The Formation of Galaxies Hosting z~6 Quasars

Abstract

We investigate the formation and properties of galaxies hosting z~6 quasars, in the gigaparsec scale cosmological hydrodynamical simulation: MassiveBlack, which includes a self-consistent model for star formation, black hole accretion and associated feedback. We show that the MassiveBlack reproduces current estimates of the galaxy stellar mass function z=5, 6. We find that quasar hosts in the simulation are compact gas rich systems with high star formations rates of SFR ~ 100-1000 Msun/yr consistent with observed properties of Sloan quasar hosts in the redshift range 5.5 < z < 6.5. We show that the star-forming gas in these galaxies predominantly originates from high density cold streams which are able to penetrate the halo and grow the galaxy at the center. MassiveBlack predicts a deviation from the local Mbh-sigma and Mbh-Mstar relation implying that black holes are relatively more massive for a given stellar host at these redshifts.

12 pages, 8 figures

References in corpus (15)

• Cold streams in early massive hot haloes as the main mode of galaxy formation
• The hierarchical formation of the brightest cluster galaxies
• A luminous quasar at a redshift of z = 7.085
• An Observational Determination of the Bolometric Quasar Luminosity Function
• A unified model for AGN feedback in cosmological simulations of structure formation
• Formation of Supermassive Black Holes by Direct Collapse in Pregalactic Halos
• Direct cosmological simulations of the growth of black holes and galaxies
• Two ten-billion-solar-mass black holes at the centres of giant elliptical galaxies
• Formation of z ~ 6 quasars from hierarchical galaxy mergers
• A Kiloparsec-Scale Hyper-Starburst in a Quasar Host Less than 1 Gigayear after the Big Bang
• Quasars at z=6: the survival of the fittest
• Thermal Emission from Warm Dust in the Most Distant Quasars
• Understanding the H2/HI Ratio in Galaxies
• Far-infrared and Molecular CO Emission From the Host Galaxies of Faint Quasars at z~6
• Supermassive Black Holes and Their Environments

Cited by in corpus (39)

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• The MassiveBlack-II Simulation: The Evolution of Halos and Galaxies to z~0
• The Current Status of Galaxy Formation
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• Feedback from Active Galactic Nuclei: Energy- versus momentum-driving
• The impact of mechanical AGN feedback on the formation of massive early-type galaxies
• Star formation rate and dynamical mass of 10^8 solar mass black hole host galaxies at redshift 6
• Redshift 6.4 host galaxies of 10^8 solar mass black holes: low star formation rate and dynamical mass
• The environment of bright QSOs at z ~ 6: Star forming galaxies and X-ray emission
• The (black hole)-bulge mass scaling relation at low masses
• Black Hole Mass Scaling Relations for Early-Type Galaxies: $M_{BH}$-$M_{\ast ,sph}$ and $M_{BH}$-$M_{\ast ,gal}$
• The Coevolution of Supermassive Black Holes and Massive Galaxies at High Redshift
• Galaxy bulges and their massive black holes: a review
• Black Hole Mass Scaling Relations for Spiral Galaxies. I. $M_{\mathrm{BH}}$-$M_{\ast ,\mathrm{sph}}$
• Supermassive black hole formation by the cold accretion shocks in the first galaxies
• Turbulent Cold Flows Gave Birth to the First Quasars
• High-redshift quasars host galaxies: is there a stellar mass crisis?
• Massive relic galaxies challenge the co-evolution of SMBHs and their host galaxies
• On the formation of the first quasars
• The anatomy of an extreme starburst within 1.3Gyr of the Big Bang revealed by ALMA
• First Light And Reionisation Epoch Simulations (FLARES) V: The redshift frontier
• The dust content of QSO hosts at high redshift
• The evolution of SMBH spin and AGN luminosities for $z<6$ within a semi-analytic model of galaxy formation
• Host galaxies of high-redshift quasars: supermassive black hole growth and feedback
• Appreciating mergers for understanding the non-linear $M_{\mathrm{bh}}$-$M_{\ast ,\mathrm{spheroid}}$ and $M_{\mathrm{bh}}$-$M_{\ast ,\mathrm{galaxy}}$ relations, updated herein, and the implications for the (reduced) role of AGN feedback
• High redshift supermassive blackholes: accretion through cold flows
• What produces the far-infrared/submm emission in the most luminous QSOs?
• Large scale simulations of H and He reionization and heating driven by stars and more energetic sources
• Exploring the unusually high black hole-to-bulge mass ratios in NGC4342 and NGC4291: the asynchronous growth of bulges and black holes
• Star formation and black hole growth at z=4.8
• The interstellar medium distribution, gas kinematics, and system dynamics of the far-infrared luminous quasar SDSS J2310+1855 at $z=6.0$
• Disky elliptical galaxies and the allegedly over-massive black hole in the compact massive `ES' galaxy NGC 1271
• The host galaxies of z=7 quasars: predictions from the BlueTides simulation
• A tiny host galaxy for the first giant black hole: $z=7.5$ quasar in BlueTides
• The ALHAMBRA survey: Discovery of a faint QSO at z = 5.41
• AGNs at the cosmic dawn: predictions for future surveys from a $\Lambda$CDM cosmological model
• Growth and anisotropy of ionization fronts near high redshift quasars in the MassiveBlack simulation
• Massive black holes in high-redshift Lyman Break Galaxies
• Elliptical (E) and ellicular (ES) galaxies in the M_bh-M_*,sph diagram, and a merger-driven explanation for the origin of ES galaxies, anti-truncated stellar discs in lenticular galaxies, and the Sersicification of E galaxy light profiles