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Photometric redshifts for the next generation of deep radio continuum surveys - I: Template fitting
- Source :
- Duncan, K J, Brown, M J I, Williams, W L, Best, P N, Buat, V, Burgarella, D, Jarvis, M J, Małek, K, Oliver, S J, Röttgering, H J A & Smith, D J B 2017, ' Photometric redshifts for the next generation of deep radio continuum surveys-I. Template fitting ', Monthly Notices of the Royal Astronomical Society, vol. 473, no. 2, pp. 2655-2672 . https://doi.org/10.1093/mnras/stx2536, Monthly Notices of the Royal Astronomical Society, 473(2), 2655-2672, Monthly Notices of the Royal Astronomical Society, Monthly Notices of the Royal Astronomical Society, 2018, 473 (2), pp.2655-2672. ⟨10.1093/mnras/stx2536⟩, Monthly Notices of the Royal Astronomical Society, Oxford University Press (OUP): Policy P-Oxford Open Option A, 2018, 473 (2), pp.2655-2672. ⟨10.1093/mnras/stx2536⟩
- Publication Year :
- 2017
-
Abstract
- We present a study of photometric redshift performance for galaxies and active galactic nuclei detected in deep radio continuum surveys. Using two multi-wavelength datasets, over the NOAO Deep Wide Field Survey Bo\"otes and COSMOS fields, we assess photometric redshift (photo-z) performance for a sample of $\sim 4,500$ radio continuum sources with spectroscopic redshifts relative to those of $\sim 63,000$ non radio-detected sources in the same fields. We investigate the performance of three photometric redshift template sets as a function of redshift, radio luminosity and infrared/X-ray properties. We find that no single template library is able to provide the best performance across all subsets of the radio detected population, with variation in the optimum template set both between subsets and between fields. Through a hierarchical Bayesian combination of the photo-z estimates from all three template sets, we are able to produce a consensus photo-z estimate which equals or improves upon the performance of any individual template set.<br />Comment: 20 pages, 17 figures. Accepted for publication in MNRAS
- Subjects :
- Active galactic nucleus
Astrophysics::High Energy Astrophysical Phenomena
Population
Continuum (design consultancy)
FOS: Physical sciences
Astrophysics
Astrophysics::Cosmology and Extragalactic Astrophysics
01 natural sciences
Luminosity
0103 physical sciences
education
010303 astronomy & astrophysics
ComputingMilieux_MISCELLANEOUS
Astrophysics::Galaxy Astrophysics
Photometric redshift
QB
Physics
education.field_of_study
[SDU.ASTR]Sciences of the Universe [physics]/Astrophysics [astro-ph]
010308 nuclear & particles physics
Astronomy and Astrophysics
BOOTES
Astrophysics - Astrophysics of Galaxies
Galaxy
Redshift
galaxies [radio continuum]
Space and Planetary Science
Astrophysics of Galaxies (astro-ph.GA)
active [galaxies]
distances and redshifts [galaxies]
[PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph]
Subjects
Details
- Language :
- English
- ISSN :
- 00358711 and 13652966
- Database :
- OpenAIRE
- Journal :
- Duncan, K J, Brown, M J I, Williams, W L, Best, P N, Buat, V, Burgarella, D, Jarvis, M J, Małek, K, Oliver, S J, Röttgering, H J A & Smith, D J B 2017, ' Photometric redshifts for the next generation of deep radio continuum surveys-I. Template fitting ', Monthly Notices of the Royal Astronomical Society, vol. 473, no. 2, pp. 2655-2672 . https://doi.org/10.1093/mnras/stx2536, Monthly Notices of the Royal Astronomical Society, 473(2), 2655-2672, Monthly Notices of the Royal Astronomical Society, Monthly Notices of the Royal Astronomical Society, 2018, 473 (2), pp.2655-2672. ⟨10.1093/mnras/stx2536⟩, Monthly Notices of the Royal Astronomical Society, Oxford University Press (OUP): Policy P-Oxford Open Option A, 2018, 473 (2), pp.2655-2672. ⟨10.1093/mnras/stx2536⟩
- Accession number :
- edsair.doi.dedup.....2fa02b59efe39f146656c103194a258e
- Full Text :
- https://doi.org/10.1093/mnras/stx2536