Results 131 to 140 of about 47,826 (245)

Photometric Redshift Forecast for the 7-Dimensional Sky Survey

The Astrophysical Journal
We 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, Myungshin Im, Yujin Yang, Ji Hoon Kim, Seong-Kook Lee, Gregory S.-H. Paek   +5 more
doaj   +1 more source

On photometric redshift requirements

New Journal of Physics, 2007
Cosmic shear constrains cosmology by exploiting the apparent alignments of pairs of galaxies due to gravitational lensing by intervening mass clumps. However, galaxies may become (intrinsically) aligned with each other, and with nearby mass clumps, during their formation.
Bridle, Sarah, King, Lindsay
openaire   +1 more source

Photometric Redshifts and Gravitational Telescopes

, 2000
We review the use of photometric redshifts in the particular context of Gravitational Telescopes. We discuss on the possible application of such a technique to the study of both the faint population of distant sources and the properties of cluster lenses.
Pello, R., Bolzonella, M., Borgne, J. F. Le, Kneib, J. P., Fort, B., Mellier, Y., Dantel, M., Campusano, L., Ellis, R. S., Smail, I., Tijera, I.   +10 more
openaire   +2 more sources

The FENIKS Survey: Multiwavelength Photometric Catalog in the UDS Field, and Catalogs of Photometric Redshifts and Stellar Population Properties

The Astrophysical Journal
We present the construction of a deep multiwavelength point-spread-function-matched photometric catalog in the Ultra-Deep Survey (UDS) field following the final UKIDSS UDS release.
Kumail Zaidi, Danilo Marchesini, Casey Papovich, Jacqueline Antwi-Danso, Mario Nonino, Marianna Annunziatella, Gabriel Brammer, James Esdaile, Karl Glazebrook, Kartheik Iyer, Ivo Labbé, Z. Cemile Marsan, Adam Muzzin, David A. Wake   +13 more
doaj   +1 more source

How Future Space-Based Weak-Lensing Surveys Might Obtain Photometric Redshifts Independently [PDF]

, 2011
R. Sorba, M. Sawicki
openalex   +1 more source

Analytical marginalization over photometric redshift uncertainties in cosmic shear analyses [PDF]

, 2023
Jaime Ruiz-Zapatero, Boryana Hadzhiyska, David Alonso, Pedro G. Ferreira, Carlos García-García, Arrykrishna Mootoovaloo   +5 more
openalex   +1 more source

Photometric Redshifts in the CFDF

, 1999
The Canada-France Deep Fields (CFDF) is a large, deep, multi-colour imaging survey undertaken primarily at CFHT. It is about 10 times fainter than the CFRS (Lilly et al 1995a) and contains over 100 times as many galaxies. With three common fields, CFDF redshifts will be estimated photometrically using the CFRS spectroscopic catalogue as a training set.
Brodwin, Mark, Lilly, Simon, Crampton, David   +2 more
openaire   +2 more sources

Improving Photometric Redshift Estimates with Training Sample Augmentation

The Astrophysical Journal Letters
Large imaging surveys will rely on photometric redshifts (photo- z 's), which are typically estimated through machine-learning methods. Currently planned spectroscopic surveys will not be deep enough to produce a representative training sample for Legacy
Irene Moskowitz, Eric Gawiser, John Franklin Crenshaw, Brett H. Andrews, Alex I. Malz, Samuel Schmidt, The LSST Dark Energy Science Collaboration   +6 more
doaj   +1 more source

Photometric Redshifts in the W-CDF-S and ELAIS-S1 Fields Based on Forced Photometry from 0.36 -- 4.5 Microns

, 2021
Fan Zou, Guang Yang
openalex   +1 more source

Astrometric Redshifts of Supernovae

The Astrophysical Journal
Differential Chromatic Refraction (DCR) is caused by the wavelength dependence of our atmosphere’s refractive index, which shifts the apparent positions of stars and galaxies and distorts their shapes depending on their spectral energy distributions ...
Jaemyoung (Jason) Lee, Masao Sako, Richard Kessler, Alex I. Malz, The LSST Dark Energy Science Collaboration   +4 more
doaj   +1 more source