Jades: JADES: The emergence and evolution of Lyα emission and constraints on the intergalactic medium neutral fraction

Gareth C. Jones; Andrew J. Bunker; Aayush Saxena; Joris Witstok; Daniel P. Stark; Santiago Arribas; William M. Baker; Rachana Bhatawdekar; Rebecca Bowler; Kristan Boyett; Alex J. Cameron; Stefano Carniani; Stephane Charlot; Jacopo Chevallard; Mirko Curti; Emma Curtis-Lake; Daniel J. Eisenstein; Kevin Hainline; Ryan Hausen; Zhiyuan Ji; Benjamin D. Johnson; Nimisha Kumari; Tobias J. Looser; Roberto Maiolino; Michael V. Maseda; Eleonora Parlanti; Hans-Walter Rix; Brant E. Robertson; Lester Sandles; Jan Scholtz; Renske Smit; Sandro Tacchella; Hannah Ubler; Chris Willott

doi:10.1051/0004-6361/202347099

Jades: JADES: The emergence and evolution of Lyα emission and constraints on the intergalactic medium neutral fraction

Gareth C. Jones, Andrew J. Bunker, Aayush Saxena, Joris Witstok, Daniel P. Stark, Santiago Arribas, William M. Baker, Rachana Bhatawdekar, Rebecca Bowler, Kristan Boyett, Alex J. Cameron, Stefano Carniani, Stephane Charlot, Jacopo Chevallard, Mirko Curti, Emma Curtis-Lake, Daniel J. Eisenstein, Kevin Hainline, Ryan Hausen, Zhiyuan JiBenjamin D. Johnson, Nimisha Kumari, Tobias J. Looser, Roberto Maiolino, Michael V. Maseda, Eleonora Parlanti, Hans-Walter Rix, Brant E. Robertson, Lester Sandles, Jan Scholtz, Renske Smit, Sandro Tacchella, Hannah Ubler, Chris Willott

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Abstract

The rest-frame UV recombination emission line Ly$\alpha$ can be powered by ionising photons from young massive stars in star forming galaxies, but its ability to be resonantly scattered by neutral gas complicates its interpretation. For reionization era galaxies, a neutral intergalactic medium (IGM) will scatter Ly$\alpha$ from the line of sight, making Ly$\alpha$ a useful probe of the neutral fraction evolution. Here, we explore Ly$\alpha$ in JWST/NIRSpec spectra from the ongoing JADES programme, which targets hundreds of galaxies in the well-studied GOODS-S and GOODS-N fields. These sources are UV-faint ($-20.45.6$ (as derived with optical lines) are fit with line and continuum models, in order to search for significant line emission. Through exploration of the R100 data, we find evidence for Ly$\alpha$ in 17 sources. This sample allows us to place observational constraints on the fraction of galaxies with Ly$\alpha$ emission in the redshift range $5.6

Original language	English
Article number	A238
Number of pages	17
Journal	Astronomy & Astrophysics
Volume	683
DOIs	https://doi.org/10.1051/0004-6361/202347099
Publication status	Published - 22 Mar 2024

Keywords

astro-ph.GA

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10.1051/0004-6361/202347099Licence: CC BY

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© The Authors 2024. This is Open Access article, published by EDP Sciences, under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Final published version, 2.36 MBLicence: CC BY

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Jones, G. C., Bunker, A. J., Saxena, A., Witstok, J., Stark, D. P., Arribas, S., Baker, W. M., Bhatawdekar, R., Bowler, R., Boyett, K., Cameron, A. J., Carniani, S., Charlot, S., Chevallard, J., Curti, M., Curtis-Lake, E., Eisenstein, D. J., Hainline, K., Hausen, R., ... Willott, C. (2024). Jades: JADES: The emergence and evolution of Lyα emission and constraints on the intergalactic medium neutral fraction. Astronomy & Astrophysics, 683, Article A238. https://doi.org/10.1051/0004-6361/202347099

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title = "Jades: JADES: The emergence and evolution of Lyα emission and constraints on the intergalactic medium neutral fraction",

abstract = "The rest-frame UV recombination emission line Ly$\alpha$ can be powered by ionising photons from young massive stars in star forming galaxies, but its ability to be resonantly scattered by neutral gas complicates its interpretation. For reionization era galaxies, a neutral intergalactic medium (IGM) will scatter Ly$\alpha$ from the line of sight, making Ly$\alpha$ a useful probe of the neutral fraction evolution. Here, we explore Ly$\alpha$ in JWST/NIRSpec spectra from the ongoing JADES programme, which targets hundreds of galaxies in the well-studied GOODS-S and GOODS-N fields. These sources are UV-faint ($-20.45.6$ (as derived with optical lines) are fit with line and continuum models, in order to search for significant line emission. Through exploration of the R100 data, we find evidence for Ly$\alpha$ in 17 sources. This sample allows us to place observational constraints on the fraction of galaxies with Ly$\alpha$ emission in the redshift range $5.6",

keywords = "astro-ph.GA",

author = "Jones, {Gareth C.} and Bunker, {Andrew J.} and Aayush Saxena and Joris Witstok and Stark, {Daniel P.} and Santiago Arribas and Baker, {William M.} and Rachana Bhatawdekar and Rebecca Bowler and Kristan Boyett and Cameron, {Alex J.} and Stefano Carniani and Stephane Charlot and Jacopo Chevallard and Mirko Curti and Emma Curtis-Lake and Eisenstein, {Daniel J.} and Kevin Hainline and Ryan Hausen and Zhiyuan Ji and Johnson, {Benjamin D.} and Nimisha Kumari and Looser, {Tobias J.} and Roberto Maiolino and Maseda, {Michael V.} and Eleonora Parlanti and Hans-Walter Rix and Robertson, {Brant E.} and Lester Sandles and Jan Scholtz and Renske Smit and Sandro Tacchella and Hannah Ubler and Chris Willott",

note = "{\textcopyright} The Authors 2024. This is Open Access article, published by EDP Sciences, under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.",

year = "2024",

month = mar,

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doi = "10.1051/0004-6361/202347099",

language = "English",

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journal = "Astronomy & Astrophysics",

