Results 11 to 20 of about 1,426,687 (380)

The Early Data Release of the Dark Energy Spectroscopic Instrument [PDF]

open access: yesAstronomical Journal, 2023
The Dark Energy Spectroscopic Instrument (DESI) completed its 5 month Survey Validation in 2021 May. Spectra of stellar and extragalactic targets from Survey Validation constitute the first major data sample from the DESI survey. This paper describes the
D. C. A. G. Adame   +263 more
semanticscholar   +1 more source

Validation of the Scientific Program for the Dark Energy Spectroscopic Instrument [PDF]

open access: yesAstronomical Journal, 2023
The Dark Energy Spectroscopic Instrument (DESI) was designed to conduct a survey covering 14,000 deg2 over 5 yr to constrain the cosmic expansion history through precise measurements of baryon acoustic oscillations (BAO).
D. C. A. G. Adame   +260 more
semanticscholar   +1 more source

Overview of the Instrumentation for the Dark Energy Spectroscopic Instrument [PDF]

open access: yesAstronomical Journal, 2022
The Dark Energy Spectroscopic Instrument (DESI) embarked on an ambitious 5 yr survey in 2021 May to explore the nature of dark energy with spectroscopic measurements of 40 million galaxies and quasars. DESI will determine precise redshifts and employ the
B. Abareshi   +266 more
semanticscholar   +1 more source

Spectroscopic confirmation of four metal-poor galaxies at z = 10.3–13.2 [PDF]

open access: yesNature Astronomy, 2022
As part of the JWST Advanced Deep Extragalactic Survey (JADES), NIRSpec has spectroscopically confirmed four young and metal-poor galaxies at redshift 10.3–13.2, from an early epoch of galaxy formation.
E. Curtis-Lake   +58 more
semanticscholar   +1 more source

The Spectroscopic Data Processing Pipeline for the Dark Energy Spectroscopic Instrument [PDF]

open access: yesAstronomical Journal, 2022
We describe the spectroscopic data processing pipeline of the Dark Energy Spectroscopic Instrument (DESI), which is conducting a redshift survey of about 40 million galaxies and quasars using a purpose-built instrument on the 4 m Mayall Telescope at Kitt
J. Guy   +56 more
semanticscholar   +1 more source

Completed SDSS-IV extended Baryon Oscillation Spectroscopic Survey: Cosmological implications from two decades of spectroscopic surveys at the Apache Point Observatory [PDF]

open access: yesPhysical Review D, 2020
We present the cosmological implications from final measurements of clustering using galaxies, quasars, and Ly$\alpha$ forests from the completed Sloan Digital Sky Survey (SDSS) lineage of experiments in large-scale structure. These experiments, composed
S. Alam   +98 more
semanticscholar   +1 more source

KiDS-1000 Cosmology: Multi-probe weak gravitational lensing and spectroscopic galaxy clustering constraints [PDF]

open access: yesAstronomy & Astrophysics, 2020
We present a joint cosmological analysis of weak gravitational lensing observations from the Kilo-Degree Survey (KiDS-1000), with redshift-space galaxy clustering observations from the Baryon Oscillation Spectroscopic Survey (BOSS) and galaxy-galaxy ...
C. Heymans   +30 more
semanticscholar   +1 more source

Exocomets: A spectroscopic survey [PDF]

open access: yesAstronomy & Astrophysics, 2020
Context.While exoplanets are now routinely detected, the detection of small bodies in extrasolar systems remains challenging. Since the discovery of sporadic events, which are interpreted to be exocomets (falling evaporating bodies) aroundβPic in the early 1980s, only ∼20 stars have been reported to host exocomet-like events.Aims.We aim to expand the ...
Olivier Absil   +21 more
openaire   +7 more sources

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