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Title: Subaru narrow-band imaging search for Lyman continuum from galaxies at z > 3 in the GOODS-N field

Abstract

Abstract We report results of a search for galaxies at z > 3 with Lyman continuum (LyC) emission using a narrow-band filter NB359  with Subaru/Suprime-Cam in an ∼800 arcmin2 blank field around the GOODS-N. We use 103 star-forming galaxies (SFGs) and 8 active galactic nuclei (AGNs) with spectroscopic redshifts in a range between 3.06 and 3.5 and 157 photometrically selected z = 3.1 Lyman α emitter (LAE) candidates as the targets. After removing galaxies spectroscopically confirmed to be contaminated by foreground sources, we found two SFGs and one AGN as candidate LyC-emitting sources among the targets with spectroscopic redshifts. Among LAE candidates, five sources are detected in the NB359 image, and three among them may be contaminated by foreground sources. We compare the sample galaxies in the GOODS-N with those in the SSA22, where a prominent protocluster at z = 3.1 is known and an LyC search using the same NB359 filter has been made. The frequency of galaxies with LyC leakage in the SSA22 field may be about two times higher than that of galaxies in the GOODS-N with the sample ultraviolet (UV) magnitude range, although the numbers of LyC detections in these fields are too small to make a statistically significant conclusion. By combining the sample galaxies in these fields, we place the 3σ upper limits of the observed LyC-to-UV flux density ratio and LyC escape fraction for galaxies at z = 3.1 with absolute UV magnitude MUV < −18.8 as (fLyC/fUV)obs < 0.036 and $$f_\mathrm{esc}^\mathrm{abs}\,\lt\, 8$$ per cent, respectively.

Authors:
ORCiD logo [1]; ORCiD logo [2]; ORCiD logo [3];  [4];  [5]
  1. Subaru Telescope, National Astronomical Observatory of Japan, 650 North A’ohoku Place, Hilo, HI 96720, USA, Department of Astronomical Science, The Graduate University for Advanced Studies (Sokendai), 2-21-1 Osawa, Mitaka, Tokyo 181-8588, Japan, Department of Astronomy and Physics and Institute for Computational Astrophysics, Saint Mary’s University, 923 Robie Street, Halifax, Nova Scotia B3H 3C3, Canada
  2. Department of Environmental Science, Faculty of Design Technology, Osaka Sangyo University, 3-1-1 Nakagaito, Daito, Osaka 574-8530, Japan, Department of Physics, School of Advanced Science and Engineering, Waseda University, 3-4-1 Okubo, Shinjuku, Tokyo 169-8555, Japan, Waseda Research Institute for Science and Engineering, 3-4-1 Okubo, Shinjuku, Tokyo 169-8555, Japan
  3. Subaru Telescope, National Astronomical Observatory of Japan, 650 North A’ohoku Place, Hilo, HI 96720, USA, Leibniz Institut für Astrophysik, An der Sternwarte 16, D-14482 Potsdam, Germany
  4. Department of Astronomical Science, The Graduate University for Advanced Studies (Sokendai), 2-21-1 Osawa, Mitaka, Tokyo 181-8588, Japan, National Astronomical Observatory of Japan, 2-21-1 Osawa, Mitaka, Tokyo 181-8588, Japan
  5. Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, 3-1-1 Yoshinodai, Chuo-ku, Sagamihara City, Kanagawa 252-5210, Japan
Publication Date:
Sponsoring Org.:
USDOE
OSTI Identifier:
1557914
Resource Type:
Published Article
Journal Name:
Monthly Notices of the Royal Astronomical Society
Additional Journal Information:
Journal Name: Monthly Notices of the Royal Astronomical Society Journal Volume: 488 Journal Issue: 4; Journal ID: ISSN 0035-8711
Publisher:
Oxford University Press
Country of Publication:
United Kingdom
Language:
English

