The evolution of radio sources in the UKIDSS-DXS-XMM-LSS field

McAlpine, K.; Jarvis, Matt J.

doi:10.1111/j.1365-2966.2010.18191.x

Cited by 17 publications

(21 citation statements)

References 50 publications

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“…Smolčić et al (2009) produced 1.4 GHz luminosity functions using the VLA-COSMOS survey for AGN with 10 21 < L1.4−GHz < 10 26 W Hz −1 to z = 1.3 and found modest evolution, with L ∝ (1 + z) 0.8±0.1 , or Φ ∝ (1 + z) 1.1±0.1 , assuming pure luminosity and density evolution respectively. McAlpine & Jarvis (2011) found that low-luminosity sources evolve differently from their high-luminosity counterparts out to a redshift of z = 0.8 and the measured radio luminosity function was found to be consistent with an increase in the comoving space density of low-luminosity sources by a factor of 1.5. Simpson et al (2012) using deep S1.4 > 100 µJy radio imaging in the Suburu/XMM-Newton Deep Field, produced 1.4 GHz luminosity functions divided into the radio-loud and radio-quiet AGN populations.…”

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confidence: 70%

Galaxy And Mass Assembly (GAMA): the 325 MHz radio luminosity function of AGN and star-forming galaxies

Prescott

Mauch²,

Jarvis

et al. 2016

Mon. Not. R. Astron. Soc.

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confidence: 70%

Galaxy And Mass Assembly (GAMA): the 325 MHz radio luminosity function of AGN and star-forming galaxies

Prescott

Mauch²,

Jarvis

et al. 2016

Mon. Not. R. Astron. Soc.

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“…The weaker evolution seen in the FR I population (e.g. Clewley & Jarvis 2004; McAlpine & Jarvis 2011) is therefore a consequence of these objects being exclusively low‐luminosity sources. This view is supported by recent studies which show that FR I and FR II sources of similar luminosities display similar evolution (Rigby, Best & Snellen 2008), and suggests that a complete understanding of radio source evolution can only be obtained with the benefit of significant complementary data to aid in the classification of sources.…”

Section: Introductionmentioning

confidence: 99%

Radio imaging of the Subaru/XMM-NewtonDeep Field- III. Evolution of the radio luminosity function beyond z= 1

Simpson

Rawlings

Ivison

et al. 2012

Monthly Notices of the Royal Astronomical Society

118

145

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We present spectroscopic and 11‐band photometric redshifts for galaxies in the 100‐μJy Subaru/XMM–NewtonDeep Field radio source sample. We find good agreement between our redshift distribution and that predicted by the Square Kilometre Array (SKA) Simulated Skies project. We find no correlation between K‐band magnitude and radio flux, but show that sources with 1.4‐GHz flux densities below ∼1 mJy are fainter in the near‐infrared than brighter radio sources at the same redshift, and we discuss the implications of this result for spectroscopically incomplete samples where the K–z relation has been used to estimate redshifts. We use the infrared–radio correlation to separate our sample into radio‐loud and radio‐quiet objects and show that only radio‐loud hosts have spectral energy distributions consistent with predominantly old stellar populations, although the fraction of objects displaying such properties is a decreasing function of radio luminosity. We calculate the 1.4‐GHz radio luminosity function (RLF) in redshift bins to z= 4 and find that the space density of radio sources increases with lookback time to z≈ 2, with a more rapid increase for more powerful sources. We demonstrate that radio‐loud and radio‐quiet sources of the same radio luminosity evolve very differently. Radio‐quiet sources display strong evolution to z≈ 2 while radio‐loud active galactic nuclei below the break in the RLF evolve more modestly and show hints of a decline in their space density at z > 1, with this decline occurring later for lower‐luminosity objects. If the radio luminosities of these sources are a function of their black hole spins then slowly rotating black holes must have a plentiful fuel supply for longer, perhaps because they have yet to encounter the major merger that will spin them up and use the remaining gas in a major burst of star formation.

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“…Clewley & Jarvis (2004) used the V/V max test to show that low luminosity radio sources evolve differently from their more powerful, predominantly Fanaroff-Riley type II (FRII). McAlpine & Jarvis (2011) used V/V max test to investigate the cosmic evolution of low luminosity (L 1.4 GHz < 10 25 W Hz 1 sr 1 ) radio sources in the XMM Large Scale Structure survey field (XMM-LSS).…”

Section: Introductionmentioning

confidence: 99%

Cosmic evolution of star-forming galaxies to z ≃ 1.8 in the faint low-frequency radio source population

Ocran

Taylor

Vaccari

et al. 2019

Monthly Notices of the Royal Astronomical Society

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We study the properties of star-forming galaxies selected at 610 MHz with the GMRT in a survey covering ∼1.86 deg 2 down to a noise of ∼7.1 µJy / beam. These were identified by combining multiple classification diagnostics: optical, X-ray, infrared and radio data. Of the 1685 SFGs from the GMRT sample, 496 have spectroscopic redshifts whereas 1189 have photometric redshifts. We find that the IRRC of star-forming galaxies, quantified by the infrared-to-1.4 GHz radio luminosity ratio q IR , decreases with increasing redshift: q IR = 2.86 ± 0.04(1 + z) −0.20±0.02 out to z ∼ 1.8. We use the V/V max statistic to quantify the evolution of the co-moving space density of the SFG sample. Averaged over luminosity our results indicate V/V max to be 0.51 ± 0.06, which is consistent with no evolution in overall space density. However we find V/V max to be a function of radio luminosity, indicating strong luminosity evolution with redshift. We explore the evolution of the SFGs radio luminosity function by separating the source into five redshift bins and comparing to theoretical model predictions. We find a strong redshift trend that can be fitted with a pure luminosity evolution of the form L 610 MHz ∝ ( 1 + z) (2.95±0.19)−(0.50±0.15)z . We calculate the cosmic SFR density since z ∼ 1.5 by integrating the parametric fits of the evolved 610 MHz luminosity function. Our sample reproduces the expected steep decline in the star formation rate density since z ∼ 1.

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The evolution of radio sources in the UKIDSS-DXS-XMM-LSS field

Cited by 17 publications

References 50 publications

Galaxy And Mass Assembly (GAMA): the 325 MHz radio luminosity function of AGN and star-forming galaxies

Galaxy And Mass Assembly (GAMA): the 325 MHz radio luminosity function of AGN and star-forming galaxies

Radio imaging of the Subaru/XMM-NewtonDeep Field- III. Evolution of the radio luminosity function beyond z= 1

Cosmic evolution of star-forming galaxies to z ≃ 1.8 in the faint low-frequency radio source population

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