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- W2783758213 abstract "The scaling relations between the mass of supermassive black holes (M•) and host galaxy properties (stellar mass, M⋆, and velocity dispersion, σ) provide a link between the growth of black holes (BHs) and that of their hosts. Here we investigate if and how the BH−galaxy relations are established in the high-|$z$| Universe using BlueTides, a high-resolution large volume cosmological hydrodynamic simulation. We find the M•−M⋆ and M•−σ relations at |$z$| = 8: log10(M•) = 8.25 + 1.10 log10(M⋆/1011 M⊙) and log10(M•) = 8.35 + 5.31 log10(σ/200 km s−1) at |$z$| = 8, both fully consistent with the local measurements. The slope of the M•−σ relation is slightly steeper for high star formation rate and M⋆ galaxies while it remains unchanged as a function of Eddington accretion rate on to the BH. The intrinsic scatter in M•−σ relation in all cases (ε ∼ 0.4) is larger at these redshifts than inferred from observations and larger than in M•−M⋆ relation (ε ∼ 0.14). We find the gas-to-stellar ratio f = Mgas/M⋆ in the host (which can be very high at these redshifts) to have the most significant impact setting the intrinsic scatter of M•−σ. The scatter is significantly reduced when galaxies with high gas fractions (ε = 0.28 as f < 10) are excluded (making the sample more comparable to low-|$z$| galaxies); these systems have the largest star formation rates and BH accretion rates, indicating that these fast-growing systems are still moving towards the relation at these high redshifts. Examining the evolution (from |$z$|= 10 to 8) of high-mass BHs in M•−σ plane confirms this trend." @default.
- W2783758213 created "2018-01-26" @default.
- W2783758213 creator A5035375830 @default.
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- W2783758213 creator A5071856444 @default.
- W2783758213 creator A5085422473 @default.
- W2783758213 date "2018-05-18" @default.
- W2783758213 modified "2023-10-18" @default.
- W2783758213 title "BlueTides simulation: establishing black hole−galaxy relations at high redshift" @default.
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- W2783758213 doi "https://doi.org/10.1093/mnras/sty1329" @default.
- W2783758213 hasPublicationYear "2018" @default.
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