Results 51 to 60 of about 47,912 (274)
Galaxy mergers in a fractal cosmology
European Physical Journal C: Particles and FieldsThis work discusses the influence of galaxy mergers in the evolution of a parabolic Lemaître–Tolman–Bondi (LTB) cosmology with simultaneous big bang endowed with two consecutive single fractal galaxy distributions systems possessing fractal dimension D ...
Bruno J. Souza +2 more
doaj +1 more source
From Discs to Bulges: effect of mergers on the morphology of galaxies [PDF]
, 2015 We study the effect of mergers on the morphology of galaxies by means of the simulated merger tree approach first proposed by Moster et al. This method combines N-body cosmological simulations and semi-analytic techniques to extract realistic initial ...
Fontanot, Fabio +5 more
core +3 more sources
ESC Heart Failure, EarlyView.This state‐of‐the‐art review outlines a practical, evidence‐based framework for early acute heart failure management to address critical gaps in current guidance and improve early treatment outcomes. Key components include early identification of co‐existing conditions, bedside haemodynamic profiling, a structured diagnostic approach incorporating both
Anika S. Naidu +22 more
wiley +1 more source
Quasars Can Signpost Supermassive Black Hole Binaries
The Astrophysical JournalSupermassive black holes (SMBHs) are found in the centers of massive galaxies, and galaxy mergers should eventually lead to SMBH mergers. Quasar activity has long been associated with galaxy mergers, so here we investigate if supermassive black hole ...
J. Andrew Casey-Clyde +5 more
doaj +1 more source
The significant contribution of minor mergers to the cosmic star formation budget [PDF]
, 2013 We estimate an empirical lower limit for the fraction of cosmic star formation that is triggered by minor mergers in the local Universe. Splitting the star formation budget by galaxy morphology, we find that early-type galaxies (ETGs) host ~14 per cent ...
Kaviraj, S.
core +2 more sources
European Journal of Heart Failure, EarlyView.Graphical overview of derivation and testing of multiparametric trajectories of cardiac function. This study identified six trajectories of LV systolic and diastolic function from mid‐ to late‐life. Predicted trajectory from single echocardiogram identified four trajectories at differential risk for HFpEF and HFrEF.
Anne Marie Reimer Jensen +8 more
wiley +1 more source
On the Use of Galaxy Catalogs in Gravitational-wave Parameter Estimation
The Astrophysical JournalA major challenge in gravitational-wave (GW) multimessenger astrophysics is the imprecise localization of GW compact binary mergers. We investigate the use of a method to include galaxy catalog information in performing parameter estimation of these ...
Geoffrey Mo +2 more
doaj +1 more source
The History of Galaxy Mergers in IllustrisTNG
UniverseThe process of galaxy evolution over cosmic time is not yet fully understood, since there is a debate on the impact of galaxy collisions on the star formation and metallicity.
Bendeguz Koncz +4 more
doaj +1 more source
The Origin of the Consistent Planetary Nebula Luminosity Function Bright-end Cutoff
The Astrophysical Journal, 2023 The [O iii ] 5007 Å line is typically the brightest line in planetary nebula (PN) spectra. Observations show that the brightest [O iii ] 5007 Å PN in a galaxy—the planetary nebula luminosity function (PNLF) bright-end cutoff—is surprisingly independent ...
Philippe Z. Yao, Eliot Quataert
doaj +1 more source
Forming Young Bulges within Existing Disks: Statistical Evidence for External Drivers
, 2003 Contrary to traditional models of galaxy formation, recent observations suggest that some bulges form within preexisting disk galaxies. Such late-epoch bulge formation within disks seems to be linked to disk gas inflow and central star formation, caused ...
Abraham R. G. +11 more
core +1 more source