GN-z11: Witnessing the formation of second-generation stars and an accreting massive black hole in a massive star cluster

被引：10

作者：

D'Antona, F. ^{[1
]}

Vesperini, E. ^{[2
]}

Calura, F. ^{[3
]}

Ventura, P. ^{[1
]}

D'Ercole, A. ^{[3
]}

Caloi, V. ^{[4
]}

Marino, A. F. ^{[5
,6
]}

Milone, A. P. ^{[5
,7
]}

Dell'Agli, F. ^{[1
]}

Tailo, M. ^{[8
]}

机构：

[1] Ist Nazl Astrofis, Osservatorio Astron Roma, Via Frascati 33, I-00077 Monte Porzio Catone, Italy

[2] Indiana Univ, Dept Astron, 727 E 3rd St, Bloomington, IN 47405 USA

[3] INAF OAS, Osservatorio Astrofis & Sci Spazio Bologna, Via Gobetti 93-3, I-40129 Bologna, Italy

[4] Ist Nazl Astrofis, Ist Astrofis & Planetol Spaziali, Via Fosso Cavaliere 100, I-00133 Rome, Italy

[5] Ist Nazl Astrofis, Osservatorio Astron Padova, Vicolo Osservatorio 5, I-35122 Padua, Italy

[6] Ist Nazl Astrofis, Osservatorio Astrofis Arcetri, Largo Enrico Fermi 5, I-50125 Florence, Italy

[7] Univ Padua, Dipartimento Fis & Astron Galileo Galilei, Vicolo Osservatorio 3, I-35122 Padua, Italy

[8] Univ Bologna, Dipartimento Fis & Astron Augusto Righi, Via Gobetti 93-2, I-40129 Bologna, Italy

来源：

ASTRONOMY & ASTROPHYSICS | 2023年 / 680卷

关键词：

stars: AGB and post-AGB; stars: black holes; galaxies: clusters: general; galaxies: formation; galaxies: high-redshift; GLOBULAR-CLUSTERS; SUPERMASSIVE STARS; CHEMICAL INVENTORY; EVOLUTION; NITROGEN; ABUNDANCES; NUCLEOSYNTHESIS; POPULATIONS; POTASSIUM; POLLUTION;

D O I：

10.1051/0004-6361/202348240

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We explore the possibility that the N-rich young proto-galaxy GN-z11 recently observed at z=10.6 by the James Webb Space Telescope is the result of the formation of second generation stars from pristine gas and Asymptotic Giant Branch (AGB) ejecta in a massive globular cluster or nuclear star cluster. We show that a second generation forming out of gas polluted by the ejecta of massive AGB stars and mixed with gas having a standard composition accounts for the unusually large N/O in the GN-z11 spectrum. The timing of the evolution of massive (4-7.5M(circle dot)) AGBs also provides a favourable environment for the growth of a central stellar mass black hole to the Active Galactic Nucleus stage observed in GN-z11. According to our model the progenitor system was born at an age of the Universe of similar or equal to 260-380Myr, well within the pre-reionization epoch.

引用

页数：6

共 26 条

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