Results 121 to 130 of about 47,826 (245)

MAGAZ3NE: Massive, Extremely Dusty Galaxies at z ∼ 2 Lead to Photometric Overestimation of Number Densities of the Most Massive Galaxies at 3 < z < 4

The Astrophysical Journal
We present rest-frame optical spectra from Keck/MOSFIRE and Keck/NIRES of 16 candidate ultramassive galaxies targeted as part of the Massive Ancient Galaxies at z > 3 Near-Infrared Survey (MAGAZ3NE).
Ben Forrest, M. C. Cooper, Adam Muzzin, Gillian Wilson, Danilo Marchesini, Ian McConachie, Percy Gomez, Marianna Annunziatella, Z. Cemile Marsan, Joey Braspenning, Wenjun Chang, Gabriella de Lucia, Fabio Fontanot, Michaela Hirschmann, Dylan Nelson, Annalisa Pillepich, Joop Schaye, Stephanie M. Urbano Stawinski, Mauro Stefanon, Lizhi Xie   +19 more
doaj   +1 more source

Neural Networks and Photometric Redshifts

, 2002
We present a neural network based approach to the determination of photometric redshift. The method was tested on the Sloan Digital Sky Survey Early Data Release (SDSS-EDR) reaching an accuracy comparable and, in some cases, better than SED template fitting techniques.
Tagliaferri, Roberto, Longo, Giuseppe, Andreon, Stefano, Capozziello, Salvatore, Donalek, Ciro, Giordano, Gerardo   +5 more
openaire   +2 more sources

IMPROVED PHOTOMETRIC REDSHIFTS WITH SURFACE LUMINOSITY PRIORS [PDF]

, 2009
Lifang Xia, Seth Cohen, Sangeeta Malhotra, James Rhoads, Norman Grogin, Nimish P. Hathi, Rogier A. Windhorst, Nor Pirzkal, Chun Xu   +8 more
openalex   +1 more source

Optimizing the shape of photometric redshift distributions with clustering cross-correlations [PDF]

, 2022
Benjamin Stölzner, Benjamin Joachimi, A. Korn   +2 more
openalex   +1 more source

Weak Lensing by High-Redshift Clusters of Galaxies II: Mean Redshift of the Faint Background Galaxy Population

, 2003
We use weak lensing shear measurements of six z>0.5 clusters of galaxies to derive the mean lensing redshift of the background galaxies used to measure the shear. Five of these clusters are compared to X-ray mass models and verify a mean lensing redshift
Bartelmann, Bartelmann, Bolzonella, Castander, Clowe, Clowe, Cohen, D. Clowe, Dye, Fahlman, Fernández-Soto, Fontana, G. A. Luppino, Gioia, Henry, Henry, Hoekstra, Hughes, Jeltema, Luppino, Luppino, Mellier, N. Kaiser, Neumann, Smail, Tran, Trentham, Yee   +27 more
core   +1 more source

Cosmology and Astrophysics with Standard Sirens and Galaxy Catalogs in View of Future Gravitational Wave Observations

The Astrophysical Journal
With the growing number of gravitational wave (GW) detections and the advent of large galaxy redshift surveys, a new era in cosmology is emerging. This study explores the synergies between GWs and galaxy surveys to jointly constrain cosmological and GW ...
Nicola Borghi, Michele Mancarella, Michele Moresco, Matteo Tagliazucchi, Francesco Iacovelli, Andrea Cimatti, Michele Maggiore   +6 more
doaj   +1 more source

A Model-Independent Photometric Redshift Estimator [PDF]

, 1999
Yun Wang, Neta A. Bahcall, Edwin L. Turner   +2 more
openalex   +1 more source

Using the 2-MASS photometric redshift survey to optimize LIGO follow-up observations [PDF]

, 2016
Elisa Antolini, Jeremy Heyl
openalex   +1 more source

A Test of Photometric Redshifts for X-ray Selected Sources

, 2002
We test the effectiveness of photometric redshifts based upon galaxy spectral template fitting for X-ray luminous objects, using a sample of 65 sources detected by Chandra in the field of the Caltech Faint Galaxy Redshift Survey (CFGRS).
Anthony H. Gonzalez, Bolzonella M., Pierre M., Thomas J. Maccarone   +3 more
core   +1 more source

Parasitic Light in NGST instruments: the accuracy of photometric redshifts and the effect of filter leaks in the visible and near IR camera [PDF]

, 2001
S. Cristiani, S. Arnouts, R. A. E. Fosbury   +2 more
openalex   +1 more source