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94 Publications

2026 | Published | Journal Article | IST-REx-ID: 22263 |

A black hole star at cosmic noon: Extreme Balmer break, photospheric continuum, and broad absorption by thick winds in a Little Red Dot at z = 1.7
A. Torralba Torregrosa, J.J. Matthee, A. Weibel, R.P. Naidu, Y. Ma, A.P. Cloonan, A.A. Desai, A. De Graaff, J.E. Greene, C.K. Jespersen, I. Kramarenko, S. Mascia, P.A. Oesch, W.Q. Sun, C.C. Williams, The Astrophysical Journal Letters 1005 (2026).

[Published Version] View | Files available | DOI | arXiv

The mass–metallicity relation and its observational effects at z ∼ 3–6
Lewis Z, Maseda MV, De Graaff A, Leja J, Wang B, Rix HW, Mcconachie I, Cleri NJ, Bezanson R, Boogaard LA, Brammer G, Greene JE, Hirschmann M, Katz H, Labbé I, Matthee JJ, Miller TB, Naidu RP, Oesch PA, Setton DJ, Suess KA, Weibel A, Whitaker KE, Williams CC. 2026. The mass–metallicity relation and its observational effects at z ∼ 3–6. The Astrophysical Journal. 1005(2), 159.

[Published Version] View | Files available | DOI | arXiv

2026 | Published | Journal Article | IST-REx-ID: 22296 |

The Deepest GLIMPSE of a dense gas cocoon enshrouding a Little Red Dot
Kokorev V, Chisholm J, Naidu RP, Fujimoto S, Atek H, Brammer G, Finkelstein SL, Akins HB, Berg DA, Furtak LJ, Fei Q, Hsiao TY-Y, Labbé I, Matthee JJ, Muñoz JB, Oesch PA, Pan R, Rinaldi P, Saldana-Lopez A, Schaerer D, Volonteri M, Zitrin A. 2026. The Deepest GLIMPSE of a dense gas cocoon enshrouding a Little Red Dot. The Astrophysical Journal. 1004(2), 153.

[Published Version] View | Files available | DOI | arXiv

Catching the nebular needle in a polluted haystack: Line-emission signatures from population III-forming pockets around massive galaxies at the end of reionization
A. Venditti, L. Graziani, R. Schneider, V. Bromm, J.B. Muñoz, C. Di Cesare, R. Valiante, A. Calabrò, R. Maiolino, S.L. Finkelstein, M. Parente, M. Saggini, J. Chisholm, The Astrophysical Journal 1005 (2026).

[Published Version] View | Files available | DOI | arXiv

All the massive galaxy overdensities during reionisation: JWST rest-frame optical selection reveals young, chemically evolved galaxies embedded in dense, neutral gas at z > 5
C. Terp, K.E. Heintz, J.J. Matthee, R.P. Naidu, P.A. Oesch, C. Witten, D. Kashino, C.L. Pollock, C. Di Cesare, A. Torralba Torregrosa, Astronomy & Astrophysics 710 (2026).

[Published Version] View | Files available | DOI

2026 | Published | Journal Article | IST-REx-ID: 20975

A dense web of neutral gas in a galaxy proto-cluster post-reionization
Heintz KE, Bennett JS, Oesch PA, Sneppen A, Rennehan D, Pollock CL, Witstok J, Smit R, Vejlgaard S, Terp C, Koca US, Brammer GB, Finlator K, Hayes MJ, Sijacki D, Naidu RP, Matthee JJ, Valentino F, Tanvir NR, Jakobsson P, Laursen P, Watson DJ, Davé R, Keating LC, Covelo-Paz A. 2026. A dense web of neutral gas in a galaxy proto-cluster post-reionization. Nature Astronomy. 10, 448–456.

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Euclid Quick Data Release (Q1): XII. Quenching precedes bulge formation in dense environments but follows it in the field
Gentile F et al. 2026. Euclid Quick Data Release (Q1): XII. Quenching precedes bulge formation in dense environments but follows it in the field. Astronomy & Astrophysics. 711, A12.

[Published Version] View | Files available | DOI | arXiv

PRISMS: U37126, a very blue ISM-naked starburst at z = 10.255 with a nearly 100% Lyman continuum escape fraction
Marques-Chaves R, Álvarez-Márquez J, Colina L, Kendrew S, Abdurro’Uf U, Blanco-Prieto C, Boogaard LA, Castellano M, Caputi KI, Crespo-Gómez A, Fontana A, Fudamoto Y, Fujimoto S, García-Marín M, Harikane Y, Harish S, Hashimoto T, Hsiao T, Iani E, Inoue AK, Langeroodi D, Lin R, Melinder J, Napolitano L, Östlin G, Pérez-González PG, Prieto-Jiménez C, Rinaldi P, Rodríguez Del Pino B, Santini P, Sugahara Y, Varo-O’Ferrall A, Wright G, Zavala J. 2026. PRISMS: U37126, a very blue ISM-naked starburst at z = 10.255 with a nearly 100% Lyman continuum escape fraction. Astronomy & Astrophysics. 711, A301.

