Results 121 to 130 of about 335,375 (390)
Cosmology at low redshifts [PDF]
Astronomy & Astrophysics, 2003 PDF file 294KB Astronomy & Astrophysics 2003, In ...
openaire +4 more sources
Redshifts and Killing vectors [PDF]
American Journal of Physics, 2006 Current approaches to physics stress the importance of conservation laws due to spacetime and internal symmetries. In special and general relativity the generators of these symmetries are known as Killing vectors. We use them for the rigorous determination of gravitational and cosmological redshifts.
Alex Harvey +2 more
openaire +3 more sources
RECONCILING THE STELLAR AND NEBULAR SPECTRA OF HIGH-REDSHIFT GALAXIES [PDF]
, 2016 We present a combined analysis of rest-frame far-UV (FUV; 1000–2000 Å) and rest-frame optical (3600–7000 Å) composite spectra formed from very deep Keck/LRIS and Keck/MOSFIRE observations of a sample of 30 star-forming galaxies with , selected to be ...
C. Steidel +5 more
semanticscholar +1 more source
Advanced Functional Materials, EarlyView.An asymmetric non‐fullerene acceptor BTP‐FT is developed by extending the end group of Y6‐BO with thiophene. The conformation of the molecule is determined by the noncovalent F···S interaction as demonstrated by 2D NMR and simulations. An efficiency of 18.39% is achieved in the resulting ternary solar cells processed from toluene.
Jingnan Wu +14 more
wiley +1 more source
RAiSERed: radio continuum redshifts for lobed AGNs [PDF]
, 2020 Next-generation radio surveys are expected to detect tens of millions of active galactic nuclei (AGN) with a median redshift of z > 1. Beyond targeted surveys, the vast majority of these objects will not have spectroscopic redshifts, whilst photometric redshifts for high-redshift AGNs are of limited quality, and even then require optical and infrared ...
arxiv +1 more source
Lower bounds on photometric redshift errors from Type Ia supernovae templates [PDF]
, 2009 Cosmology with Type Ia supernovae heretofore has required extensive spectroscopic follow-up to establish a redshift. Though tolerable at the present discovery rate, the next generation of ground-based all-sky survey instruments will render this approach ...
Asztalos +20 more
core +3 more sources
All‐Cellulose‐Based Photonic Glitters
Advanced Functional Materials, EarlyView.Uniform, disc‐shaped photonic CNC glitters with adjustable structural colors and diameters are fabricated on hydrophilic ethyl cellulose films using electrospray deposition. By employing patterned ethyl cellulose films with pre‐designed hydrophilic regions, photonic patterns can be created with these all‐cellulose‐based glitters, demonstrating their ...
Ting Wang +5 more
wiley +1 more source
Comparative study on zinc oxide nanocrystals synthesized by two precipitation methods
CerâmicaZinc oxide nanocrystals were synthesized by two precipitation methods successfully. The nanocrystals prepared via method I (zinc acetate dihydrate precipitation with KOH) were smaller in crystallite size (~20 nm) as compared to method II (zinc nitrate ...
M. R. Bodke, Y. Purushotham, B. N. Dole
doaj +1 more source
The influence of wavelength, flux, and lensing selection effects on the redshift distribution of dusty, star-forming galaxies [PDF]
, 2015 We interpret the large variety of redshift distributions of galaxies found by far-infrared and (sub-)millimeter deep surveys depending on their depth and wavelength using the Bethermin et al. (2012) phenomenological model of galaxy evolution.
Benson +35 more
core +5 more sources
Morpho-photometric redshifts [PDF]
Monthly Notices of the Royal Astronomical Society, 2019 ABSTRACT Machine learning (ML) is one of two standard approaches (together with SED fitting) for estimating the redshifts of galaxies when only photometric information is available. ML photo-z solutions have traditionally ignored the morphological information available in galaxy images or partly included it in the form of hand-crafted ...
openaire +2 more sources