The Physical Conditions of Emission-line Galaxies at Cosmic Dawn from JWST/NIRSpec Spectroscopy in the SMACS 0723 Early Release Observations

Research output: Contribution to journal › Journal article › Research › peer-review

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The Physical Conditions of Emission-line Galaxies at Cosmic Dawn from JWST/NIRSpec Spectroscopy in the SMACS 0723 Early Release Observations. / Trump, Jonathan R.; Haro, Pablo Arrabal; Simons, Raymond C.; Backhaus, Bren E.; Amorin, Ricardo O.; Dickinson, Mark; Fernandez, Vital; Papovich, Casey; Nicholls, David C.; Kewley, Lisa J.; Brunker, Samantha W.; Salzer, John J.; Wilkins, Stephen M.; Almaini, Omar; Bagley, Micaela B.; Berg, Danielle A.; Bhatawdekar, Rachana; Bisigello, Laura; Buat, Veronique; Burgarella, Denis; Calabro, Antonello; Casey, Caitlin M.; Ciesla, Laure; Cleri, Nikko J.; Cole, Justin W.; Cooper, M. C.; Cooray, Asantha R.; Costantin, Luca; Croton, Darren; Ferguson, Henry C.; Finkelstein, Steven L.; Fujimoto, Seiji; Gardner, Jonathan P.; Gawiser, Eric; Giavalisco, Mauro; Grazian, Andrea; Grogin, Norman A.; Hathi, Nimish P.; Hirschmann, Michaela; Holwerda, Benne W.; Huertas-Company, Marc; Hutchison, Taylor A.; Jogee, Shardha; Juneau, Stephanie; Jung, Intae; Kartaltepe, Jeyhan S.; Kirkpatrick, Allison; Kocevski, Dale D.; Koekemoer, Anton M.; Lotz, Jennifer M.; Lucas, Ray A.; Magnelli, Benjamin; Matharu, Jasleen; Perez-Gonzalez, Pablo G.; Pirzkal, Nor; Rafelski, Marc; Rose, Caitlin; Seille, Lise-Marie; Somerville, Rachel S.; Straughn, Amber N.; Tacchella, Sandro; Vanderhoof, Brittany N.; Weiner, Benjamin J.; Wuyts, Stijn; Aaron Yung, L. Y.; Zavala, Jorge A.

In: Astrophysical Journal, Vol. 945, No. 1, 35, 01.03.2023.

Research output: Contribution to journal › Journal article › Research › peer-review

Harvard

Trump, JR, Haro, PA, Simons, RC, Backhaus, BE, Amorin, RO, Dickinson, M, Fernandez, V, Papovich, C, Nicholls, DC, Kewley, LJ, Brunker, SW, Salzer, JJ, Wilkins, SM, Almaini, O, Bagley, MB, Berg, DA, Bhatawdekar, R, Bisigello, L, Buat, V, Burgarella, D, Calabro, A, Casey, CM, Ciesla, L, Cleri, NJ, Cole, JW, Cooper, MC, Cooray, AR, Costantin, L, Croton, D, Ferguson, HC, Finkelstein, SL, Fujimoto, S, Gardner, JP, Gawiser, E, Giavalisco, M, Grazian, A, Grogin, NA, Hathi, NP, Hirschmann, M, Holwerda, BW, Huertas-Company, M, Hutchison, TA, Jogee, S, Juneau, S, Jung, I, Kartaltepe, JS, Kirkpatrick, A, Kocevski, DD, Koekemoer, AM, Lotz, JM, Lucas, RA, Magnelli, B, Matharu, J, Perez-Gonzalez, PG, Pirzkal, N, Rafelski, M, Rose, C, Seille, L-M, Somerville, RS, Straughn, AN, Tacchella, S, Vanderhoof, BN, Weiner, BJ, Wuyts, S, Aaron Yung, LY & Zavala, JA 2023, 'The Physical Conditions of Emission-line Galaxies at Cosmic Dawn from JWST/NIRSpec Spectroscopy in the SMACS 0723 Early Release Observations', Astrophysical Journal, vol. 945, no. 1, 35. https://doi.org/10.3847/1538-4357/acba8a

APA

Trump, J. R., Haro, P. A., Simons, R. C., Backhaus, B. E., Amorin, R. O., Dickinson, M., Fernandez, V., Papovich, C., Nicholls, D. C., Kewley, L. J., Brunker, S. W., Salzer, J. J., Wilkins, S. M., Almaini, O., Bagley, M. B., Berg, D. A., Bhatawdekar, R., Bisigello, L., Buat, V., ... Zavala, J. A. (2023). The Physical Conditions of Emission-line Galaxies at Cosmic Dawn from JWST/NIRSpec Spectroscopy in the SMACS 0723 Early Release Observations. Astrophysical Journal, 945(1), [35]. https://doi.org/10.3847/1538-4357/acba8a

