Early Results from GLASS-JWST. VI. Extreme Rest-optical Equivalent Widths Detected in NIRISS Wide Field Slitless Spectroscopy

K. Boyett; S. Mascia; L. Pentericci; N. Leethochawalit; M. Trenti; G. Brammer; G. Roberts-Borsani; V. Strait; T. Treu; M. Bradac; K. Glazebrook; A. Acebron; P. Bergamini; A. Calabrò; M. Castellano; A. Fontana; C. Grillo; A. Henry; T. Jones; D. Marchesini; C. Mason; A. Mercurio; T. Morishita; T. Nanayakkara; P. Rosati; C. Scarlata; E. Vanzella; B. Vulcani; X. Wang; C. Willott

doi:10.3847/2041-8213/ac9f17

Early Results from GLASS-JWST. VI. Extreme Rest-optical Equivalent Widths Detected in NIRISS Wide Field Slitless Spectroscopy

K. Boyett, S. Mascia, L. Pentericci, N. Leethochawalit, M. Trenti, G. Brammer, G. Roberts-Borsani, V. Strait, T. Treu, M. Bradac, K. Glazebrook, A. Acebron, P. Bergamini, A. Calabrò, M. Castellano, A. Fontana, C. Grillo, A. Henry, T. Jones, D. MarchesiniC. Mason, A. Mercurio, T. Morishita, T. Nanayakkara, P. Rosati, C. Scarlata, E. Vanzella, B. Vulcani, X. Wang, C. Willott

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Abstract

Wide Field Slitless Spectroscopy (WFSS) provides a powerful tool for detecting strong line emission in star-forming galaxies (SFGs) without the need for target preselection. As part of the GLASS-JWST Early Release Science (ERS) program, we leverage the near-infrared wavelength capabilities of NIRISS (1-2.2 μm) to observe rest-optical emission lines out to z ∼ 3.4, to a depth and with a spatial resolution higher than ever before (Hα to z < 2.4; [O iii]+Hβ to z < 3.4). In this Letter we constrain the rest-frame [O III]λ5007 equivalent width (EW) distribution for a sample of 76 1 < z < 3.4 SFGs in the A2744 Hubble Frontier Field and determine an abundance fraction of extreme emission line galaxies with EW > 750Å in our sample to be 12%. We determine a strong correlation between the measured Hβ and [O III]λ5007 EWs, supporting that the high [O III]λ5007 EW objects require massive stars in young stellar populations to generate the high-energy photons needed to doubly ionize oxygen. We extracted spectra for objects up to 2 mag fainter in the near-infrared than previous WFSS studies with the Hubble Space Telescope. Thus, this work clearly highlights the potential of JWST/NIRISS to provide high-quality WFSS data sets in crowded cluster environments.

Original language	English (US)
Article number	L52
Journal	Astrophysical Journal Letters
Volume	940
Issue number	2
DOIs	https://doi.org/10.3847/2041-8213/ac9f17
State	Published - Dec 1 2022
Externally published	Yes

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© 2022. The Author(s). Published by the American Astronomical Society.

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Boyett, K., Mascia, S., Pentericci, L., Leethochawalit, N., Trenti, M., Brammer, G., Roberts-Borsani, G., Strait, V., Treu, T., Bradac, M., Glazebrook, K., Acebron, A., Bergamini, P., Calabrò, A., Castellano, M., Fontana, A., Grillo, C., Henry, A., Jones, T., ... Willott, C. (2022). Early Results from GLASS-JWST. VI. Extreme Rest-optical Equivalent Widths Detected in NIRISS Wide Field Slitless Spectroscopy. Astrophysical Journal Letters, 940(2), Article L52. https://doi.org/10.3847/2041-8213/ac9f17

Boyett, K, Mascia, S, Pentericci, L, Leethochawalit, N, Trenti, M, Brammer, G, Roberts-Borsani, G, Strait, V, Treu, T, Bradac, M, Glazebrook, K, Acebron, A, Bergamini, P, Calabrò, A, Castellano, M, Fontana, A, Grillo, C, Henry, A, Jones, T, Marchesini, D, Mason, C, Mercurio, A, Morishita, T, Nanayakkara, T, Rosati, P, Scarlata, C, Vanzella, E, Vulcani, B, Wang, X & Willott, C 2022, 'Early Results from GLASS-JWST. VI. Extreme Rest-optical Equivalent Widths Detected in NIRISS Wide Field Slitless Spectroscopy', Astrophysical Journal Letters, vol. 940, no. 2, L52. https://doi.org/10.3847/2041-8213/ac9f17

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title = "Early Results from GLASS-JWST. VI. Extreme Rest-optical Equivalent Widths Detected in NIRISS Wide Field Slitless Spectroscopy",

abstract = "Wide Field Slitless Spectroscopy (WFSS) provides a powerful tool for detecting strong line emission in star-forming galaxies (SFGs) without the need for target preselection. As part of the GLASS-JWST Early Release Science (ERS) program, we leverage the near-infrared wavelength capabilities of NIRISS (1-2.2 μm) to observe rest-optical emission lines out to z ∼ 3.4, to a depth and with a spatial resolution higher than ever before (Hα to z < 2.4; [O iii]+Hβ to z < 3.4). In this Letter we constrain the rest-frame [O III]λ5007 equivalent width (EW) distribution for a sample of 76 1 < z < 3.4 SFGs in the A2744 Hubble Frontier Field and determine an abundance fraction of extreme emission line galaxies with EW > 750{\AA} in our sample to be 12%. We determine a strong correlation between the measured Hβ and [O III]λ5007 EWs, supporting that the high [O III]λ5007 EW objects require massive stars in young stellar populations to generate the high-energy photons needed to doubly ionize oxygen. We extracted spectra for objects up to 2 mag fainter in the near-infrared than previous WFSS studies with the Hubble Space Telescope. Thus, this work clearly highlights the potential of JWST/NIRISS to provide high-quality WFSS data sets in crowded cluster environments.",

author = "K. Boyett and S. Mascia and L. Pentericci and N. Leethochawalit and M. Trenti and G. Brammer and G. Roberts-Borsani and V. Strait and T. Treu and M. Bradac and K. Glazebrook and A. Acebron and P. Bergamini and A. Calabr{\`o} and M. Castellano and A. Fontana and C. Grillo and A. Henry and T. Jones and D. Marchesini and C. Mason and A. Mercurio and T. Morishita and T. Nanayakkara and P. Rosati and C. Scarlata and E. Vanzella and B. Vulcani and X. Wang and C. Willott",

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AU - Boyett, K.

AU - Mascia, S.

AU - Pentericci, L.

AU - Leethochawalit, N.

AU - Trenti, M.

AU - Brammer, G.

AU - Roberts-Borsani, G.

AU - Strait, V.

AU - Treu, T.

AU - Bradac, M.

AU - Glazebrook, K.

AU - Acebron, A.

AU - Bergamini, P.

AU - Calabrò, A.

AU - Castellano, M.

AU - Fontana, A.

AU - Grillo, C.

AU - Henry, A.

AU - Jones, T.

AU - Marchesini, D.

AU - Mason, C.

AU - Mercurio, A.

AU - Morishita, T.

AU - Nanayakkara, T.

AU - Rosati, P.

AU - Scarlata, C.

AU - Vanzella, E.

AU - Vulcani, B.

AU - Wang, X.

AU - Willott, C.

PY - 2022/12/1

Y1 - 2022/12/1

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Early Results from GLASS-JWST. VI. Extreme Rest-optical Equivalent Widths Detected in NIRISS Wide Field Slitless Spectroscopy

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