Citation Formats

Iwata, Ikuru, Inoue, Akio K., Micheva, Genoveva, Matsuda, Yuichi, and Yamada, Toru. Subaru narrow-band imaging search for Lyman continuum from galaxies at z > 3 in the GOODS-N field. United Kingdom: N. p., 2019. Web. https://doi.org/10.1093/mnras/stz2081.
Iwata, Ikuru, Inoue, Akio K., Micheva, Genoveva, Matsuda, Yuichi, & Yamada, Toru. Subaru narrow-band imaging search for Lyman continuum from galaxies at z > 3 in the GOODS-N field. United Kingdom. https://doi.org/10.1093/mnras/stz2081
Iwata, Ikuru, Inoue, Akio K., Micheva, Genoveva, Matsuda, Yuichi, and Yamada, Toru. Tue . "Subaru narrow-band imaging search for Lyman continuum from galaxies at z > 3 in the GOODS-N field". United Kingdom. https://doi.org/10.1093/mnras/stz2081.
@article{osti_1557914,
title = {Subaru narrow-band imaging search for Lyman continuum from galaxies at z > 3 in the GOODS-N field},
author = {Iwata, Ikuru and Inoue, Akio K. and Micheva, Genoveva and Matsuda, Yuichi and Yamada, Toru},
abstractNote = {Abstract We report results of a search for galaxies at z > 3 with Lyman continuum (LyC) emission using a narrow-band filter NB359  with Subaru/Suprime-Cam in an ∼800 arcmin2 blank field around the GOODS-N. We use 103 star-forming galaxies (SFGs) and 8 active galactic nuclei (AGNs) with spectroscopic redshifts in a range between 3.06 and 3.5 and 157 photometrically selected z = 3.1 Lyman α emitter (LAE) candidates as the targets. After removing galaxies spectroscopically confirmed to be contaminated by foreground sources, we found two SFGs and one AGN as candidate LyC-emitting sources among the targets with spectroscopic redshifts. Among LAE candidates, five sources are detected in the NB359 image, and three among them may be contaminated by foreground sources. We compare the sample galaxies in the GOODS-N with those in the SSA22, where a prominent protocluster at z = 3.1 is known and an LyC search using the same NB359 filter has been made. The frequency of galaxies with LyC leakage in the SSA22 field may be about two times higher than that of galaxies in the GOODS-N with the sample ultraviolet (UV) magnitude range, although the numbers of LyC detections in these fields are too small to make a statistically significant conclusion. By combining the sample galaxies in these fields, we place the 3σ upper limits of the observed LyC-to-UV flux density ratio and LyC escape fraction for galaxies at z = 3.1 with absolute UV magnitude MUV < −18.8 as (fLyC/fUV)obs < 0.036 and $f_\mathrm{esc}^\mathrm{abs}\,\lt\, 8$ per cent, respectively.},
doi = {10.1093/mnras/stz2081},
journal = {Monthly Notices of the Royal Astronomical Society},
number = 4,
volume = 488,
place = {United Kingdom},
year = {2019},
month = {7}
}

Journal Article:
Free Publicly Available Full Text
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https://doi.org/10.1093/mnras/stz2081

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New measurements of the ionizing ultraviolet background over 2 < z < 5 and implications for hydrogen reionization
journal, October 2013

  • Becker, George D.; Bolton, James S.
  • Monthly Notices of the Royal Astronomical Society, Vol. 436, Issue 2
  • DOI: 10.1093/mnras/stt1610

Detection of high Lyman continuum leakage from four low-redshift compact star-forming galaxies
journal, May 2016

  • Izotov, Y. I.; Schaerer, D.; Thuan, T. X.
  • Monthly Notices of the Royal Astronomical Society, Vol. 461, Issue 4
  • DOI: 10.1093/mnras/stw1205

Direct Lyman continuum and Ly α escape observed at redshift 4
journal, February 2018

  • Vanzella, E.; Nonino, M.; Cupani, G.
  • Monthly Notices of the Royal Astronomical Society: Letters, Vol. 476, Issue 1
  • DOI: 10.1093/mnrasl/sly023

3d-Hst Wfc3-Selected Photometric Catalogs in the five Candels/3d-Hst Fields: Photometry, Photometric Redshifts, and Stellar Masses
journal, October 2014

  • Skelton, Rosalind E.; Whitaker, Katherine E.; Momcheva, Ivelina G.
  • The Astrophysical Journal Supplement Series, Vol. 214, Issue 2
  • DOI: 10.1088/0067-0049/214/2/24

Galaxy Size Evolution at High Redshift and Surface Brightness Selection Effects: Constraints from the Hubble Ultra Deep Field
journal, July 2004

  • Bouwens, R. J.; Illingworth, G. D.; Blakeslee, J. P.
  • The Astrophysical Journal, Vol. 611, Issue 1
  • DOI: 10.1086/423786

THE COLUMN DENSITY DISTRIBUTION AND CONTINUUM OPACITY OF THE INTERGALACTIC AND CIRCUMGALACTIC MEDIUM AT REDSHIFT ⟨ z ⟩ = 2.4
journal, May 2013


EAZY: A Fast, Public Photometric Redshift Code
journal, October 2008

  • Brammer, Gabriel B.; van Dokkum, Pieter G.; Coppi, Paolo
  • The Astrophysical Journal, Vol. 686, Issue 2
  • DOI: 10.1086/591786