Early Results from GLASS-JWST. I: Confirmation of Lensed z >= 7 Lyman-break Galaxies behind the Abell 2744 Cluster with NIRISS

Research output: Contribution to journal › Letter › Research › peer-review

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Early Results from GLASS-JWST. I : Confirmation of Lensed z >= 7 Lyman-break Galaxies behind the Abell 2744 Cluster with NIRISS. / Roberts-Borsani, Guido; Morishita, Takahiro; Treu, Tommaso; Brammer, Gabriel; Strait, Victoria; Wang, Xin; Bradac, Marusa; Acebron, Ana; Bergamini, Pietro; Boyett, Kristan; Calabro, Antonello; Castellano, Marco; Fontana, Adriano; Glazebrook, Karl; Grillo, Claudio; Henry, Alaina; Jones, Tucker; Malkan, Matthew; Marchesini, Danilo; Mascia, Sara; Mason, Charlotte; Mercurio, Amata; Merlin, Emiliano; Nanayakkara, Themiya; Pentericci, Laura; Rosati, Piero; Santini, Paola; Scarlata, Claudia; Trenti, Michele; Vanzella, Eros; Vulcani, Benedetta; Willott, Chris.

In: Astrophysical Journal Letters, Vol. 938, No. 2, L13, 18.10.2022.

Research output: Contribution to journal › Letter › Research › peer-review

Harvard

Roberts-Borsani, G, Morishita, T, Treu, T, Brammer, G, Strait, V, Wang, X, Bradac, M, Acebron, A, Bergamini, P, Boyett, K, Calabro, A, Castellano, M, Fontana, A, Glazebrook, K, Grillo, C, Henry, A, Jones, T, Malkan, M, Marchesini, D, Mascia, S, Mason, C, Mercurio, A, Merlin, E, Nanayakkara, T, Pentericci, L, Rosati, P, Santini, P, Scarlata, C, Trenti, M, Vanzella, E, Vulcani, B & Willott, C 2022, 'Early Results from GLASS-JWST. I: Confirmation of Lensed z >= 7 Lyman-break Galaxies behind the Abell 2744 Cluster with NIRISS', Astrophysical Journal Letters, vol. 938, no. 2, L13. https://doi.org/10.3847/2041-8213/ac8e6e

APA

Roberts-Borsani, G., Morishita, T., Treu, T., Brammer, G., Strait, V., Wang, X., Bradac, M., Acebron, A., Bergamini, P., Boyett, K., Calabro, A., Castellano, M., Fontana, A., Glazebrook, K., Grillo, C., Henry, A., Jones, T., Malkan, M., Marchesini, D., ... Willott, C. (2022). Early Results from GLASS-JWST. I: Confirmation of Lensed z >= 7 Lyman-break Galaxies behind the Abell 2744 Cluster with NIRISS. Astrophysical Journal Letters, 938(2), [L13]. https://doi.org/10.3847/2041-8213/ac8e6e

Vancouver

Roberts-Borsani G, Morishita T, Treu T, Brammer G, Strait V, Wang X et al. Early Results from GLASS-JWST. I: Confirmation of Lensed z >= 7 Lyman-break Galaxies behind the Abell 2744 Cluster with NIRISS. Astrophysical Journal Letters. 2022 Oct 18;938(2). L13. https://doi.org/10.3847/2041-8213/ac8e6e

Author

Roberts-Borsani, Guido ; Morishita, Takahiro ; Treu, Tommaso ; Brammer, Gabriel ; Strait, Victoria ; Wang, Xin ; Bradac, Marusa ; Acebron, Ana ; Bergamini, Pietro ; Boyett, Kristan ; Calabro, Antonello ; Castellano, Marco ; Fontana, Adriano ; Glazebrook, Karl ; Grillo, Claudio ; Henry, Alaina ; Jones, Tucker ; Malkan, Matthew ; Marchesini, Danilo ; Mascia, Sara ; Mason, Charlotte ; Mercurio, Amata ; Merlin, Emiliano ; Nanayakkara, Themiya ; Pentericci, Laura ; Rosati, Piero ; Santini, Paola ; Scarlata, Claudia ; Trenti, Michele ; Vanzella, Eros ; Vulcani, Benedetta ; Willott, Chris. / Early Results from GLASS-JWST. I : Confirmation of Lensed z >= 7 Lyman-break Galaxies behind the Abell 2744 Cluster with NIRISS. In: Astrophysical Journal Letters. 2022 ; Vol. 938, No. 2.

