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A multiply imaged z ∼ 6.3 Lyman α emitter candidate behind Abell 2261

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A multiply imaged z ∼ 6.3 Lyman α emitter candidate behind Abell 2261. / Rydberg, Claes-Erik; Zitrin, Adi; Zackrisson, Erik; Melinder, Jens; Whalen, Daniel J.; Klessen, Ralf S.; Gonzalez, Juan; Östlin, Göran; Carollo, Daniela.

In: Monthly Notices of the Royal Astronomical Society, Vol. 467, No. 1, 05.2017, p. 768-777.

Research output: Contribution to journalArticlepeer-review

Harvard

Rydberg, C-E, Zitrin, A, Zackrisson, E, Melinder, J, Whalen, DJ, Klessen, RS, Gonzalez, J, Östlin, G & Carollo, D 2017, 'A multiply imaged z ∼ 6.3 Lyman α emitter candidate behind Abell 2261', Monthly Notices of the Royal Astronomical Society, vol. 467, no. 1, pp. 768-777. https://doi.org/10.1093/mnras/stx157

APA

Rydberg, C-E., Zitrin, A., Zackrisson, E., Melinder, J., Whalen, D. J., Klessen, R. S., Gonzalez, J., Östlin, G., & Carollo, D. (2017). A multiply imaged z ∼ 6.3 Lyman α emitter candidate behind Abell 2261. Monthly Notices of the Royal Astronomical Society, 467(1), 768-777. https://doi.org/10.1093/mnras/stx157

Vancouver

Rydberg C-E, Zitrin A, Zackrisson E, Melinder J, Whalen DJ, Klessen RS et al. A multiply imaged z ∼ 6.3 Lyman α emitter candidate behind Abell 2261. Monthly Notices of the Royal Astronomical Society. 2017 May;467(1):768-777. https://doi.org/10.1093/mnras/stx157

Author

Rydberg, Claes-Erik ; Zitrin, Adi ; Zackrisson, Erik ; Melinder, Jens ; Whalen, Daniel J. ; Klessen, Ralf S. ; Gonzalez, Juan ; Östlin, Göran ; Carollo, Daniela. / A multiply imaged z ∼ 6.3 Lyman α emitter candidate behind Abell 2261. In: Monthly Notices of the Royal Astronomical Society. 2017 ; Vol. 467, No. 1. pp. 768-777.

Bibtex

@article{822d879fccbd4777bbd397b2c68009ef,
title = "A multiply imaged z ∼ 6.3 Lyman α emitter candidate behind Abell 2261",
abstract = "While the Lyman α (Ly α) emission line serves as an important tool in the study of galaxies at z ≲ 6, finding Ly α emitters (LAE) at significantly higher redshifts has been more challenging, probably because of the increasing neutrality of the intergalactic medium above z ∼ 6. Galaxies with extremely high rest-frame Ly α equivalent widths, EW(Ly α) ≳ 150 {\AA}, at z > 6, are good candidates for Ly α follow-up observations, and can stand out in multiband imaging surveys because of their unusual colours. We have conducted a photometric search for such objects in the Cluster Lensing And Supernova survey with Hubble (CLASH), and report here the identification of three likely gravitationally lensed images of a single LAE candidate at z ∼ 6.3, behind the galaxy cluster Abell 2261 (z = 0.225). In the process, we also measured with Keck/Multi-Object Spectrometer For Infra-Red Exploration the first spectroscopic redshift of a multiply imaged galaxy behind Abell 2261, at z = 3.337. This allows us to calibrate the lensing model, which, in turn, is used to study the properties of the candidate LAE. Population III galaxy spectral energy distribution model fits to the CLASH broad-band photometry of the possible LAE provide a slightly better fit than Population I/II models. The best-fitting model suggests intrinsic EW(Ly α) ≈160 {\AA} after absorption in the interstellar and intergalactic medium. Future spectroscopic observations will examine this prediction as well as shed more light on the morphology of this object, which indicates that it may be a merger of two smaller galaxies.",
keywords = "astro-ph.GA, astro-ph.CO, gravitational lensing: strong, stars: Population III, galaxies: clusters: individual: Abell 2261, galaxies: high-redshift, cosmology: observations, dark ages, reionization, first stars",
author = "Claes-Erik Rydberg and Adi Zitrin and Erik Zackrisson and Jens Melinder and Whalen, {Daniel J.} and Klessen, {Ralf S.} and Juan Gonzalez and G{\"o}ran {\"O}stlin and Daniela Carollo",
note = "13 pages, 6 figures",
year = "2017",
month = may,
doi = "10.1093/mnras/stx157",
language = "English",
volume = "467",
pages = "768--777",
journal = "MNRAS",
issn = "0035-8711",
publisher = "Oxford University Press",
number = "1",

