---
res:
  bibo_abstract:
  - Supermassive black holes (SMBHs) with masses of ∼109 M⊙ within the first billion
    year of the universe challenge our conventional understanding of black hole formation
    and growth. One pathway to these SMBHs proposes that supermassive stars born in
    pristine atomic cooling haloes yield massive seed BHs evolving to these early
    SMBHs. This scenario leads to an overly massive BH galaxy (OMBG), in which the
    BH to stellar mass ratio is initially Mbh/M* ≥ 1, well in excess of the typical
    values of ∼10−3 at low redshifts. Previously, we have investigated two massive
    seed BH candidates from the Renaissance simulation and found that they remain
    outliers on the Mbh–M* relation until the OMBG merges with a much more massive
    halo at z = 8. In this work, we use Monte-Carlo merger trees to investigate the
    evolution of the Mbh–M* relation for 50 000 protogalaxies hosting massive BH seeds,
    across 10 000 trees that merge into a 1012 M⊙ halo at z = 6. We find that up to
    60 per cent (depending on growth parameters) of these OMBGs remain strong outliers
    for several 100 Myr, down to redshifts detectable with JWST and with sensitive
    X-ray telescopes. This represents a way to diagnose the massive-seed formation
    pathway for early SMBHs. We expect to find ∼0.1–1 of these objects per JWST Near
    Infrared Camera (NIRCam) field per unit redshift at z ≳ 6. Recently detected SMBHs
    with masses of ∼107 M⊙ and low-inferred stellar-mass hosts may be examples of
    this population.@eng
  bibo_authorlist:
  - foaf_Person:
      foaf_givenName: Matthew T
      foaf_name: Scoggins, Matthew T
      foaf_surname: Scoggins
  - foaf_Person:
      foaf_givenName: Zoltán
      foaf_name: Haiman, Zoltán
      foaf_surname: Haiman
      foaf_workInfoHomepage: http://www.librecat.org/personId=7c006e8c-cc0d-11ee-8322-cb904ef76f36
  bibo_doi: 10.1093/mnras/stae1449
  bibo_issue: '4'
  bibo_volume: 531
  dct_date: 2024^xs_gYear
  dct_isPartOf:
  - http://id.crossref.org/issn/0035-8711
  - http://id.crossref.org/issn/1365-2966
  dct_language: eng
  dct_publisher: Oxford University Press@
  dct_title: 'Diagnosing the massive-seed pathway to high-redshift black holes: statistics
    of the evolving black hole to host galaxy mass ratio@'
...