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A CEERS Discovery of an Accreting Supermassive Black Hole 570 Myr after the Big Bang: Identifying a Progenitor of Massive z > 6 Quasars
Open accessAbstract
We report the discovery of an accreting supermassive black hole at z = 8.679. This galaxy, denoted here as CEERS_1019, was previously discovered as a Ly α-break galaxy by Hubble with a Ly α redshift from Keck. As part of the Cosmic Evolution Early Release Science (CEERS) survey, we have observed this source with JWST/NIRSpec, MIRI, NIRCam, and NIRCam/WFSS and uncovered a plethora of emission lines. The H β line is best fit by a narrow plus a broad component, where the latter is measured at 2.5 σ with an FWHM ∼1200 km s−1. We conclude this originates in the broadline region of an active galactic nucleus (AGN). This is supported by the presence of weak high-ionization lines (N V, N IV], and C III]), as well as a spatial point-source component. The implied mass of the black hole (BH) is log (M BH/M ⊙) = 6.95 ± 0.37, and we estimate that it is accreting at 1.2 ± 0.5 times the Eddington limit. The 1–8 μ m photometric spectral energy distribution shows a continuum dominated by starlight and constrains the host galaxy to be massive (log M/M⊙ ∼9.5) and highly star-forming (star formation rate, or SFR ∼ 30 M⊙ yr−1; log sSFR ∼ − 7.9 yr−1). The line ratios show that the gas is metal-poor (Z/Z ⊙ ∼ 0.1), dense (n e ∼ 10 3 cm−3), and highly ionized (log U ∼ − 2.1). We use this present highest-redshift AGN discovery to place constraints on BH seeding models and find that a combination of either super-Eddington accretion from stellar seeds or Eddington accretion from very massive BH seeds is required to form this object.
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Self-citationDi Valentino, E., Said, J. L., Riess, A., Pollo, A., Poulin, V., Gómez-Valent, A., Weltman, A., Palmese, A., Huang, C. D., Bruck, C. V. D., et al. (2025) · Physics of the Dark Universe · doi:10.1016/j.dark.2025.101965 · Cited by 319
Evidence for heavy-seed origin of early supermassive black holes from a z ≈ 10 X-ray quasar
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Metadata
- Authors
- Larson, R. L., Finkelstein, S. L., Kocevski, D. D., Hutchison, T. A., Trump, J. R., Arrabal Haro, P., Bromm, V., Cleri, N. J., Dickinson, M., Fujimoto, S., Kartaltepe, J. S., Koekemoer, A. M., Papovich, C., Pirzkal, N., Tacchella, S., Zavala, J. A., Bagley, M., Behroozi, P., Champagne, J. B., Cole, J. W., Jung, I., Morales, A. M., Yang, G., Zhang, H., Zitrin, A., Amorín, R. O., Burgarella, D., Casey, C. M., Chávez Ortiz, Ó. A., Cox, I. G., Chworowsky, K., Fontana, A., Gawiser, E., Grazian, A., Grogin, N. A., Harish, S., Hathi, N. P., Hirschmann, M., Holwerda, B. W., Juneau, S., Leung, G. C. K., Lucas, R. A., McGrath, E. J., Pérez-González, P. G., Rigby, J. R., Seillé, L.-M., Simons, R. C., de la Vega, A., Weiner, B. J., Wilkins, S. M., Yung, L. Y. A., & and The CEERS Team
- Venue
- The Astrophysical Journal Letters
- Publisher
- American Astronomical Society
- Published
- 2023-08-01
- Volume
- 953
- Issue
- 2
- Pages
- L29
- ISSN
- 2041-8205 (ISSN-L)
- 2041-8213
- OpenAlex
- W4386054147
- Cited by
- 363
- References
- 140
- FWCI
- 42.88
- Type
- journal article
- Language
- en
- Open access
- gold
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- CoChat. (2026). Citation check: A CEERS Discovery of an Accreting Supermassive Black Hole 570 Myr after the Big Bang: Identifying a Progenitor of Massive z > 6 Quasars. https://app.cochat.ai/papers/10.3847/2041-8213/ace619
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- Larson, R. L., Finkelstein, S. L., Kocevski, D. D., Hutchison, T. A., Trump, J. R., Arrabal Haro, P., Bromm, V., Cleri, N. J., Dickinson, M., Fujimoto, S., Kartaltepe, J. S., Koekemoer, A. M., Papovich, C., Pirzkal, N., Tacchella, S., Zavala, J. A., Bagley, M., Behroozi, P., Champagne, J. B., . . . and The CEERS Team. (2023). A CEERS Discovery of an Accreting Supermassive Black Hole 570 Myr after the Big Bang: Identifying a Progenitor of Massive z > 6 Quasars. The Astrophysical Journal Letters. https://doi.org/10.3847/2041-8213/ace619
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