The z = 9-10 galaxy population in the Hubble Frontier Fields and CLASH surveys: the z = 9 luminosity function and further evidence for a smooth decline in ultraviolet luminosity density at z≥ 8

McLeod, D. J.; Dunlop, James

doi:10.1093/mnras/stw904

Cited by 234 publications

(255 citation statements)

References 51 publications

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“…The blue curve corresponds to the Schechter form of Bouwens et al (2015), while the magenta curve represents the evolution to z 8 of the z 7 DPL of Bowler et al (2017) according to Bouwens et al (2016). Bottom panel: here we compare our volume density estimate (red point) to measurements of the UV LF at z 9 Bouwens et al 2016;Calvi et al 2016;McLeod et al 2016;Ishigaki et al 2017). The blue curve represents the Schechter function from Bouwens et al (2016).…”

Section: Appendix a Inconsistent Flux Measurements And Interlopersmentioning

confidence: 99%

HST Imaging of the Brightest z ∼ 8–9 Galaxies from UltraVISTA: The Extreme Bright End of the UV Luminosity Function

Stefanon

Labbé

Bouwens

et al. 2017

ApJ

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We report on the discovery of three especially bright candidate z 8 phot  galaxies. Five sources were targeted for follow-up with the mag, 5s) NIR data from the UltraVISTA DR3 release, deep ground-based optical imaging from the CFHTLS and Suprime-Cam programs, and Spitzer/IRAC mosaics combining observations from the SMUVS and SPLASH programs. Through the refined spectral energy distributions, which now also include new HyperSuprimeCam g-, r-, i-, z-, and Y-band data, we confirm that 3/5 galaxies have robust z 8.0 8.7phot~-, consistent with the initial selection. The remaining 2/5 galaxies have a nominal z 2 phot~. However, with HST data alone, these objects have increased probability of being at z 9 . We measure mean UV continuum slopes 1.74 0.35 b = - for the three z 8 9 -galaxies, marginally bluer than similarly luminous z 4 6 -in CANDELS but consistent with previous measurements of similarly luminous galaxies at z 7 . The circularized effective radius for our brightest source is 0.9±0.3kpc, similar to previous measurements for a bright z 11 galaxy and bright z 7 galaxies. Finally, enlarging our sample to include the six brightest z 8 LBGs identified over UltraVISTA (i.e., including three other sources from Labbé et al.) we estimate for the first time the volume density of galaxies at the extreme bright end (M 22 UV~-mag) of the z 8 UV luminosity function. Despite this exceptional result, the still large statistical uncertainties do not allow us to discriminate between a Schechter and a double-power-law form.

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Section: Appendix a Inconsistent Flux Measurements And Interlopersmentioning

confidence: 99%

HST Imaging of the Brightest z ∼ 8–9 Galaxies from UltraVISTA: The Extreme Bright End of the UV Luminosity Function

Stefanon

Labbé

Bouwens

et al. 2017

ApJ

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“…Bouwens et al 2015;Finkelstein et al 2015;Bowler et al 2014;McLure et al 2013), and samples extending to z 9 (e.g. Oesch et al 2014;McLeod et al 2016). The selection of z > 6.5 LBGs requires deep near-infrared imaging to detect the rest-frame UV emission as it is redshifted beyond λ obs ∼ 1µm.…”

Section: Introductionmentioning

confidence: 99%

Unveiling the nature of brightz ≃ 7galaxies with theHubble Space Telescope

Bowler

Dunlop

McLure

et al. 2016

Mon. Not. R. Astron. Soc.

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We present new Hubble Space Telescope/Wide Field Camera 3 imaging of 25 extremely luminous (−23.2 ≤ M UV −21.2) Lyman-break galaxies (LBGs) at z 7. The sample was initially selected from 1.65 deg 2 of ground-based imaging in the UltraV-ISTA/COSMOS and UDS/SXDS fields, and includes the extreme Lyman-α emitters, 'Himiko' and 'CR7'. A deconfusion analysis of the deep Spitzer photometry available suggests that these galaxies exhibit strong rest-frame optical nebular emission lines (EW 0 (Hβ + [OIII]) > 600Å). We find that irregular, multiple-component morphologies suggestive of clumpy or merging systems are common ( f multi > 0.4) in bright z 7 galaxies, and ubiquitous at the very bright end (M UV < −22.5). The galaxies have half-light radii in the range r 1/2 ∼ 0.5-3 kpc. The size measurements provide the first determination of the size-luminosity relation at z 7 that extends to M UV ∼ −23. We find the relation to be steep with r 1/2 ∝ L 1/2 . Excluding clumpy, multi-component galaxies however, we find a shallower relation that implies an increased star-formation rate surface density in bright LBGs. Using the new, independent, HST /WFC3 data we confirm that the rest-frame UV luminosity function at z 7 favours a power-law decline at the bright-end, compared to an exponential Schechter function drop-off. Finally, these results have important implications for the Euclid mission, which we predict will detect > 1000 similarly bright galaxies at z 7. Our new HST imaging suggests that the vast majority of these galaxies will be spatially resolved by Euclid, mitigating concerns over dwarf star contamination.

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“…The key science driver of the FF programme is shedding light on the properties of galaxies at high redshift (z > 5), which are critically important for our understanding of the processes involved in the reionization of the Universe and are presently constrained only from the brightest galaxies discovered in blank-field surveys Menci et al 2016;Bouwens et al 2017Bouwens et al , 2016McLeod et al 2016;Vanzella et al 2017a,b;Livermore et al 2017;Wei et al 2017).…”

Section: Introductionmentioning

confidence: 99%

The ASTRODEEP Frontier Fields catalogues

Criscienzo

Merlin

Castellano

et al. 2017

A&A

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Aims. We present the multiwavelength photometry of two Frontier Fields massive galaxy clusters, MACS-J0717 and MACS-J1149, and their parallel fields, ranging from Hubble Space Telescope (HST) to ground-based K and Spitzer IRAC bands, and the public release of photometric redshifts and rest-frame properties of galaxies found in cluster and parallel pointings. This work was carried out within the ASTRODEEP project and aims to provide a reference for future investigations of extragalactic populations. Methods. To fully exploit the depth of the images and detect faint sources, we used an accurate procedure, which carefully removes the foreground light of bright cluster sources and the intra-cluster light thus enabling detection and measurement of accurate fluxes in crowded cluster regions. This same procedure has been successfully used to derive the photometric catalogue of MACS-J0416 and Abell-2744. Results. The obtained multiband photometry was used to derive photometric redshifts, magnification, and physical properties of sources. In line with the first two FF catalogues released by ASTRODEEP, the photometric redshifts reach ∼4% accuracy. Moreover we extend the presently available samples to galaxies intrinsically as faint as H160 ∼ 32-34 mag thanks to the magnification factors induced by strong gravitational lensing. Our analysis allows us to probe galaxy masses larger than 10 7 M and/or SFR = 0.1-1 M /yr out to redshift z > 6.

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The z = 9-10 galaxy population in the Hubble Frontier Fields and CLASH surveys: the z = 9 luminosity function and further evidence for a smooth decline in ultraviolet luminosity density at z≥ 8

Cited by 234 publications

References 51 publications

HST Imaging of the Brightest z ∼ 8–9 Galaxies from UltraVISTA: The Extreme Bright End of the UV Luminosity Function

HST Imaging of the Brightest z ∼ 8–9 Galaxies from UltraVISTA: The Extreme Bright End of the UV Luminosity Function

Unveiling the nature of brightz ≃ 7galaxies with theHubble Space Telescope

The ASTRODEEP Frontier Fields catalogues

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