whose thickness changes with redshift, and whose ...
DE BONI, CRISTIANO +4 more
openaire +7 more sources
Subhalos in Galaxy Clusters: Coherent Accretion and Internal Orbits [PDF]
The Astrophysical JournalSubhalo dynamics in galaxy cluster host halos govern the observed distribution and properties of cluster member galaxies. We use the IllustrisTNG simulation to investigate the accretion and orbits of subhalos found in cluster-size halos. We find that the
Chi Han +3 more
doaj +3 more sources
Accretion of galaxy groups into galaxy clusters [PDF]
Monthly Notices of the Royal Astronomical Society, 2020 ABSTRACT We study the role of group infall in the assembly and dynamics of galaxy clusters in ΛCDM. We select 10 clusters with virial mass M200 ∼ 1014 $\rm M_\odot$ from the cosmological hydrodynamical simulation Illustris and follow their galaxies with stellar mass M⋆ ≥ 1.5 × 108 $\rm M_\odot$.
José A Benavides +2 more
openaire +3 more sources
The Nature of Accretion in Seyfert Galaxies [PDF]
International Journal of Astrophysics and Space Science, 2021 We present statistical results from a sample of 91,006 Seyfert galaxies obtained from SDSS DR14 (Sloan Digital Sky Survey Data Release 14). Using the ratio of the flux of doubly ionized oxygen [OIII] to that of the flux of hydrogen beta line Hβ, the Seyfert galaxy sample was separated into Seyferts 1 and 2.
Nwankwo Ifeanyi Francis +1 more
openaire +1 more source
ACCRETION OF THE MAGELLANIC SYSTEM ONTO THE GALAXY [PDF]
The Astrophysical Journal, 2011 Our Galaxy is surrounded by a large family of dwarf galaxies of which the most massive are the Large and Small Magellanic Clouds (LMC and SMC). Recent evidence suggests that systems with the mass of the Local Group accrete galaxies in smaller groups rather than individually.
Nichols, Matthew +3 more
openaire +3 more sources
A WARM MODE OF GAS ACCRETION ON FORMING GALAXIES [PDF]
The Astrophysical Journal, 2012 We present results from high--resolution cosmological hydrodynamical simulations of a Milky--Way-sized halo, aimed at studying the effect of feedback on the nature of gas accretion. Simulations include a model of inter-stellar medium and star formation, in which SN explosions provide effective thermal feedback. We distinguish between gas accretion onto
Murante G. +5 more
openaire +3 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 +21 more
wiley +1 more source
Mass Accretion Rates of the HectoMAP Clusters of Galaxies [PDF]
The Astrophysical Journal, 2022 Abstract We estimate the mass accretion rate (MAR) of 321 clusters of galaxies in the HectoMAP Cluster Survey. The clusters span the redshift range 0.17–0.42 and the M 200 mass range ≈ (0.5–3.5) × 1014 M ⊙.
M. Pizzardo +4 more
openaire +2 more sources
, 2021 In the two-phase scenario of galaxy formation, a galaxy's stellar mass growth is first dominated by in-situ star formation, and subsequently by accretion. We analyse the radial distribution of the accreted stellar mass in ~500 galaxies from the hydrodynamical cosmological simulation Magneticum.
Remus, Rhea-Silvia, Forbes, Duncan A.
openaire +2 more sources