Results 111 to 120 of about 64,304 (283)
Beyond Colors: Probing Redshifts from Galaxy Morphology in Single-band Images with ViT-MDNz
The Astrophysical Journal Supplement SeriesTo address the challenge of estimating redshifts when only single-band images are available, this study introduces a deep learning model named Vision Transformer (ViT)-MDNz.
Zhijian Luo +7 more
doaj +1 more source
, 2011 The uncertainty in the redshift distributions of galaxies has a significant potential impact on the cosmological parameter values inferred from multi-band imaging surveys.
Albrecht +34 more
core +1 more source
Phase‐Pure and Size‐Tunable Tin Halide Perovskite Quantum Dots
Advanced Materials, EarlyView.A trioctylphosphine oxide modulated protocol allows for the synthesis and study of the optical properties of a broad library of tin halide perovskite quantum dots across multiple A‐ and X‐site compositions with precise size tuning while eliminating unwanted 2D phases.
Ole F. Dressler +7 more
wiley +1 more source
The Astrophysical JournalExtragalactic science and cosmology with Stage IV galaxy surveys will rely almost exclusively on redshift measurements derived solely from photometry, which are subject to systematic and statistical uncertainties with numerous analysis choices.
Bryan R. Scott +2 more
doaj +1 more source
Redshift-Independent Distances to Type Ia Supernovae
, 2004 We describe a procedure for accurately determining luminosity distances to Type Ia supernovae (SNe Ia) without knowledge of redshift. This procedure, which may be used as an extension of any of the various distance determination methods currently in use,
Barris B. J. +4 more
core +1 more source
Non‐Continuous Iridescent Variable Structural Color Based on Metallic Surface Periodic Structures
Advanced Materials Interfaces, EarlyView.This study presents an ink‐free laser nanofabrication technique that generates periodic arched microstructures on titanium surfaces, achieving non‐continuous iridescent dual‐color switching. The ridge and side flanks of these structures possess distinct oxide film thicknesses, enabling angle‐dependent selective reflection of specific wavelengths.
XiangWei Liu +3 more
wiley +1 more source
Simulating Spectral Confusion in SPHEREx Photometry and Redshifts
The Astrophysical JournalWe model the impact of source confusion on photometry and the resulting spectrophotometric redshifts for SPHEREx, a NASA Medium-Class Explorer that is carrying out an all-sky near-infrared spectral survey.
Zhaoyu Huai +14 more
doaj +1 more source
Mechanical Stress Evolution in Polycrystalline Ge Thin Films Under MeV Ion Irradiation
Advanced Materials Interfaces, EarlyView.Irradiation of polycrystalline Ge thin films with 1.8 MeV Au ions alters residual stress through defect generation and lattice expansion. Increasing fluence drives progressive lattice disorder and eventual amorphization. Polycrystalline Ge resists amorphization longer than crystalline Ge, as grain boundaries facilitate defect diffusion, significantly ...
Karla J. Paz Corrales +10 more
wiley +1 more source
A Photometric Redshift Catalogue of Galaxies from the DESI Legacy Imaging Surveys DR10
The Astronomical JournalThe large-scale measurement of galaxy redshifts holds significant importance for cosmological research, as well as for understanding the formation and evolution of galaxies. This study utilizes a known sample obtained by cross-correlating the Dark Energy
Changhua Li +10 more
doaj +1 more source