Results 31 to 40 of about 47,826 (245)
Neural Networks for Photometric Redshifts Evaluation [PDF]
, 2003 We present a neural network based approach to the determi- nation of photometric redshift, which is a very important parameter to find the depth of astronomical objects in the sky. The method was tested on the Sloan Digital Sky Survey Early Data Release reaching an accuracy comparable and, in some cases, better than Spectral Energy Distribution ...
R. Tagliaferri +5 more
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Photometric supernovae redshift systematics requirements
Physical Review D, 2019 Imaging surveys will find many tens to hundreds of thousands of Type Ia supernovae in the next decade, and measure their light curves. In addition to a need for characterizing their types and subtypes, a redshift is required to place them on a Hubble diagram to map the cosmological expansion.
Eric V. Linder, Ayan Mitra
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Revised SWIRE photometric redshifts [PDF]
Monthly Notices of the Royal Astronomical Society, 2012 12 pages, 28 figures, accepted for publication ...
Rowan-Robinson, Michael +3 more
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Photometric redshifts in the SWIRE Survey [PDF]
Monthly Notices of the Royal Astronomical Society, 2008 22 pages, 23 figures. Accepted for publication in MNRAS. Revised 28/2/08.
Rowan-Robinson, Michael +17 more
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High Redshift Candidates and the Nature of Small Galaxies in the Hubble Deep Field [PDF]
, 2003 We present results on two related topics: 1. A discussion of high redshift candidates (z>4.5), and 2. A study of very small galaxies at intermediate redshifts, both sets being detected in the region of the northern Hubble Deep Field covered by deep ...
Lisa J. Storrie‐Lombardi +3 more
core +2 more sources
Photometric Redshifts and High‐Redshift Galaxies [PDF]
Publications of the Astronomical Society of the Pacific, 1999 The Workshop "Photometric Redshifts and High‐Redshift Galaxies" was held at the Observatories of the Carnegie Institution of Washington, in Pasadena, California, on 1999 April 28–30. The 70 participants were greeted with atypically cool, overcast weather, but this did not cloud or dampen the discussions.
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CPz: Classification-aided photometric-redshift estimation [PDF]
Astronomy & Astrophysics, 2018 Broadband photometry offers a time and cost effective method to reconstruct the continuum emission of celestial objects. Thus, photometric redshift estimation has supported the scientific exploitation of extragalactic multiwavelength surveys for more than twenty years.
S. Fotopoulou, S. Paltani
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Identifying Active Galactic Nuclei at z ∼ 3 from the HETDEX Survey Using Machine Learning
The Astronomical Journal, 2023 We used data from the Hobby–Eberly Telescope Dark Energy Experiment (HETDEX) to study the incidence of AGN in continuum-selected galaxies at z ∼ 3.
Valentina Tardugno Poleo +11 more
doaj +1 more source
Target Selection and Sample Characterization for the DESI LOW-Z Secondary Target Program
The Astrophysical Journal, 2023 We introduce the DESI LOW- Z Secondary Target Survey, which combines the wide-area capabilities of the Dark Energy Spectroscopic Instrument (DESI) with an efficient, low-redshift target selection method.
Elise Darragh-Ford +41 more
doaj +1 more source
Photometric redshifts with surface brightness priors [PDF]
Monthly Notices of the Royal Astronomical Society, 2008 15 pages, 13 figures, matches published ...
Stabenau, Hans F. +2 more
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