The DOI matches its Crossref record; 114 of the 114 references it cites were found in a registry or an index.
Physical Properties of 15 Quasars at z ≳ 6.5
Open accessAbstract
Quasars are galaxies hosting accreting supermassive black holes; due to their brightness, they are unique probes of the early universe. To date, only a few quasars have been reported at (<800 Myr after the big bang). In this work, we present six additional quasars discovered using the Pan-STARRS1 survey. We use a sample of 15 quasars to perform a homogeneous and comprehensive analysis of this highest-redshift quasar population. We report four main results: (1) the majority of quasars show large blueshifts of the broad C iv λ 1549 emission line compared to the systemic redshift of the quasars, with a median value ∼3× higher than a quasar sample at ; (2) we estimate the quasars’ black hole masses ( (0.3–5) × 10 9 M ⊙) via modeling of the Mg ii λ 2798 emission line and rest-frame UV continuum and find that quasars at high redshift accrete their material (with ) at a rate comparable to a luminosity-matched sample at lower redshift, albeit with significant scatter (0.4 dex); (3) we recover no evolution of the Fe ii/Mg ii abundance ratio with cosmic time; and (4) we derive near-zone sizes and, together with measurements for quasars from recent work, confirm a shallow evolution of the decreasing quasar near-zone sizes with redshift. Finally, we present new millimeter observations of the [C ii] 158 μ m emission line and underlying dust continuum from NOEMA for four quasars and provide new accurate redshifts and [C ii]/infrared luminosity estimates. The analysis presented here shows the large range of properties of the most distant quasars.
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Cites
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BackgroundInfluentialPlanck 2015 results. XIII. Cosmological parameters
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Cited by
De re metallica: the cosmic chemical evolution of galaxies
Maiolino, R., & Mannucci, F. (2019) · The Astronomy and Astrophysics Review · doi:10.1007/s00159-018-0112-2 · Cited by 697
The Assembly of the First Massive Black Holes
Inayoshi, K., Visbal, E., & Haiman, Z. (2020) · Annual Review of Astronomy and Astrophysics · doi:10.1146/annurev-astro-120419-014455 · Cited by 665
The bolometric quasar luminosity function at z = 0–7
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An ALMA [C ii] Survey of 27 Quasars at z > 5.94
Decarli, R., Walter, F., Venemans, B. P., Bañados, E., Bertoldi, F., Carilli, C., Fan, X., Farina, E. P., Mazzucchelli, C., Riechers, D., et al. (2018) · The Astrophysical Journal · doi:10.3847/1538-4357/aaa5aa · Cited by 308
Self-citationQuasars and the Intergalactic Medium at Cosmic Dawn
Fan, X., Bañados, E., & Simcoe, R. A. (2023) · Annual Review of Astronomy and Astrophysics · doi:10.1146/annurev-astro-052920-102455 · Cited by 304
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Metadata
- Authors
- Mazzucchelli, C., Bañados, E., Venemans, B. P., Decarli, R., Farina, E. P., Walter, F., Eilers, A.-C., Rix, H.-W., Simcoe, R., Stern, D., Fan, X., Schlafly, E., Rosa, G. D., Hennawi, J., Chambers, K. C., Greiner, J., Burgett, W., Draper, P. W., Kaiser, N., Kudritzki, R.-P., Magnier, E., Metcalfe, N., Waters, C., & Wainscoat, R. J.
- Venue
- The Astrophysical Journal
- Publisher
- American Astronomical Society
- Published
- 2017-11-06
- Volume
- 849
- Issue
- 2
- Pages
- 91
- ISSN
- 0004-637X (ISSN-L)
- 1538-4357
- OpenAlex
- W2763201488
- Cited by
- 305
- References
- 114
- FWCI
- 18.31
- Type
- journal article
- Language
- en
- Open access
- bronze
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- Mazzucchelli, C., Bañados, E., Venemans, B. P., Decarli, R., Farina, E. P., Walter, F., Eilers, A.-C., Rix, H.-W., Simcoe, R., Stern, D., Fan, X., Schlafly, E., Rosa, G. D., Hennawi, J., Chambers, K. C., Greiner, J., Burgett, W., Draper, P. W., Kaiser, N., . . . Wainscoat, R. J. (2017). Physical Properties of 15 Quasars at z ≳ 6.5. The Astrophysical Journal. https://doi.org/10.3847/1538-4357/aa9185
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