Results 81 to 90 of about 4,289,848 (346)

A Holistic Exploration of the Potentially Recoverable Redshift Information of Stage IV Galaxy Surveys

open access: yesThe Astrophysical Journal
Extragalactic 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

The Core Collapse Supernova Rate from the SDSS-II Supernova Survey [PDF]

open access: yes, 2014
We use the Sloan Digital Sky Survey II Supernova Survey (SDSS-II SNS) data to measure the volumetric core collapse supernova (CCSN) rate in the redshift range (0 ...
Cinabro, David   +10 more
core   +2 more sources

THE 2MASS REDSHIFT SURVEY—DESCRIPTION AND DATA RELEASE [PDF]

open access: yes, 2011
We present the results of the 2MASS Redshift Survey (2MRS), a ten-year project to map the full three-dimensional distribution of galaxies in the nearby universe.
J. Huchra   +19 more
semanticscholar   +1 more source

Atomically Dispersed Copper Electrocatalysts with Proton‐feeding Centers for Efficient Ammonia Synthesis by Nitrate Electroreduction

open access: yesAdvanced Functional Materials, EarlyView.
Rationally‐designed advanced carbon‐based single‐atom catalysts with isolated CuN2O2 active sites anchored in N,O‐doped porous carbon facilitate water dissociation and nitrate reduction, accelerating proton supply for efficient electrosynthesis of ammonia.
Yan Li   +14 more
wiley   +1 more source

Validation of the Scientific Program for the Dark Energy Spectroscopic Instrument

open access: yesThe Astronomical Journal
The Dark Energy Spectroscopic Instrument (DESI) was designed to conduct a survey covering 14,000 deg ^2 over 5 yr to constrain the cosmic expansion history through precise measurements of baryon acoustic oscillations (BAO).
DESI Collaboration   +264 more
doaj   +1 more source

Designing an Optimal LSST Deep Drilling Program for Cosmology with Type Ia Supernovae

open access: yesThe Astrophysical Journal Supplement Series, 2023
The Vera C. Rubin Observatory’s Legacy Survey of Space and Time (LSST) is forecast to collect a large sample of Type Ia supernovae (SNe Ia) expected to be instrumental in unveiling the nature of dark energy.
Philippe Gris   +10 more
doaj   +1 more source

Cluster mass calibration at high redshift: HST weak lensing analysis of 13 distant galaxy clusters from the South Pole Telescope Sunyaev-Zel'dovich Survey [PDF]

open access: yes, 2016
We present an HST/Advanced Camera for Surveys (ACS) weak gravitational lensing analysis of 13 massive high-redshift (zmedian = 0.88) galaxy clusters discovered in the South Pole Telescope (SPT) Sunyaev–Zel'dovich Survey.
T. Schrabback   +28 more
semanticscholar   +1 more source

Redshift distributions of galaxies in the Dark Energy Survey Science Verification shear catalogue and implications for weak lensing [PDF]

open access: yesPhysical Review D, 2015
We present photometric redshift estimates for galaxies used in the weak lensing analysis of the Dark Energy Survey Science Verification (DES SV) data.
C. Bonnett   +106 more
semanticscholar   +1 more source

Oligohistidine‐Functionalized Single‐Walled Carbon Nanotube‐Guided RNA Delivery to Improve Shoot Regeneration Efficiency in Plant Calli

open access: yesAdvanced Functional Materials, EarlyView.
The pH‐sensitive His6‐SWNTs, which is functionalized with oligohistidine, can deliver STTM396 molecules into callus cells. The STTM396–SWNT complex treatments enhance shoot regeneration efficiency by regulating the miR396‐GRF module in Arabidopsis and tomato calli.
Yeong Yeop Jeong   +7 more
wiley   +1 more source

The Canada-France Redshift Survey: The Luminosity Density and Star Formation History of the Universe to z ~ 1 [PDF]

open access: yes, 1996
The comoving luminosity density of the universe, ℒ(λ), is estimated from the Canada-France Redshift Survey (CFRS) faint galaxy sample in three wave bands (2800 Å, 4400 Å, and 1 μm) over the redshift range 0 < z < 1.
S. Lilly   +5 more
semanticscholar   +1 more source

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