Title: High-redshift Galaxy Formation with Self-consistently Modeled Stars and Massive Black Holes: Stellar Feedback and Quasar Growth

Abstract

As computational resolution of modern cosmological simulations come closer to resolving individual star-forming clumps in a galaxy, the need for "resolution-appropriate" physics for a galaxy-scale simulation has never been greater. To this end, we introduce a self-consistent numerical framework that includes explicit treatments of feedback from star-forming molecular clouds (SFMCs) and massive black holes (MBHs). In addition to the thermal supernovae feedback from SFMC particles, photoionizing radiation from both SFMCs and MBHs is tracked through full three-dimensional ray tracing. A mechanical feedback channel from MBHs is also considered. Using our framework, we perform a state-of-the-art cosmological simulation of a quasar-host galaxy at z ~ 7.5 for ~25 Myr with all relevant galactic components, such as dark matter, gas, SFMCs, and an embedded MBH seed of ≳ 10 ⁶ M _⊙. We find that feedback from SFMCs and an accreting MBH suppresses runaway star formation locally in the galactic core region. Newly included radiation feedback from SFMCs, combined with feedback from the MBH, helps the MBH grow faster by retaining gas that eventually accretes on to the MBH. Our experiment demonstrates that previously undiscussed types of interplay between gas, SFMCs, and a MBH may hold important clues about the growth andmore » feedback of quasars and their host galaxies in the high-redshift universe.« less

Authors:

Kim, Ji-hoon  ^[1];

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• Search DOE PAGES for ORCID "0000-0003-4464-1160"
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Wise, John H.  ^[2];

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• Search DOE PAGES for ORCID "0000-0003-1173-8847"
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Abel, Tom ^[3]; Jo, Yongseok ^[1]; Primack, Joel R.  ^[4];

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• Search DOE PAGES for ORCID "0000-0001-5091-5098"
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Hopkins, Philip F.  ^[5]

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• Search DOE PAGES for ORCID "0000-0003-3729-1684"
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+ Show Author Affiliations

1. Seoul National Univ., Seoul (Korea). Center for Theoretical Physics, Dept. of Physics and Astronomy
2. Georgia Inst. of Technology, Atlanta, GA (United States)
3. SLAC National Accelerator Lab., Menlo Park, CA (United States); Stanford Univ., CA (United States)
4. Univ. of California, Santa Cruz, CA (United States)
5. California Institute of Technology (CalTech), Pasadena, CA (United States)

Publication Date:

2019-12-16

Research Org.:

SLAC National Accelerator Lab., Menlo Park, CA (United States)

Sponsoring Org.:

USDOE Office of Science (SC)

OSTI Identifier:

1604568

Grant/Contract Number:  

AC02-76SF00515

Resource Type:

Accepted Manuscript

Journal Name:

The Astrophysical Journal (Online)

Additional Journal Information:

Journal Name: The Astrophysical Journal (Online); Journal Volume: 887; Journal Issue: 2; Journal ID: ISSN 1538-4357

Publisher:

Institute of Physics (IOP)

Country of Publication:

United States

Language:

English

Subject:

galaxies: formation; galaxies: evolution; galaxies: kinematics and dynamics; galaxies: star formation; galaxies: nuclei; ISM: structure; stars: formation; quasars: supermassive black holes; methods: numerical