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  • 2008.01731v1

    Rights statement: This is a pre-copy-editing, author-produced PDF of an article accepted for publication in Monthly Notices of the Royal Astronomical Society following peer review. The definitive publisher-authenticated version Jorryt Matthee, Gabriele Pezzulli, Ruari Mackenzie, Sebastiano Cantalupo, Haruka Kusakabe, Floriane Leclercq, David Sobral, Johan Richard, Lutz Wisotzki, Simon Lilly, Leindert Boogaard, Raffaella Marino, Michael Maseda, Themiya Nanayakkara, The nature of CR7 revealed with MUSE: a young starburst powering extended Lyman-α emission at z=6.6, Monthly Notices of the Royal Astronomical Society, 498, (2) , is available online at: https://academic.oup.com/mnras/article-abstract/498/2/3043/5895981

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The nature of CR7 revealed with MUSE: A young starburst powering extended Lyman-α emission at z=6.6

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The nature of CR7 revealed with MUSE : A young starburst powering extended Lyman-α emission at z=6.6. / Matthee, Jorryt; Pezzulli, Gabriele; Mackenzie, Ruari; Cantalupo, Sebastiano; Kusakabe, Haruka; Leclercq, Floriane; Sobral, David; Richard, Johan; Wisotzki, Lutz; Lilly, Simon; Boogaard, Leindert; Marino, Raffaella; Maseda, Michael; Nanayakkara, Themiya.

In: Monthly Notices of the Royal Astronomical Society, Vol. 498, No. 2, 01.10.2020, p. 3043–3059.

Research output: Contribution to journalJournal articlepeer-review

Harvard

Matthee, J, Pezzulli, G, Mackenzie, R, Cantalupo, S, Kusakabe, H, Leclercq, F, Sobral, D, Richard, J, Wisotzki, L, Lilly, S, Boogaard, L, Marino, R, Maseda, M & Nanayakkara, T 2020, 'The nature of CR7 revealed with MUSE: A young starburst powering extended Lyman-α emission at z=6.6', Monthly Notices of the Royal Astronomical Society, vol. 498, no. 2, pp. 3043–3059. https://doi.org/10.1093/mnras/staa2550

APA

Matthee, J., Pezzulli, G., Mackenzie, R., Cantalupo, S., Kusakabe, H., Leclercq, F., Sobral, D., Richard, J., Wisotzki, L., Lilly, S., Boogaard, L., Marino, R., Maseda, M., & Nanayakkara, T. (2020). The nature of CR7 revealed with MUSE: A young starburst powering extended Lyman-α emission at z=6.6. Monthly Notices of the Royal Astronomical Society, 498(2), 3043–3059. https://doi.org/10.1093/mnras/staa2550

Vancouver

Matthee J, Pezzulli G, Mackenzie R, Cantalupo S, Kusakabe H, Leclercq F et al. The nature of CR7 revealed with MUSE: A young starburst powering extended Lyman-α emission at z=6.6. Monthly Notices of the Royal Astronomical Society. 2020 Oct 1;498(2):3043–3059. https://doi.org/10.1093/mnras/staa2550

Author

Matthee, Jorryt ; Pezzulli, Gabriele ; Mackenzie, Ruari ; Cantalupo, Sebastiano ; Kusakabe, Haruka ; Leclercq, Floriane ; Sobral, David ; Richard, Johan ; Wisotzki, Lutz ; Lilly, Simon ; Boogaard, Leindert ; Marino, Raffaella ; Maseda, Michael ; Nanayakkara, Themiya. / The nature of CR7 revealed with MUSE : A young starburst powering extended Lyman-α emission at z=6.6. In: Monthly Notices of the Royal Astronomical Society. 2020 ; Vol. 498, No. 2. pp. 3043–3059.

Bibtex

@article{2061e3bf80874f578fb93f902adf99c7,
title = "The nature of CR7 revealed with MUSE: A young starburst powering extended Lyman-α emission at z=6.6",
abstract = "CR7 is among the most luminous Lyman-α emitters (LAEs) known at z = 6.6 and consists of at least three UV components that are surrounded by Lyman-α (Lyα) emission. Previous studies have suggested that it may host an extreme ionising source. Here, we present deep integral field spectroscopy of CR7 with VLT/MUSE. We measure extended emission with a similar halo scale length as typical LAEs at z ≈ 5. CR7{\textquoteright}s Lyα halo is clearly elongated along the direction connecting the multiple components, likely tracing the underlying gas distribution. The Lyα emission originates almost exclusively from the brightest UV component, but we also identify a faint kinematically distinct Lyα emitting region nearby a fainter component. Combined with new near-infrared data, the MUSE data show that the rest-frame Lyα equivalent width (EW) is ≈100 {\AA}. This is a factor four higher than the EW measured in low-redshift analogues with carefully matched Lyα profiles (and thus arguably HI column density), but this EW can plausibly be explained by star formation. Alternative scenarios requiring AGN powering are also disfavoured by the narrower and steeper Lyα spectrum and much smaller IR to UV ratio compared to obscured AGN in other Lyα blobs. CR7{\textquoteright}s Lyα emission, while extremely luminous, resembles the emission in more common LAEs at lower redshifts very well and is likely powered by a young metal poor starburst.",
keywords = "astro-ph.GA",
author = "Jorryt Matthee and Gabriele Pezzulli and Ruari Mackenzie and Sebastiano Cantalupo and Haruka Kusakabe and Floriane Leclercq and David Sobral and Johan Richard and Lutz Wisotzki and Simon Lilly and Leindert Boogaard and Raffaella Marino and Michael Maseda and Themiya Nanayakkara",
note = "This is a pre-copy-editing, author-produced PDF of an article accepted for publication in Monthly Notices of the Royal Astronomical Society following peer review. The definitive publisher-authenticated version Jorryt Matthee, Gabriele Pezzulli, Ruari Mackenzie, Sebastiano Cantalupo, Haruka Kusakabe, Floriane Leclercq, David Sobral, Johan Richard, Lutz Wisotzki, Simon Lilly, Leindert Boogaard, Raffaella Marino, Michael Maseda, Themiya Nanayakkara, The nature of CR7 revealed with MUSE: a young starburst powering extended Lyman-α emission at z=6.6, Monthly Notices of the Royal Astronomical Society, 498, (2) , is available online at: https://academic.oup.com/mnras/article-abstract/498/2/3043/5895981",
year = "2020",
month = oct,
day = "1",
doi = "10.1093/mnras/staa2550",
language = "English",
volume = "498",
pages = "3043–3059",
journal = "Monthly Notices of the Royal Astronomical Society",
issn = "0035-8711",
publisher = "OXFORD UNIV PRESS",
number = "2",

