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A 10 deg2 Lyman α survey at z=8.8 with spectroscopic follow-up: strong constraints on the luminosity function and implications for other surveys

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A 10 deg2 Lyman α survey at z=8.8 with spectroscopic follow-up : strong constraints on the luminosity function and implications for other surveys. / Matthee, Jorryt J. A.; Sobral, David; Swinbank, A. M.; Smail, Ian; Best, P. N.; Kim, Jae Woo; Franx, Marijn; Milvang-Jensen, Bo; Fynbo, Johan.

In: Monthly Notices of the Royal Astronomical Society, Vol. 440, No. 3, 21.05.2014, p. 2375-2387.

Research output: Contribution to journalJournal articlepeer-review

Harvard

Matthee, JJA, Sobral, D, Swinbank, AM, Smail, I, Best, PN, Kim, JW, Franx, M, Milvang-Jensen, B & Fynbo, J 2014, 'A 10 deg2 Lyman α survey at z=8.8 with spectroscopic follow-up: strong constraints on the luminosity function and implications for other surveys', Monthly Notices of the Royal Astronomical Society, vol. 440, no. 3, pp. 2375-2387. https://doi.org/10.1093/mnras/stu392

APA

Matthee, J. J. A., Sobral, D., Swinbank, A. M., Smail, I., Best, P. N., Kim, J. W., Franx, M., Milvang-Jensen, B., & Fynbo, J. (2014). A 10 deg2 Lyman α survey at z=8.8 with spectroscopic follow-up: strong constraints on the luminosity function and implications for other surveys. Monthly Notices of the Royal Astronomical Society, 440(3), 2375-2387. https://doi.org/10.1093/mnras/stu392

Vancouver

Matthee JJA, Sobral D, Swinbank AM, Smail I, Best PN, Kim JW et al. A 10 deg2 Lyman α survey at z=8.8 with spectroscopic follow-up: strong constraints on the luminosity function and implications for other surveys. Monthly Notices of the Royal Astronomical Society. 2014 May 21;440(3):2375-2387. https://doi.org/10.1093/mnras/stu392

Author

Matthee, Jorryt J. A. ; Sobral, David ; Swinbank, A. M. ; Smail, Ian ; Best, P. N. ; Kim, Jae Woo ; Franx, Marijn ; Milvang-Jensen, Bo ; Fynbo, Johan. / A 10 deg2 Lyman α survey at z=8.8 with spectroscopic follow-up : strong constraints on the luminosity function and implications for other surveys. In: Monthly Notices of the Royal Astronomical Society. 2014 ; Vol. 440, No. 3. pp. 2375-2387.

Bibtex

@article{224033f35173467c908f8e124a981a8b,
title = "A 10 deg2 Lyman α survey at z=8.8 with spectroscopic follow-up: strong constraints on the luminosity function and implications for other surveys",
abstract = "Candidate galaxies at redshifts of z ~ 10 are now being found in extremely deep surveys, probing very small areas. As a consequence, candidates are very faint, making spectroscopic confirmation practically impossible. In order to overcome such limitations, we have undertaken the CF-HiZELS survey, which is a large-area, medium-depth near-infrared narrow-band survey targeted at z = 8.8 Lyman α (Lyα) emitters (LAEs) and covering 10 deg2 in part of the SSA22 field with the Canada-France-Hawaii Telescope (CFHT). We surveyed a comoving volume of 4.7 × 106 Mpc3 to a Lyα luminosity limit of 6.3 × 1043 erg s-1. We look for Lyα candidates by applying the following criteria: (i) clear emission-line source, (ii) no optical detections (ugriz from CFHTLS), (iii) no visible detection in the optical stack (ugriz > 27), (iv) visually checked reliable NBJ and J detections and (v) J - K ≤ 0. We compute photometric redshifts and remove a significant amount of dusty lower redshift line-emitters at z ~ 1.4 or 2.2. A total of 13 Lyα candidates were found, of which two are marked as strong candidates, but the majority have very weak constraints on their spectral energy distributions. Using follow-up observations with SINFONI/VLT, we are able to exclude the most robust candidates as LAEs. We put a strong constraint on the Lyα luminosity function at z ~ 9 and make realistic predictions for ongoing and future surveys. Our results show that surveys for the highest redshift LAEs are susceptible of multiple contaminations and that spectroscopic follow-up is absolutely necessary.",
keywords = "Cosmology: observations, Dark ages, reionization, first stars, Galaxies: evolution, Galaxies: high-redshift",
author = "Matthee, {Jorryt J. A.} and David Sobral and Swinbank, {A. M.} and Ian Smail and Best, {P. N.} and Kim, {Jae Woo} and Marijn Franx and Bo Milvang-Jensen and Johan Fynbo",
year = "2014",
month = may,
day = "21",
doi = "10.1093/mnras/stu392",
language = "English",
volume = "440",
pages = "2375--2387",
journal = "Monthly Notices of the Royal Astronomical Society",
issn = "0035-8711",
publisher = "OXFORD UNIV PRESS",
number = "3",

