Results 81 to 90 of about 1,149,467 (210)
Photometric Redshift Forecast for the 7-Dimensional Sky Survey
The Astrophysical JournalWe investigate the expected accuracy of redshifts that can be obtained using low-resolution spectroscopic (medium-band) data from the 7-Dimensional Sky Survey (7DS). By leveraging 40 densely sampled filters with widths of FWHM = 25 nm, we create 7DS mock
Eunhee Ko +5 more
doaj +1 more source
Astronomy & AstrophysicsThe recently initiated SPHEREx and 7DS surveys will deliver low-resolution spectra (R ∼ 20 − 130) for hundreds of millions of galaxies over the optical to near-infrared range (0.4 − 5.0 μm), covering a wide sky area without sample selection. These unique
Bae Jangho +23 more
doaj +1 more source
On estimating redshift and luminosity distributions in photometric redshift surveys [PDF]
Monthly Notices of the Royal Astronomical Society, 2007 9 pages, 6 figures, submitted to ...
openaire +2 more sources
The Clustering of Dark Matter, Haloes & Galaxies [PDF]
, 2008 In this thesis I study the spatial distribution of galaxies, haloes and dark matter particlesin the Universe. The subjects investigated are conceptually divided into three areas.One line of research, which is made up of Chapters 2 and 3， is to explore ...
Raúl Esteban Angulo de la Puente,
core
Bayesian inference from photometric redshift surveys
, 2012 We show how to enhance the redshift accuracy of surveys consisting of tracers with highly uncertain positions along the line of sight. Photometric surveys with redshift uncertainty δz ∼ 0.03 can yield final redshift uncertainties of δz f ∼ 0.003 in high ...
Wandelt, Benjamin D. +3 more
core +1 more source
Integral-Field Spectroscopy of High-Redshift Galaxies: Implications for Early Galaxy Evolution [PDF]
, 2006 Several lines of evidence suggest that the most active phase of galaxy evolution, especially in the most massive systems, was largely completed by $z\sim 1$.
Nesvadba, Nicole
core +1 more source
Probabilistic Forward Modeling of Galaxy Catalogs with Normalizing Flows
The Astronomical JournalEvaluating the accuracy and calibration of the redshift posteriors produced by photometric redshift (photo- z ) estimators is vital for enabling precision cosmology and extragalactic astrophysics with modern wide-field photometric surveys.
John Franklin Crenshaw +7 more
doaj +1 more source
Astronomy & AstrophysicsAccurate and automated galaxy redshift determinations are essential for maximizing the scientific return of spectroscopic surveys. In this paper, we propose a data-driven method to address this challenge.
Bourahma Masten +7 more
doaj +1 more source
The Stromlo-APM Redshift Survey. IV. The Redshift Catalog
The Astrophysical Journal Supplement Series, 1996 The Stromlo-APM Redshift Survey consists of 1797 galaxies with {ital b}{sub {ital J}}{le}17.15 selected randomly, at a rate of 1 in 20 from automated plate measurement (APM) scans. The survey covers a solid angle of 1.3 sr (4300 deg{sup 2}) in the south Galactic cap. Redshifts have been measured for 1790 (99.6{percent}) of the galaxies.
J. Loveday +3 more
openaire +1 more source
JWST Discovery of a High-redshift Tidal Disruption Event Candidate in COSMOS-Web
The Astrophysical JournalThe rates and properties of tidal disruption events (TDEs) provide valuable insights into their host galaxy central stellar densities and the demographics of their central supermassive black holes. TDEs have been observed only at low redshifts ( z ≲ 1),
Mitchell Karmen +28 more
doaj +1 more source