Results 31 to 40 of about 209,546 (281)
Astronomy & AstrophysicsContext. High-resolution very long baseline interferometry (VLBI) observations have revealed a growing number of active galactic nuclei (AGNs) that exhibit variations in their inner jet position angle (PA).
Thevenet Paloma +4 more
doaj +1 more source
Stochastic Biasing and Galaxy-Mass Density Relation in the Weakly Non-linear Regime
, 1999 It is believed that the biasing of the galaxies plays an important role for understanding the large-scale structure of the universe. In general, the biasing of galaxy formation could be stochastic.
Chodorowski M. J., Mo H. J., Mo H. J.
core +2 more sources
Large Scale Structure in Dark Matter and Galaxies [PDF]
, 2009 Galaxy evolution and AGN growth in the early universe are believed to be strongly driven by merging (hierarchical growth) and galaxy dynamical interactions.
Scoville, Nick
core +1 more source
Two phase galaxy formation: The Evolutionary Properties of Galaxies [PDF]
, 2009 We use our model for the formation and evolution of galaxies within a two-phase galaxy formation scenario, showing that the high-redshift domain typically supports the growth of spheroidal systems, whereas at low redshifts the predominant baryonic growth
Barausse, E +4 more
core +2 more sources
Galaxy Evolution from Deep Galaxy Counts [PDF]
Symposium - International Astronomical Union, 1995 We present deep galaxy number counts and colours of K – band selected galaxy surveys. We argue that primeval galaxies are present within the survey data, but have remained unidentified. There are few objects with the colours of an L∗ elliptical galaxy at a redshift of z ≈ 1, in contradiction to standard luminosity evolution models.
openaire +1 more source
Advanced Materials, EarlyView.A fully flexible ion‐gel‐gated graphene‐channel transistor driven by a triboelectric nanogenerator enables self‐powered tactile sensing and synaptic learning. Mimicking spike‐rate‐dependent plasticity, the device exhibits frequency‐selective potentiation and depression, supporting rate‐coded neuromorphic computation even under flex.
Hanseong Cho +3 more
wiley +1 more source
Advanced Materials Technologies, EarlyView.This review explores advances in wearable and lab‐on‐chip technologies for breast cancer detection. Covering tactile, thermal, ultrasound, microwave, electrical impedance tomography, electrochemical, microelectromechanical, and optical systems, it highlights innovations in flexible electronics, nanomaterials, and machine learning.
Neshika Wijewardhane +4 more
wiley +1 more source
The Astrophysical JournalThe tip of the red giant branch (TRGB) provides a key standard candle for extragalactic distance measurements and for refining the Hubble constant. We test its robustness by quantifying how metallicity, α -element enhancement, age, and initial helium ...
Chul Chung +12 more
doaj +1 more source
Internal Secular Evolution in Disk Galaxies: The Growth of Pseudobulges
, 2007 Observational and theoretical evidence that internal, slow ("secular") evolution reshapes galaxy disks is reviewed in Kormendy & Kennicutt (2004, ARAA, 42, 603). This update has three aims.
Athanassoula +14 more
core +1 more source
Disentangling star formation and merger growth in the evolution of luminous red galaxies [PDF]
, 2011 We introduce a novel technique for empirically understanding galaxy evolution. We use empirically determined stellar evolution models to predict the past evolution of the Sloan Digital Sky Survey (SDSS-II) Luminous Red Galaxy (LRG) sample without any a ...
Percival, Will, Tojeiro, Rita
core +2 more sources