}

RIS

TY - JOUR

T1 - The nature of CR7 revealed with MUSE

T2 - A young starburst powering extended Lyman-α emission at z=6.6

AU - Matthee, Jorryt

AU - Pezzulli, Gabriele

AU - Mackenzie, Ruari

AU - Cantalupo, Sebastiano

AU - Kusakabe, Haruka

AU - Leclercq, Floriane

AU - Sobral, David

AU - Richard, Johan

AU - Wisotzki, Lutz

AU - Lilly, Simon

AU - Boogaard, Leindert

AU - Marino, Raffaella

AU - Maseda, Michael

AU - Nanayakkara, Themiya

N1 - This is a pre-copy-editing, author-produced PDF of an article accepted for publication in Monthly Notices of the Royal Astronomical Society following peer review. The definitive publisher-authenticated version Jorryt Matthee, Gabriele Pezzulli, Ruari Mackenzie, Sebastiano Cantalupo, Haruka Kusakabe, Floriane Leclercq, David Sobral, Johan Richard, Lutz Wisotzki, Simon Lilly, Leindert Boogaard, Raffaella Marino, Michael Maseda, Themiya Nanayakkara, The nature of CR7 revealed with MUSE: a young starburst powering extended Lyman-α emission at z=6.6, Monthly Notices of the Royal Astronomical Society, 498, (2) , is available online at: https://academic.oup.com/mnras/article-abstract/498/2/3043/5895981

PY - 2020/10/1

Y1 - 2020/10/1

N2 - CR7 is among the most luminous Lyman-α emitters (LAEs) known at z = 6.6 and consists of at least three UV components that are surrounded by Lyman-α (Lyα) emission. Previous studies have suggested that it may host an extreme ionising source. Here, we present deep integral field spectroscopy of CR7 with VLT/MUSE. We measure extended emission with a similar halo scale length as typical LAEs at z ≈ 5. CR7’s Lyα halo is clearly elongated along the direction connecting the multiple components, likely tracing the underlying gas distribution. The Lyα emission originates almost exclusively from the brightest UV component, but we also identify a faint kinematically distinct Lyα emitting region nearby a fainter component. Combined with new near-infrared data, the MUSE data show that the rest-frame Lyα equivalent width (EW) is ≈100 Å. This is a factor four higher than the EW measured in low-redshift analogues with carefully matched Lyα profiles (and thus arguably HI column density), but this EW can plausibly be explained by star formation. Alternative scenarios requiring AGN powering are also disfavoured by the narrower and steeper Lyα spectrum and much smaller IR to UV ratio compared to obscured AGN in other Lyα blobs. CR7’s Lyα emission, while extremely luminous, resembles the emission in more common LAEs at lower redshifts very well and is likely powered by a young metal poor starburst.

AB - CR7 is among the most luminous Lyman-α emitters (LAEs) known at z = 6.6 and consists of at least three UV components that are surrounded by Lyman-α (Lyα) emission. Previous studies have suggested that it may host an extreme ionising source. Here, we present deep integral field spectroscopy of CR7 with VLT/MUSE. We measure extended emission with a similar halo scale length as typical LAEs at z ≈ 5. CR7’s Lyα halo is clearly elongated along the direction connecting the multiple components, likely tracing the underlying gas distribution. The Lyα emission originates almost exclusively from the brightest UV component, but we also identify a faint kinematically distinct Lyα emitting region nearby a fainter component. Combined with new near-infrared data, the MUSE data show that the rest-frame Lyα equivalent width (EW) is ≈100 Å. This is a factor four higher than the EW measured in low-redshift analogues with carefully matched Lyα profiles (and thus arguably HI column density), but this EW can plausibly be explained by star formation. Alternative scenarios requiring AGN powering are also disfavoured by the narrower and steeper Lyα spectrum and much smaller IR to UV ratio compared to obscured AGN in other Lyα blobs. CR7’s Lyα emission, while extremely luminous, resembles the emission in more common LAEs at lower redshifts very well and is likely powered by a young metal poor starburst.

KW - astro-ph.GA

U2 - 10.1093/mnras/staa2550

DO - 10.1093/mnras/staa2550

M3 - Journal article

VL - 498

SP - 3043

EP - 3059

JO - Monthly Notices of the Royal Astronomical Society

JF - Monthly Notices of the Royal Astronomical Society

SN - 0035-8711

IS - 2

ER -