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Jones, GC, Bunker, AJ, Saxena, A, Witstok, J, Stark, DP, Arribas, S, Baker, WM, Bhatawdekar, R, Bowler, R, Boyett, K, Cameron, AJ, Carniani, S, Charlot, S, Chevallard, J, Curti, M, Curtis-Lake, E, Eisenstein, DJ, Hainline, K, Hausen, R, Ji, Z, Johnson, BD, Kumari, N, Looser, TJ, Maiolino, R, Maseda, MV, Parlanti, E, Rix, H-W, Robertson, BE, Sandles, L, Scholtz, J, Smit, R, Tacchella, S, Ubler, H & Willott, C 2024, 'Jades: JADES: The emergence and evolution of Lyα emission and constraints on the intergalactic medium neutral fraction', Astronomy & Astrophysics, vol. 683, A238. https://doi.org/10.1051/0004-6361/202347099

TY - JOUR

T1 - Jades: JADES: The emergence and evolution of Lyα emission and constraints on the intergalactic medium neutral fraction

AU - Jones, Gareth C.

AU - Bunker, Andrew J.

AU - Saxena, Aayush

AU - Witstok, Joris

AU - Stark, Daniel P.

AU - Arribas, Santiago

AU - Baker, William M.

AU - Bhatawdekar, Rachana

AU - Bowler, Rebecca

AU - Boyett, Kristan

AU - Cameron, Alex J.

AU - Carniani, Stefano

AU - Charlot, Stephane

AU - Chevallard, Jacopo

AU - Curti, Mirko

AU - Curtis-Lake, Emma

AU - Eisenstein, Daniel J.

AU - Hainline, Kevin

AU - Hausen, Ryan

AU - Ji, Zhiyuan

AU - Johnson, Benjamin D.

AU - Kumari, Nimisha

AU - Looser, Tobias J.

AU - Maiolino, Roberto

AU - Maseda, Michael V.

AU - Parlanti, Eleonora

AU - Rix, Hans-Walter

AU - Robertson, Brant E.

AU - Sandles, Lester

AU - Scholtz, Jan

AU - Smit, Renske

AU - Tacchella, Sandro

AU - Ubler, Hannah

AU - Willott, Chris

N1 - © The Authors 2024. This is Open Access article, published by EDP Sciences, under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

PY - 2024/3/22

Y1 - 2024/3/22

N2 - The rest-frame UV recombination emission line Ly$\alpha$ can be powered by ionising photons from young massive stars in star forming galaxies, but its ability to be resonantly scattered by neutral gas complicates its interpretation. For reionization era galaxies, a neutral intergalactic medium (IGM) will scatter Ly$\alpha$ from the line of sight, making Ly$\alpha$ a useful probe of the neutral fraction evolution. Here, we explore Ly$\alpha$ in JWST/NIRSpec spectra from the ongoing JADES programme, which targets hundreds of galaxies in the well-studied GOODS-S and GOODS-N fields. These sources are UV-faint ($-20.45.6$ (as derived with optical lines) are fit with line and continuum models, in order to search for significant line emission. Through exploration of the R100 data, we find evidence for Ly$\alpha$ in 17 sources. This sample allows us to place observational constraints on the fraction of galaxies with Ly$\alpha$ emission in the redshift range $5.6

AB - The rest-frame UV recombination emission line Ly$\alpha$ can be powered by ionising photons from young massive stars in star forming galaxies, but its ability to be resonantly scattered by neutral gas complicates its interpretation. For reionization era galaxies, a neutral intergalactic medium (IGM) will scatter Ly$\alpha$ from the line of sight, making Ly$\alpha$ a useful probe of the neutral fraction evolution. Here, we explore Ly$\alpha$ in JWST/NIRSpec spectra from the ongoing JADES programme, which targets hundreds of galaxies in the well-studied GOODS-S and GOODS-N fields. These sources are UV-faint ($-20.45.6$ (as derived with optical lines) are fit with line and continuum models, in order to search for significant line emission. Through exploration of the R100 data, we find evidence for Ly$\alpha$ in 17 sources. This sample allows us to place observational constraints on the fraction of galaxies with Ly$\alpha$ emission in the redshift range $5.6

KW - astro-ph.GA

U2 - 10.1051/0004-6361/202347099

DO - 10.1051/0004-6361/202347099

M3 - Article

SN - 0004-6361

VL - 683

JO - Astronomy & Astrophysics

JF - Astronomy & Astrophysics

M1 - A238

ER -

Jades: JADES: The emergence and evolution of Lyα emission and constraints on the intergalactic medium neutral fraction

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