Bibtex

@article{124222ec8a664f5bba81bc8aeeff96d7,
title = "Early Results from GLASS-JWST. I: Confirmation of Lensed z >= 7 Lyman-break Galaxies behind the Abell 2744 Cluster with NIRISS",
abstract = "We present the first search for z >= 7, continuum-confirmed Lyman break sources with NIRISS/WFS spectroscopy over the Abell 2744 Frontier Fields cluster, as part of the GLASS-JWST-ERS survey. With similar to 15 hr of preimaging and multiangle grism exposures in the F115W, F150W, and F200W filters, we describe the general data handling (i.e., reduction, cleaning, modeling, and extraction processes) and analysis for the GLASS-JWST survey. We showcase the power of JWST to peer deep into reionization, when most intergalactic hydrogen is neutral, by confirming two galaxies at z = 8.04 +/- 0.15 and z = 7.90 +/- 0.13 by means of their Lyman breaks. Fainter continuum spectra are observed in both the F150W and F200W bands, indicative of blue (-1.69 and -1.33) UV slopes and moderately bright absolute magnitudes (-20.37 and -19.68 mag). We do not detect strong Ly alpha in either galaxy, but do observe tentative (similar to 2.7-3.8 sigma) He ii lambda 1640 angstrom, O iii]lambda lambda 1661,1666 angstrom, and N iii]lambda lambda 1747,1749 angstrom line emission in one, suggestive of low-metallicity, star-forming systems with possible nonthermal contributions. These novel observations provide a first look at the extraordinary potential of JWST/NIRISS for confirming representative samples of bright z >= 7 sources in the absence of strong emission lines, and gain unprecedented insight into their contributions toward cosmic reionization.",
keywords = "LY-ALPHA, ACCELERATED REIONIZATION, LUMINOSITY FUNCTION, AMPLIFIED SURVEY, SURVEY DESIGN, EMISSION, ULTRAVIOLET, EVOLUTION, STARS, DUSTY",
author = "Guido Roberts-Borsani and Takahiro Morishita and Tommaso Treu and Gabriel Brammer and Victoria Strait and Xin Wang and Marusa Bradac and Ana Acebron and Pietro Bergamini and Kristan Boyett and Antonello Calabro and Marco Castellano and Adriano Fontana and Karl Glazebrook and Claudio Grillo and Alaina Henry and Tucker Jones and Matthew Malkan and Danilo Marchesini and Sara Mascia and Charlotte Mason and Amata Mercurio and Emiliano Merlin and Themiya Nanayakkara and Laura Pentericci and Piero Rosati and Paola Santini and Claudia Scarlata and Michele Trenti and Eros Vanzella and Benedetta Vulcani and Chris Willott",
year = "2022",
month = oct,
day = "18",
doi = "10.3847/2041-8213/ac8e6e",
language = "English",
volume = "938",
journal = "The Astrophysical Journal Letters",
issn = "2041-8205",
publisher = "IOP Publishing",
number = "2",

}

RIS

TY - JOUR

T1 - Early Results from GLASS-JWST. I

T2 - Confirmation of Lensed z >= 7 Lyman-break Galaxies behind the Abell 2744 Cluster with NIRISS

