Journal article

Inferences on the timeline of reionization at z similar to 8 from the KMOS Lens-Amplified Spectroscopic Survey

Charlotte A Mason, Adriano Fontana, Tommaso Treu, Kasper B Schmidt, Austin Hoag, Louis Abramson, Ricardo Amorin, Marusa Bradac, Lucia Guaita, Tucker Jones, Alaina Henry, Matthew A Malkan, Laura Pentericci, Michele Trenti, Eros Vanzella

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | OXFORD UNIV PRESS | Published : 2019

Abstract

Detections and non-detections of Lyman alpha (Lyα) emission from z > 6 galaxies ( 7, where Lyα redshifts to near infra-red wavelengths. Here we present a search for z > 7.2 Lyα emission in 53 intrinsically faint Lyman Break Galaxy candidates, gravitationally lensed by massive galaxy clusters, in the KMOS Lens-Amplified Spectroscopic Survey (KLASS). With integration times of ∼7-10 h, we detect no Lyα emission with signal-to-noise ratio (S/N) > 5 in our sample. We determine our observations to be 80 per cent complete for 5σ spatially and spectrally unresolved emission lines with integrated line flux >5.7 × 10−18 erg s−1 cm−2. We define a photometrically selected sub-sample of 29 targets at z =..

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University of Melbourne Researchers

Grants

Awarded by NASA Headquarters through the NASA Earth and Space Science Fellowship Program - Space Telescope Science Institute


Awarded by NASA Headquarters through the NASA Hubble Fellowship - Space Telescope Science Institute


Awarded by NASA


Awarded by HST GLASS grant


Awarded by HST BoRG grants



Funding Acknowledgements

C.M. acknowledges support by NASA Headquarters through the NASA Earth and Space Science Fellowship Program Grant NNX16AO85H, and through the NASA Hubble Fellowship grant HST-HF2-51413.001-A awarded by the Space Telescope Science Institute, which is operated by the Association of Universities for Research in Astronomy, Inc., for NASA, under contract NAS526555. This work was supported by the HST GLASS grant GO-13459, the HST BoRG grants GO-12572, 12905, 13767, and 15212, and HST-AR-13235 and HST-AR-14280.This work utilizes gravitational lensing models produced by PIs Bradac, Natarajan & Kneib (CATS), Merten & Zitrin, Sharon, Williams, Keeton, Bernstein and Diego, and the GLAFIC group. This lens modelling was partially funded by the HST Frontier Fields program conducted by STScI. The lens models were obtained from the Mikulski Archive for Space Telescopes (MAST).