[Published Version] View | Files available | DOI | arXiv

A gas-enshrouded and gas-reddened black hole at cosmic dawn
Naidu RP, Matthee JJ, Katz H, De Graaff A, Oesch PA, Smith A, Greene JE, Brammer G, Weibel A, Hviding R, Chisholm J, Labbé I, Simcoe RA, Witten C, Sun WQ, Atek H, Baggen JFW, Belli S, Bezanson R, Boogaard LA, Bose S, Bouwens RJ, Covelo-Paz A, Dayal P, Fudamoto Y, Furtak LJ, Giovinazzo E, Goulding A, Gronke M, Heintz KE, Hirschmann M, Illingworth G, Inoue AK, Johnson BD, Leja J, Leonova E, Mcconachie I, Maseda MV, Natarajan P, Nelson E, Setton DJ, Shivaei I, Sobral D, Stefanon M, Tacchella S, Toft S, Torralba Torregrosa A, Van Dokkum P, Van Der Wel A, Volonteri M, Walter F, Wang B, Watson D, Whitaker K. 2026. A gas-enshrouded and gas-reddened black hole at cosmic dawn. Nature. 656(8127), 329–333.

[Published Version] View | Files available | DOI | PubMed | Europe PMC

Novel z ∼ 10 auroral line measurements extend the gradual offset of the fundamental metallicity relation deep into the first gigayear of cosmic time
C.L. Pollock, R. Gottumukkala, K.E. Heintz, G.B. Brammer, G. Roberts-Borsani, P.A. Oesch, J. Witstok, K.Z. Arellano-Córdova, F. Cullen, D. Scholte, C. Terp, L. Rowland, A. Sneppen, K. Ito, F. Valentino, J.J. Matthee, D. Watson, S. Toft, Astronomy & Astrophysics 708 (2026).

[Published Version] View | Files available | DOI | arXiv

2026 | Published | Journal Article | IST-REx-ID: 22814 |

Pseudo Little Red Dot: An active black hole embedded in a dense and dusty, metal-poor starburst galaxy at z = 5.96
K.I. Caputi, R.A. Cooper, P. Rinaldi, R. Navarro-Carrera, E. Iani, A.A. Tumborang, The Astrophysical Journal 1007 (2026).

[Published Version] View | Files available | DOI | arXiv

Nitrogen abundances in star-forming galaxies 2.2 Gyr after the Big Bang are not elevated
Schaerer D, Izotov YI, Marques-Chaves R, Steidel CC, Reddy N, Shapley AE, Mascia S, Chisholm J, Flury SR, Guseva N, Heckman T, Henry A, Inoue AK, Jung I, Kusakabe H, Mawatari K, Oesch P, Östlin G, Pentericci L, Roy N, Saldana-Lopez A, Sato R, Vanzella E, Verhamme A, Wang B. 2026. Nitrogen abundances in star-forming galaxies 2.2 Gyr after the Big Bang are not elevated. Astronomy & Astrophysics. 708, A242.

[Published Version] View | Files available | DOI | arXiv

2025 | Published | Journal Article | IST-REx-ID: 20864 |

JWST provides a new view of cosmic dawn: Latest developments in studies of early galaxies
J.J. Matthee, Contemporary Physics 66 (2025) 116–151.

[Preprint] View | DOI | Download Preprint (ext.) | arXiv

A Lyman continuum analysis of ∼100 galaxies at z spec∼ 3 in the Abell 2744 cluster field
Y. Liu, S. Mascia, L. Pentericci, P. Watson, A. Alavi, P. Bergamini, M. Bradač, A. Calabrò, K. Glazebrook, A. Henry, M. Llerena, E. Merlin, B. Metha, T. Nanayakkara, L. Napolitano, N. Roy, B. Siana, E. Vanzella, B. Vulcani, X. Wang, Astronomy & Astrophysics 704 (2025).

[Published Version] View | Files available | DOI | arXiv

Little Red Dots at an inflection point: Ubiquitous v-shaped turnover consistently occurs at the Balmer limit
Setton DJ, Greene JE, de Graaff A, Ma Y逸伦, Leja J, Matthee JJ, Bezanson R, Boogaard LA, Cleri NJ, Katz H, Labbe I, Maseda MV, McConachie I, Miller TB, Price SH, Suess KA, van Dokkum P, Wang 王 B冰洁, Weibel A, Whitaker KE, Williams CC. 2025. Little Red Dots at an inflection point: Ubiquitous v-shaped turnover consistently occurs at the Balmer limit. The Astrophysical Journal. 995(1), 118.