AU - Roberts-Borsani, Guido

AU - Morishita, Takahiro

AU - Treu, Tommaso

AU - Brammer, Gabriel

AU - Strait, Victoria

AU - Wang, Xin

AU - Bradac, Marusa

AU - Acebron, Ana

AU - Bergamini, Pietro

AU - Boyett, Kristan

AU - Calabro, Antonello

AU - Castellano, Marco

AU - Fontana, Adriano

AU - Glazebrook, Karl

AU - Grillo, Claudio

AU - Henry, Alaina

AU - Jones, Tucker

AU - Malkan, Matthew

AU - Marchesini, Danilo

AU - Mascia, Sara

AU - Mason, Charlotte

AU - Mercurio, Amata

AU - Merlin, Emiliano

AU - Nanayakkara, Themiya

AU - Pentericci, Laura

AU - Rosati, Piero

AU - Santini, Paola

AU - Scarlata, Claudia

AU - Trenti, Michele

AU - Vanzella, Eros

AU - Vulcani, Benedetta

AU - Willott, Chris

PY - 2022/10/18

Y1 - 2022/10/18

N2 - We present the first search for z >= 7, continuum-confirmed Lyman break sources with NIRISS/WFS spectroscopy over the Abell 2744 Frontier Fields cluster, as part of the GLASS-JWST-ERS survey. With similar to 15 hr of preimaging and multiangle grism exposures in the F115W, F150W, and F200W filters, we describe the general data handling (i.e., reduction, cleaning, modeling, and extraction processes) and analysis for the GLASS-JWST survey. We showcase the power of JWST to peer deep into reionization, when most intergalactic hydrogen is neutral, by confirming two galaxies at z = 8.04 +/- 0.15 and z = 7.90 +/- 0.13 by means of their Lyman breaks. Fainter continuum spectra are observed in both the F150W and F200W bands, indicative of blue (-1.69 and -1.33) UV slopes and moderately bright absolute magnitudes (-20.37 and -19.68 mag). We do not detect strong Ly alpha in either galaxy, but do observe tentative (similar to 2.7-3.8 sigma) He ii lambda 1640 angstrom, O iii]lambda lambda 1661,1666 angstrom, and N iii]lambda lambda 1747,1749 angstrom line emission in one, suggestive of low-metallicity, star-forming systems with possible nonthermal contributions. These novel observations provide a first look at the extraordinary potential of JWST/NIRISS for confirming representative samples of bright z >= 7 sources in the absence of strong emission lines, and gain unprecedented insight into their contributions toward cosmic reionization.

AB - We present the first search for z >= 7, continuum-confirmed Lyman break sources with NIRISS/WFS spectroscopy over the Abell 2744 Frontier Fields cluster, as part of the GLASS-JWST-ERS survey. With similar to 15 hr of preimaging and multiangle grism exposures in the F115W, F150W, and F200W filters, we describe the general data handling (i.e., reduction, cleaning, modeling, and extraction processes) and analysis for the GLASS-JWST survey. We showcase the power of JWST to peer deep into reionization, when most intergalactic hydrogen is neutral, by confirming two galaxies at z = 8.04 +/- 0.15 and z = 7.90 +/- 0.13 by means of their Lyman breaks. Fainter continuum spectra are observed in both the F150W and F200W bands, indicative of blue (-1.69 and -1.33) UV slopes and moderately bright absolute magnitudes (-20.37 and -19.68 mag). We do not detect strong Ly alpha in either galaxy, but do observe tentative (similar to 2.7-3.8 sigma) He ii lambda 1640 angstrom, O iii]lambda lambda 1661,1666 angstrom, and N iii]lambda lambda 1747,1749 angstrom line emission in one, suggestive of low-metallicity, star-forming systems with possible nonthermal contributions. These novel observations provide a first look at the extraordinary potential of JWST/NIRISS for confirming representative samples of bright z >= 7 sources in the absence of strong emission lines, and gain unprecedented insight into their contributions toward cosmic reionization.

KW - LY-ALPHA

KW - ACCELERATED REIONIZATION

KW - LUMINOSITY FUNCTION

KW - AMPLIFIED SURVEY

KW - SURVEY DESIGN

KW - EMISSION

KW - ULTRAVIOLET

KW - EVOLUTION

KW - STARS

KW - DUSTY

U2 - 10.3847/2041-8213/ac8e6e

DO - 10.3847/2041-8213/ac8e6e

M3 - Letter

VL - 938

JO - The Astrophysical Journal Letters

JF - The Astrophysical Journal Letters

SN - 2041-8205

IS - 2

M1 - L13

ER -

ID: 323978672