Vancouver

Trump JR, Haro PA, Simons RC, Backhaus BE, Amorin RO, Dickinson M et al. The Physical Conditions of Emission-line Galaxies at Cosmic Dawn from JWST/NIRSpec Spectroscopy in the SMACS 0723 Early Release Observations. Astrophysical Journal. 2023 Mar 1;945(1). 35. https://doi.org/10.3847/1538-4357/acba8a

Author

Trump, Jonathan R. ; Haro, Pablo Arrabal ; Simons, Raymond C. ; Backhaus, Bren E. ; Amorin, Ricardo O. ; Dickinson, Mark ; Fernandez, Vital ; Papovich, Casey ; Nicholls, David C. ; Kewley, Lisa J. ; Brunker, Samantha W. ; Salzer, John J. ; Wilkins, Stephen M. ; Almaini, Omar ; Bagley, Micaela B. ; Berg, Danielle A. ; Bhatawdekar, Rachana ; Bisigello, Laura ; Buat, Veronique ; Burgarella, Denis ; Calabro, Antonello ; Casey, Caitlin M. ; Ciesla, Laure ; Cleri, Nikko J. ; Cole, Justin W. ; Cooper, M. C. ; Cooray, Asantha R. ; Costantin, Luca ; Croton, Darren ; Ferguson, Henry C. ; Finkelstein, Steven L. ; Fujimoto, Seiji ; Gardner, Jonathan P. ; Gawiser, Eric ; Giavalisco, Mauro ; Grazian, Andrea ; Grogin, Norman A. ; Hathi, Nimish P. ; Hirschmann, Michaela ; Holwerda, Benne W. ; Huertas-Company, Marc ; Hutchison, Taylor A. ; Jogee, Shardha ; Juneau, Stephanie ; Jung, Intae ; Kartaltepe, Jeyhan S. ; Kirkpatrick, Allison ; Kocevski, Dale D. ; Koekemoer, Anton M. ; Lotz, Jennifer M. ; Lucas, Ray A. ; Magnelli, Benjamin ; Matharu, Jasleen ; Perez-Gonzalez, Pablo G. ; Pirzkal, Nor ; Rafelski, Marc ; Rose, Caitlin ; Seille, Lise-Marie ; Somerville, Rachel S. ; Straughn, Amber N. ; Tacchella, Sandro ; Vanderhoof, Brittany N. ; Weiner, Benjamin J. ; Wuyts, Stijn ; Aaron Yung, L. Y. ; Zavala, Jorge A. / The Physical Conditions of Emission-line Galaxies at Cosmic Dawn from JWST/NIRSpec Spectroscopy in the SMACS 0723 Early Release Observations. In: Astrophysical Journal. 2023 ; Vol. 945, No. 1.