[Published Version] View | Files available | DOI | arXiv

A confirmed deficit of hot and cold dust emission in the most luminous Little Red Dots
Setton DJ, Greene JE, Spilker JS, Williams CC, Labbé I, Ma Y逸伦, Wang B冰洁, Whitaker KE, Leja J, de Graaff A, Alberts S, Bezanson R, Boogaard LA, Brammer G, Cutler SE, Cleri NJ, Cooper OR, Dayal P, Fujimoto S, Furtak LJ, Goulding AD, Hirschmann M, Kokorev V, Maseda MV, McConachie I, Matthee JJ, Miller TB, Naidu RP, Oesch PA, Pan R, Price SH, Suess KA, Weaver JR, Xiao M, Zhang Y, Zitrin A. 2025. A confirmed deficit of hot and cold dust emission in the most luminous Little Red Dots. The Astrophysical Journal Letters. 991, L10.

[Published Version] View | Files available | DOI | arXiv

Little impact of mergers and galaxy morphology on the production and escape of ionizing photons in the early Universe
Mascia S, Pentericci L, Llerena M, Calabrò A, Matthee JJ, Flury S, Pacucci F, Jaskot A, Amorín RO, Bhatawdekar R, Castellano M, Cleri N, Costantin L, Davis K, Di Cesare C, Dickinson M, Fontana A, Guo Y, Giavalisco M, Holwerda BW, Hu W, Huertas-Company M, Jung I, Kartaltepe J, Kashino D, Koekemoer AM, Lucas RA, Lotz J, Napolitano L, Jogee S, Wilkins S. 2025. Little impact of mergers and galaxy morphology on the production and escape of ionizing photons in the early Universe. Astronomy & Astrophysics. 701, A122.

[Published Version] View | Files available | DOI | arXiv

GLIMPSE: An ultrafaint ≃10^5 M⊙ Pop III galaxy candidate and first constraints on the Pop III UV luminosity function at z ≃ 6–7
Fujimoto S, Naidu RP, Chisholm J, Atek H, Endsley R, Kokorev V, Furtak LJ, Pan R, Liu B, Bromm V, Venditti A, Visbal E, Sarmento R, Weibel A, Oesch PA, Brammer G, Schaerer D, Adamo A, Berg DA, Bezanson R, Bouwens R, Chemerynska I, Claeyssens A, Dessauges-Zavadsky M, Frebel A, Korber D, Labbe I, Marques-Chaves R, Matthee JJ, McQuinn KBW, Muñoz JB, Natarajan P, Saldana-Lopez A, Suess KA, Volonteri M, Zitrin A. 2025. GLIMPSE: An ultrafaint ≃10^5 M⊙ Pop III galaxy candidate and first constraints on the Pop III UV luminosity function at z ≃ 6–7. The Astrophysical Journal. 989, 46.

[Published Version] View | Files available | DOI

Environmental evidence for overly massive Black Holes in low-mass galaxies and a Black Hole–Halo mass relation at z ∼ 5
J.J. Matthee, R.P. Naidu, G. Kotiwale, L.J. Furtak, I. Kramarenko, R. Mackenzie, J. Greene, A. Adamo, R.J. Bouwens, C. Di Cesare, A.-C. Eilers, A. de Graaff, K.E. Heintz, D. Kashino, M.V. Maseda, S. Tacchella, A. Torralba Torregrosa, The Astrophysical Journal 988 (2025).

[Published Version] View | Files available | DOI | arXiv

Mapping dusty galaxy growth at z > 5 with FRESCO: Detection of Hα in submm galaxy HDF850.1 and the surrounding overdense structures
Herard-Demanche T, Bouwens RJ, Oesch PA, Naidu RP, Decarli R, Nelson EJ, Brammer G, Weibel A, Xiao M, Stefanon M, Walter F, Matthee JJ, Meyer RA, Wuyts S, Reddy N, Rowland L, van Leeuwen I, Haro PA, Dannerbauer H, Shapley AE, Chisholm J, van Dokkum P, Labbe I, Illingworth G, Schaerer D, Shivaei I. 2025. Mapping dusty galaxy growth at z > 5 with FRESCO: Detection of Hα in submm galaxy HDF850.1 and the surrounding overdense structures. Monthly Notices of the Royal Astronomical Society. 537(2), 788–808.

[Published Version] View | Files available | DOI | arXiv

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