}

RIS

TY - JOUR

T1 - A multiply imaged z ∼ 6.3 Lyman α emitter candidate behind Abell 2261

AU - Rydberg, Claes-Erik

AU - Zitrin, Adi

AU - Zackrisson, Erik

AU - Melinder, Jens

AU - Whalen, Daniel J.

AU - Klessen, Ralf S.

AU - Gonzalez, Juan

AU - Östlin, Göran

AU - Carollo, Daniela

N1 - 13 pages, 6 figures

PY - 2017/5

Y1 - 2017/5

N2 - While the Lyman α (Ly α) emission line serves as an important tool in the study of galaxies at z ≲ 6, finding Ly α emitters (LAE) at significantly higher redshifts has been more challenging, probably because of the increasing neutrality of the intergalactic medium above z ∼ 6. Galaxies with extremely high rest-frame Ly α equivalent widths, EW(Ly α) ≳ 150 Å, at z > 6, are good candidates for Ly α follow-up observations, and can stand out in multiband imaging surveys because of their unusual colours. We have conducted a photometric search for such objects in the Cluster Lensing And Supernova survey with Hubble (CLASH), and report here the identification of three likely gravitationally lensed images of a single LAE candidate at z ∼ 6.3, behind the galaxy cluster Abell 2261 (z = 0.225). In the process, we also measured with Keck/Multi-Object Spectrometer For Infra-Red Exploration the first spectroscopic redshift of a multiply imaged galaxy behind Abell 2261, at z = 3.337. This allows us to calibrate the lensing model, which, in turn, is used to study the properties of the candidate LAE. Population III galaxy spectral energy distribution model fits to the CLASH broad-band photometry of the possible LAE provide a slightly better fit than Population I/II models. The best-fitting model suggests intrinsic EW(Ly α) ≈160 Å after absorption in the interstellar and intergalactic medium. Future spectroscopic observations will examine this prediction as well as shed more light on the morphology of this object, which indicates that it may be a merger of two smaller galaxies.

AB - While the Lyman α (Ly α) emission line serves as an important tool in the study of galaxies at z ≲ 6, finding Ly α emitters (LAE) at significantly higher redshifts has been more challenging, probably because of the increasing neutrality of the intergalactic medium above z ∼ 6. Galaxies with extremely high rest-frame Ly α equivalent widths, EW(Ly α) ≳ 150 Å, at z > 6, are good candidates for Ly α follow-up observations, and can stand out in multiband imaging surveys because of their unusual colours. We have conducted a photometric search for such objects in the Cluster Lensing And Supernova survey with Hubble (CLASH), and report here the identification of three likely gravitationally lensed images of a single LAE candidate at z ∼ 6.3, behind the galaxy cluster Abell 2261 (z = 0.225). In the process, we also measured with Keck/Multi-Object Spectrometer For Infra-Red Exploration the first spectroscopic redshift of a multiply imaged galaxy behind Abell 2261, at z = 3.337. This allows us to calibrate the lensing model, which, in turn, is used to study the properties of the candidate LAE. Population III galaxy spectral energy distribution model fits to the CLASH broad-band photometry of the possible LAE provide a slightly better fit than Population I/II models. The best-fitting model suggests intrinsic EW(Ly α) ≈160 Å after absorption in the interstellar and intergalactic medium. Future spectroscopic observations will examine this prediction as well as shed more light on the morphology of this object, which indicates that it may be a merger of two smaller galaxies.

KW - astro-ph.GA

KW - astro-ph.CO

KW - gravitational lensing: strong

KW - stars: Population III

KW - galaxies: clusters: individual: Abell 2261

KW - galaxies: high-redshift

KW - cosmology: observations

KW - dark ages, reionization, first stars

U2 - 10.1093/mnras/stx157

DO - 10.1093/mnras/stx157

M3 - Article

VL - 467

SP - 768

EP - 777

JO - MNRAS

JF - MNRAS

SN - 0035-8711

IS - 1

ER -

ID: 6800463