Bibtex

@article{7fb696223ace4e239f92d6ac5a3aa0aa,
title = "The Physical Conditions of Emission-line Galaxies at Cosmic Dawn from JWST/NIRSpec Spectroscopy in the SMACS 0723 Early Release Observations",
abstract = "We present rest-frame optical emission-line flux ratio measurements for five z > 5 galaxies observed by the James Webb Space Telescope Near-Infared Spectrograph (NIRSpec) in the SMACS 0723 Early Release Observations. We add several quality-control and post-processing steps to the NIRSpec pipeline reduction products in order to ensure reliable relative flux calibration of emission lines that are closely separated in wavelength, despite the uncertain absolute spectrophotometry of the current version of the reductions. Compared to z similar to 3 galaxies in the literature, the z > 5 galaxies have similar [O iii]lambda 5008/H beta ratios, similar [O iii]lambda 4364/H gamma ratios, and higher (similar to 0.5 dex) [Ne III]lambda 3870/[O II]lambda 3728 ratios. We compare the observations to MAPPINGS V photoionization models and find that the measured [Ne III]lambda 3870/[O II]lambda 3728, [O iii]lambda 4364/H gamma, and [O iii]lambda 5008/H beta emission-line ratios are consistent with an interstellar medium (ISM) that has very high ionization ( log(Q)?8-9 , units of cm s(-1)), low metallicity (Z/Z (?) ? 0.2), and very high pressure ( log(P/k)?8-9, units of cm(-3)). The combination of [O iii]lambda 4364/H gamma and [O iii]lambda(4960 + 5008)/H beta line ratios indicate very high electron temperatures of 4.1 < log(T-e/K) < 4.4, further implying metallicities of Z/Z(?)?0.2 with the application of low-redshift calibrations for {"}T-e -based {"} metallicities. These observations represent a tantalizing new view of the physical conditions of the ISM in galaxies at cosmic dawn.",
keywords = "STAR-FORMING GALAXIES, MASS-METALLICITY RELATION, SIMILAR-TO 2, NEAR-INFRARED SPECTROSCOPY, MOSDEF SURVEY, CHEMICAL-COMPOSITION, COLLISION STRENGTHS, NEBULAR EMISSION, ATOMIC DATABASE, LY-ALPHA",
author = "Trump, {Jonathan R.} and Haro, {Pablo Arrabal} and Simons, {Raymond C.} and Backhaus, {Bren E.} and Amorin, {Ricardo O.} and Mark Dickinson and Vital Fernandez and Casey Papovich and Nicholls, {David C.} and Kewley, {Lisa J.} and Brunker, {Samantha W.} and Salzer, {John J.} and Wilkins, {Stephen M.} and Omar Almaini and Bagley, {Micaela B.} and Berg, {Danielle A.} and Rachana Bhatawdekar and Laura Bisigello and Veronique Buat and Denis Burgarella and Antonello Calabro and Casey, {Caitlin M.} and Laure Ciesla and Cleri, {Nikko J.} and Cole, {Justin W.} and Cooper, {M. C.} and Cooray, {Asantha R.} and Luca Costantin and Darren Croton and Ferguson, {Henry C.} and Finkelstein, {Steven L.} and Seiji Fujimoto and Gardner, {Jonathan P.} and Eric Gawiser and Mauro Giavalisco and Andrea Grazian and Grogin, {Norman A.} and Hathi, {Nimish P.} and Michaela Hirschmann and Holwerda, {Benne W.} and Marc Huertas-Company and Hutchison, {Taylor A.} and Shardha Jogee and Stephanie Juneau and Intae Jung and Kartaltepe, {Jeyhan S.} and Allison Kirkpatrick and Kocevski, {Dale D.} and Koekemoer, {Anton M.} and Lotz, {Jennifer M.} and Lucas, {Ray A.} and Benjamin Magnelli and Jasleen Matharu and Perez-Gonzalez, {Pablo G.} and Nor Pirzkal and Marc Rafelski and Caitlin Rose and Lise-Marie Seille and Somerville, {Rachel S.} and Straughn, {Amber N.} and Sandro Tacchella and Vanderhoof, {Brittany N.} and Weiner, {Benjamin J.} and Stijn Wuyts and {Aaron Yung}, {L. Y.} and Zavala, {Jorge A.}",
year = "2023",
month = mar,
day = "1",
doi = "10.3847/1538-4357/acba8a",
language = "English",
volume = "945",
journal = "Astrophysical Journal",
issn = "0067-0049",
publisher = "Institute of Physics Publishing, Inc",
number = "1",

}

RIS

TY - JOUR

T1 - The Physical Conditions of Emission-line Galaxies at Cosmic Dawn from JWST/NIRSpec Spectroscopy in the SMACS 0723 Early Release Observations

AU - Trump, Jonathan R.

AU - Haro, Pablo Arrabal

AU - Simons, Raymond C.

AU - Backhaus, Bren E.

AU - Amorin, Ricardo O.

AU - Dickinson, Mark

AU - Fernandez, Vital

AU - Papovich, Casey

AU - Nicholls, David C.

AU - Kewley, Lisa J.

AU - Brunker, Samantha W.

AU - Salzer, John J.

AU - Wilkins, Stephen M.

AU - Almaini, Omar

AU - Bagley, Micaela B.

AU - Berg, Danielle A.

AU - Bhatawdekar, Rachana

AU - Bisigello, Laura

AU - Buat, Veronique

AU - Burgarella, Denis

AU - Calabro, Antonello

AU - Casey, Caitlin M.

AU - Ciesla, Laure

AU - Cleri, Nikko J.

AU - Cole, Justin W.

AU - Cooper, M. C.

AU - Cooray, Asantha R.

AU - Costantin, Luca

AU - Croton, Darren

AU - Ferguson, Henry C.

AU - Finkelstein, Steven L.

AU - Fujimoto, Seiji

AU - Gardner, Jonathan P.

AU - Gawiser, Eric

AU - Giavalisco, Mauro

AU - Grazian, Andrea

AU - Grogin, Norman A.

AU - Hathi, Nimish P.

AU - Hirschmann, Michaela

AU - Holwerda, Benne W.

AU - Huertas-Company, Marc

AU - Hutchison, Taylor A.

AU - Jogee, Shardha

AU - Juneau, Stephanie

AU - Jung, Intae

AU - Kartaltepe, Jeyhan S.

AU - Kirkpatrick, Allison

AU - Kocevski, Dale D.