}

RIS

TY - JOUR

T1 - A 10 deg2 Lyman α survey at z=8.8 with spectroscopic follow-up

T2 - strong constraints on the luminosity function and implications for other surveys

AU - Matthee, Jorryt J. A.

AU - Sobral, David

AU - Swinbank, A. M.

AU - Smail, Ian

AU - Best, P. N.

AU - Kim, Jae Woo

AU - Franx, Marijn

AU - Milvang-Jensen, Bo

AU - Fynbo, Johan

PY - 2014/5/21

Y1 - 2014/5/21

N2 - Candidate galaxies at redshifts of z ~ 10 are now being found in extremely deep surveys, probing very small areas. As a consequence, candidates are very faint, making spectroscopic confirmation practically impossible. In order to overcome such limitations, we have undertaken the CF-HiZELS survey, which is a large-area, medium-depth near-infrared narrow-band survey targeted at z = 8.8 Lyman α (Lyα) emitters (LAEs) and covering 10 deg2 in part of the SSA22 field with the Canada-France-Hawaii Telescope (CFHT). We surveyed a comoving volume of 4.7 × 106 Mpc3 to a Lyα luminosity limit of 6.3 × 1043 erg s-1. We look for Lyα candidates by applying the following criteria: (i) clear emission-line source, (ii) no optical detections (ugriz from CFHTLS), (iii) no visible detection in the optical stack (ugriz > 27), (iv) visually checked reliable NBJ and J detections and (v) J - K ≤ 0. We compute photometric redshifts and remove a significant amount of dusty lower redshift line-emitters at z ~ 1.4 or 2.2. A total of 13 Lyα candidates were found, of which two are marked as strong candidates, but the majority have very weak constraints on their spectral energy distributions. Using follow-up observations with SINFONI/VLT, we are able to exclude the most robust candidates as LAEs. We put a strong constraint on the Lyα luminosity function at z ~ 9 and make realistic predictions for ongoing and future surveys. Our results show that surveys for the highest redshift LAEs are susceptible of multiple contaminations and that spectroscopic follow-up is absolutely necessary.

AB - Candidate galaxies at redshifts of z ~ 10 are now being found in extremely deep surveys, probing very small areas. As a consequence, candidates are very faint, making spectroscopic confirmation practically impossible. In order to overcome such limitations, we have undertaken the CF-HiZELS survey, which is a large-area, medium-depth near-infrared narrow-band survey targeted at z = 8.8 Lyman α (Lyα) emitters (LAEs) and covering 10 deg2 in part of the SSA22 field with the Canada-France-Hawaii Telescope (CFHT). We surveyed a comoving volume of 4.7 × 106 Mpc3 to a Lyα luminosity limit of 6.3 × 1043 erg s-1. We look for Lyα candidates by applying the following criteria: (i) clear emission-line source, (ii) no optical detections (ugriz from CFHTLS), (iii) no visible detection in the optical stack (ugriz > 27), (iv) visually checked reliable NBJ and J detections and (v) J - K ≤ 0. We compute photometric redshifts and remove a significant amount of dusty lower redshift line-emitters at z ~ 1.4 or 2.2. A total of 13 Lyα candidates were found, of which two are marked as strong candidates, but the majority have very weak constraints on their spectral energy distributions. Using follow-up observations with SINFONI/VLT, we are able to exclude the most robust candidates as LAEs. We put a strong constraint on the Lyα luminosity function at z ~ 9 and make realistic predictions for ongoing and future surveys. Our results show that surveys for the highest redshift LAEs are susceptible of multiple contaminations and that spectroscopic follow-up is absolutely necessary.

KW - Cosmology: observations

KW - Dark ages, reionization, first stars

KW - Galaxies: evolution

KW - Galaxies: high-redshift

U2 - 10.1093/mnras/stu392

DO - 10.1093/mnras/stu392

M3 - Journal article

AN - SCOPUS:84898787236

VL - 440

SP - 2375

EP - 2387

JO - Monthly Notices of the Royal Astronomical Society

JF - Monthly Notices of the Royal Astronomical Society

SN - 0035-8711

IS - 3

ER -