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- W2150183264 abstract "Supermassive stars (SMSs; ≳ 105 M⊙) formed in the first protogalaxies with virial temperature Tvir ≳ 104 K are expected to collapse into seeds of supermassive black hole in the high-redshift Universe (z ≳ 7). Fragmentation of the primordial gas is, however, a possible obstacle to SMS formation. We discuss the expected properties of a compact, metal-free, marginally unstable nuclear protogalactic disc, and the fate of the clumps formed in the disc by gravitational instability. Interior to a characteristic radius Rf = few × 10−2 pc, the disc fragments into massive clumps with Mc ∼ 30 M⊙. The clumps grow via accretion and migrate inward rapidly on a time-scale of ∼104 yr, which is comparable or shorter than the Kelvin–Helmholtz time >104 yr. Some clumps may evolve to zero-age main-sequence stars and halt gas accretion by radiative feedback, but most of the clumps can migrate inward and merge with the central protostar before forming massive stars. Moreover, we found that dust-induced fragmentation in metal-enriched gas does not modify these conclusions unless Z ≳ 3 × 10− 4 Z⊙, because clump migration below this metallicity remains as rapid as in the primordial case. Our results suggest that fragmentation of a compact, metal-poor disc cannot prevent the formation of a SMS." @default.
- W2150183264 created "2016-06-24" @default.
- W2150183264 creator A5047785988 @default.
- W2150183264 creator A5085339462 @default.
- W2150183264 date "2014-10-09" @default.
- W2150183264 modified "2023-09-28" @default.
- W2150183264 title "Does disc fragmentation prevent the formation of supermassive stars in protogalaxies?" @default.
- W2150183264 cites W1595486755 @default.
- W2150183264 cites W1861231237 @default.
- W2150183264 cites W1883916103 @default.
- W2150183264 cites W1964429329 @default.
- W2150183264 cites W1967433269 @default.
- W2150183264 cites W1967957775 @default.
- W2150183264 cites W1975627161 @default.
- W2150183264 cites W1978253505 @default.
- W2150183264 cites W1980243102 @default.
- W2150183264 cites W1980924370 @default.
- W2150183264 cites W1988574583 @default.
- W2150183264 cites W1994010929 @default.
- W2150183264 cites W1994794466 @default.
- W2150183264 cites W1996074109 @default.
- W2150183264 cites W1998581888 @default.
- W2150183264 cites W2004511524 @default.
- W2150183264 cites W2006357369 @default.
- W2150183264 cites W2016258946 @default.
- W2150183264 cites W2017431276 @default.
- W2150183264 cites W2020282587 @default.
- W2150183264 cites W2021204304 @default.
- W2150183264 cites W2025773592 @default.
- W2150183264 cites W2026852029 @default.
- W2150183264 cites W2029159416 @default.
- W2150183264 cites W2035547408 @default.
- W2150183264 cites W2036179433 @default.
- W2150183264 cites W2037732715 @default.
- W2150183264 cites W2038895466 @default.
- W2150183264 cites W2040788677 @default.
- W2150183264 cites W2041685615 @default.
- W2150183264 cites W2044619143 @default.
- W2150183264 cites W2046128110 @default.
- W2150183264 cites W2052528558 @default.
- W2150183264 cites W2061332790 @default.
- W2150183264 cites W2063349913 @default.
- W2150183264 cites W2063655849 @default.
- W2150183264 cites W2064514018 @default.
- W2150183264 cites W2066094420 @default.
- W2150183264 cites W2066809110 @default.
- W2150183264 cites W2073510197 @default.
- W2150183264 cites W2073753053 @default.
- W2150183264 cites W2077944558 @default.
- W2150183264 cites W2083870045 @default.
- W2150183264 cites W2084820236 @default.
- W2150183264 cites W2085926195 @default.
- W2150183264 cites W2088404264 @default.
- W2150183264 cites W2091152621 @default.
- W2150183264 cites W2092693142 @default.
- W2150183264 cites W2095945864 @default.
- W2150183264 cites W2096213430 @default.
- W2150183264 cites W2097133096 @default.
- W2150183264 cites W2112064400 @default.
- W2150183264 cites W2117798693 @default.
- W2150183264 cites W2120036169 @default.
- W2150183264 cites W2121491848 @default.
- W2150183264 cites W2121694879 @default.
- W2150183264 cites W2122287334 @default.
- W2150183264 cites W2125010706 @default.
- W2150183264 cites W2129743734 @default.
- W2150183264 cites W2162462253 @default.
- W2150183264 cites W2162551860 @default.
- W2150183264 cites W2168955357 @default.
- W2150183264 cites W2498126760 @default.
- W2150183264 cites W2964204480 @default.
- W2150183264 cites W2996078885 @default.
- W2150183264 cites W3098183880 @default.
- W2150183264 cites W3099360186 @default.
- W2150183264 cites W3099508716 @default.
- W2150183264 cites W3099510442 @default.
- W2150183264 cites W3100332219 @default.
- W2150183264 cites W3101008065 @default.
- W2150183264 cites W3101092402 @default.
- W2150183264 cites W3102037608 @default.
- W2150183264 cites W3102156830 @default.
- W2150183264 cites W3103038317 @default.
- W2150183264 cites W3103620037 @default.
- W2150183264 cites W3103805048 @default.
- W2150183264 cites W3104090367 @default.
- W2150183264 cites W3104429358 @default.
- W2150183264 cites W3104720847 @default.
- W2150183264 cites W3104884851 @default.
- W2150183264 cites W3105643723 @default.
- W2150183264 cites W3105932956 @default.
- W2150183264 cites W3106001075 @default.
- W2150183264 cites W3121350081 @default.
- W2150183264 cites W3123810912 @default.
- W2150183264 cites W3126135779 @default.
- W2150183264 cites W3216097261 @default.
- W2150183264 cites W1963911648 @default.
- W2150183264 doi "https://doi.org/10.1093/mnras/stu1870" @default.
- W2150183264 hasPublicationYear "2014" @default.