AU - Koekemoer, Anton M.

AU - Lotz, Jennifer M.

AU - Lucas, Ray A.

AU - Magnelli, Benjamin

AU - Matharu, Jasleen

AU - Perez-Gonzalez, Pablo G.

AU - Pirzkal, Nor

AU - Rafelski, Marc

AU - Rose, Caitlin

AU - Seille, Lise-Marie

AU - Somerville, Rachel S.

AU - Straughn, Amber N.

AU - Tacchella, Sandro

AU - Vanderhoof, Brittany N.

AU - Weiner, Benjamin J.

AU - Wuyts, Stijn

AU - Aaron Yung, L. Y.

AU - Zavala, Jorge A.

PY - 2023/3/1

Y1 - 2023/3/1

N2 - We present rest-frame optical emission-line flux ratio measurements for five z > 5 galaxies observed by the James Webb Space Telescope Near-Infared Spectrograph (NIRSpec) in the SMACS 0723 Early Release Observations. We add several quality-control and post-processing steps to the NIRSpec pipeline reduction products in order to ensure reliable relative flux calibration of emission lines that are closely separated in wavelength, despite the uncertain absolute spectrophotometry of the current version of the reductions. Compared to z similar to 3 galaxies in the literature, the z > 5 galaxies have similar [O iii]lambda 5008/H beta ratios, similar [O iii]lambda 4364/H gamma ratios, and higher (similar to 0.5 dex) [Ne III]lambda 3870/[O II]lambda 3728 ratios. We compare the observations to MAPPINGS V photoionization models and find that the measured [Ne III]lambda 3870/[O II]lambda 3728, [O iii]lambda 4364/H gamma, and [O iii]lambda 5008/H beta emission-line ratios are consistent with an interstellar medium (ISM) that has very high ionization ( log(Q)?8-9 , units of cm s(-1)), low metallicity (Z/Z (?) ? 0.2), and very high pressure ( log(P/k)?8-9, units of cm(-3)). The combination of [O iii]lambda 4364/H gamma and [O iii]lambda(4960 + 5008)/H beta line ratios indicate very high electron temperatures of 4.1 < log(T-e/K) < 4.4, further implying metallicities of Z/Z(?)?0.2 with the application of low-redshift calibrations for "T-e -based " metallicities. These observations represent a tantalizing new view of the physical conditions of the ISM in galaxies at cosmic dawn.

AB - We present rest-frame optical emission-line flux ratio measurements for five z > 5 galaxies observed by the James Webb Space Telescope Near-Infared Spectrograph (NIRSpec) in the SMACS 0723 Early Release Observations. We add several quality-control and post-processing steps to the NIRSpec pipeline reduction products in order to ensure reliable relative flux calibration of emission lines that are closely separated in wavelength, despite the uncertain absolute spectrophotometry of the current version of the reductions. Compared to z similar to 3 galaxies in the literature, the z > 5 galaxies have similar [O iii]lambda 5008/H beta ratios, similar [O iii]lambda 4364/H gamma ratios, and higher (similar to 0.5 dex) [Ne III]lambda 3870/[O II]lambda 3728 ratios. We compare the observations to MAPPINGS V photoionization models and find that the measured [Ne III]lambda 3870/[O II]lambda 3728, [O iii]lambda 4364/H gamma, and [O iii]lambda 5008/H beta emission-line ratios are consistent with an interstellar medium (ISM) that has very high ionization ( log(Q)?8-9 , units of cm s(-1)), low metallicity (Z/Z (?) ? 0.2), and very high pressure ( log(P/k)?8-9, units of cm(-3)). The combination of [O iii]lambda 4364/H gamma and [O iii]lambda(4960 + 5008)/H beta line ratios indicate very high electron temperatures of 4.1 < log(T-e/K) < 4.4, further implying metallicities of Z/Z(?)?0.2 with the application of low-redshift calibrations for "T-e -based " metallicities. These observations represent a tantalizing new view of the physical conditions of the ISM in galaxies at cosmic dawn.

KW - STAR-FORMING GALAXIES

KW - MASS-METALLICITY RELATION

KW - SIMILAR-TO 2

KW - NEAR-INFRARED SPECTROSCOPY

KW - MOSDEF SURVEY

KW - CHEMICAL-COMPOSITION

KW - COLLISION STRENGTHS

KW - NEBULAR EMISSION

KW - ATOMIC DATABASE

KW - LY-ALPHA

U2 - 10.3847/1538-4357/acba8a

DO - 10.3847/1538-4357/acba8a

M3 - Journal article

VL - 945

JO - Astrophysical Journal

JF - Astrophysical Journal

SN - 0067-0049

IS - 1

M1 - 35

ER -

ID: 344292260