Matches in SemOpenAlex for { <https://semopenalex.org/work/W3204334576> ?p ?o ?g. }
- W3204334576 endingPage "3238" @default.
- W3204334576 startingPage "3226" @default.
- W3204334576 abstract "We perform high-resolution cosmological hydrodynamic simulations to study the formation of the first galaxies that reach the masses of $10^{8-9}~h^{-1}~M_odot$ at $z=9$. The resolution of the simulations is high enough to resolve minihaloes and allow us to successfully pursue the formation of multiple Population (Pop) III stars, their supernova (SN) explosions, resultant metal-enrichment of the inter-galactic medium (IGM) in the course of the build-up of the system. Metals are ejected into the IGM by multiple Pop III SNe, but some of the metal-enriched gas falls back onto the halo after $gtrsim 100~rm Myr$. The star formation history of the first galaxy depends sensitively on the initial mass function (IMF) of Pop III stars. The dominant stellar population transits from Pop III to Pop II at $zsim 12-15$ in the case of power-law Pop III IMF, ${rm d}n/{rm d}M propto M^{-2.35}$ with the mass range $10-500~M_odot$. At $zlesssim 12$, stars are stably formed in the first galaxies with a star formation rate of $sim 10^{-3}$-$10^{-1}~M_odot/{rm yr}$. In contrast, for the case with a flat IMF, gas-deprived first galaxies form due to frequent Pop III pair-instability SNe, resulting in the suppression of subsequent Pop II star formation. In addition, we calculate UV continuum, Ly$alpha$- and H$alpha$-line fluxes from the first galaxies. We show that the James Webb Space Telescope will be able to detect both UV continuum, Ly$alpha$ and H$alpha$ line emission from first galaxies with halo mass $gtrsim 10^{9}~M_odot$ at $z gtrsim 10$." @default.
- W3204334576 created "2021-10-11" @default.
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- W3204334576 creator A5030376891 @default.
- W3204334576 creator A5043220042 @default.
- W3204334576 creator A5066500271 @default.
- W3204334576 date "2021-10-02" @default.
- W3204334576 modified "2023-10-16" @default.
- W3204334576 title "Formation of the first galaxies in the aftermath of the first supernovae" @default.
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