Publication

The hierarchical assembly of galaxies and black holes in the first billion years: predictions for the era of gravitational wave astronomy

Dayal, P., Rossi, E. M., Shiralilou, B., Piana, O., Choudhury, T. R. & Volonteri, M., 1-Jun-2019, In : Monthly Notices of the Royal Astronomical Society. 486, 2, p. 2336-2350 15 p.

Research output: Contribution to journalArticleAcademicpeer-review

APA

Dayal, P., Rossi, E. M., Shiralilou, B., Piana, O., Choudhury, T. R., & Volonteri, M. (2019). The hierarchical assembly of galaxies and black holes in the first billion years: predictions for the era of gravitational wave astronomy. Monthly Notices of the Royal Astronomical Society, 486(2), 2336-2350. https://doi.org/10.1093/mnras/stz897

Author

Dayal, Pratika ; Rossi, Elena M. ; Shiralilou, Banafsheh ; Piana, Olmo ; Choudhury, Tirthankar Roy ; Volonteri, Marta. / The hierarchical assembly of galaxies and black holes in the first billion years: predictions for the era of gravitational wave astronomy. In: Monthly Notices of the Royal Astronomical Society. 2019 ; Vol. 486, No. 2. pp. 2336-2350.

Harvard

Dayal, P, Rossi, EM, Shiralilou, B, Piana, O, Choudhury, TR & Volonteri, M 2019, 'The hierarchical assembly of galaxies and black holes in the first billion years: predictions for the era of gravitational wave astronomy', Monthly Notices of the Royal Astronomical Society, vol. 486, no. 2, pp. 2336-2350. https://doi.org/10.1093/mnras/stz897

Standard

The hierarchical assembly of galaxies and black holes in the first billion years: predictions for the era of gravitational wave astronomy. / Dayal, Pratika; Rossi, Elena M.; Shiralilou, Banafsheh; Piana, Olmo; Choudhury, Tirthankar Roy; Volonteri, Marta.

In: Monthly Notices of the Royal Astronomical Society, Vol. 486, No. 2, 01.06.2019, p. 2336-2350.

Research output: Contribution to journalArticleAcademicpeer-review

Vancouver

Dayal P, Rossi EM, Shiralilou B, Piana O, Choudhury TR, Volonteri M. The hierarchical assembly of galaxies and black holes in the first billion years: predictions for the era of gravitational wave astronomy. Monthly Notices of the Royal Astronomical Society. 2019 Jun 1;486(2):2336-2350. https://doi.org/10.1093/mnras/stz897


BibTeX

@article{104904d0719d42a8868006b0f041fb09,
title = "The hierarchical assembly of galaxies and black holes in the first billion years: predictions for the era of gravitational wave astronomy",
abstract = "In this work, we include black hole (BH) seeding, growth, and feedback into our semi-analytic galaxy formation model, Delphi. Our model now fully tracks the accretion- and merger-driven hierarchical assembly of the dark matter halo, gas, stellar, and BH masses of high-redshift (z ≳ 5) galaxies. We explore a number of physical scenarios that include (i) two types of BH seeds (stellar and those from direct collapse BH); (ii) the impact of reionization; and (iii) the impact of instantaneous versus delayed galaxy mergers on the baryonic growth. Using a minimal set of mass- and z-independent free parameters associated with star formation and BH growth, and their associated feedback, and including the suppressed BH growth in lower mass galaxies, we show that our model successfully reproduces all available data sets for early galaxies and quasars. While both reionization and delayed galaxy mergers have no sensible impact on the evolving ultraviolet luminosity function, the impact of the former dominates in determining the stellar mass density for observed galaxies as well as the BH mass function. We then use this model to predict the LISA detectability of merger events at high-z. As expected, mergers of stellar BHs dominate the merger rates for all scenarios and our model predicts an expected upper limit of about 20 mergers using instantaneous merging and no reionization feedback over the 4-yr mission duration. Including the impact of delayed mergers and reionization feedback provides about 12 events over the same observational time-scale.",
keywords = "Galaxies: high-redshift, formation, evolution, star formation, quasars: super massive black holes; gravitational waves, Astrophysics - Astrophysics of Galaxies",
author = "Pratika Dayal and Rossi, {Elena M.} and Banafsheh Shiralilou and Olmo Piana and Choudhury, {Tirthankar Roy} and Marta Volonteri",
year = "2019",
month = "6",
day = "1",
doi = "10.1093/mnras/stz897",
language = "English",
volume = "486",
pages = "2336--2350",
journal = "Monthly Notices of the Royal Astronomical Society",
issn = "0035-8711",
publisher = "Oxford University Press",
number = "2",

}

RIS

TY - JOUR

T1 - The hierarchical assembly of galaxies and black holes in the first billion years: predictions for the era of gravitational wave astronomy

AU - Dayal, Pratika

AU - Rossi, Elena M.

AU - Shiralilou, Banafsheh

AU - Piana, Olmo

AU - Choudhury, Tirthankar Roy

AU - Volonteri, Marta

PY - 2019/6/1

Y1 - 2019/6/1

N2 - In this work, we include black hole (BH) seeding, growth, and feedback into our semi-analytic galaxy formation model, Delphi. Our model now fully tracks the accretion- and merger-driven hierarchical assembly of the dark matter halo, gas, stellar, and BH masses of high-redshift (z ≳ 5) galaxies. We explore a number of physical scenarios that include (i) two types of BH seeds (stellar and those from direct collapse BH); (ii) the impact of reionization; and (iii) the impact of instantaneous versus delayed galaxy mergers on the baryonic growth. Using a minimal set of mass- and z-independent free parameters associated with star formation and BH growth, and their associated feedback, and including the suppressed BH growth in lower mass galaxies, we show that our model successfully reproduces all available data sets for early galaxies and quasars. While both reionization and delayed galaxy mergers have no sensible impact on the evolving ultraviolet luminosity function, the impact of the former dominates in determining the stellar mass density for observed galaxies as well as the BH mass function. We then use this model to predict the LISA detectability of merger events at high-z. As expected, mergers of stellar BHs dominate the merger rates for all scenarios and our model predicts an expected upper limit of about 20 mergers using instantaneous merging and no reionization feedback over the 4-yr mission duration. Including the impact of delayed mergers and reionization feedback provides about 12 events over the same observational time-scale.

AB - In this work, we include black hole (BH) seeding, growth, and feedback into our semi-analytic galaxy formation model, Delphi. Our model now fully tracks the accretion- and merger-driven hierarchical assembly of the dark matter halo, gas, stellar, and BH masses of high-redshift (z ≳ 5) galaxies. We explore a number of physical scenarios that include (i) two types of BH seeds (stellar and those from direct collapse BH); (ii) the impact of reionization; and (iii) the impact of instantaneous versus delayed galaxy mergers on the baryonic growth. Using a minimal set of mass- and z-independent free parameters associated with star formation and BH growth, and their associated feedback, and including the suppressed BH growth in lower mass galaxies, we show that our model successfully reproduces all available data sets for early galaxies and quasars. While both reionization and delayed galaxy mergers have no sensible impact on the evolving ultraviolet luminosity function, the impact of the former dominates in determining the stellar mass density for observed galaxies as well as the BH mass function. We then use this model to predict the LISA detectability of merger events at high-z. As expected, mergers of stellar BHs dominate the merger rates for all scenarios and our model predicts an expected upper limit of about 20 mergers using instantaneous merging and no reionization feedback over the 4-yr mission duration. Including the impact of delayed mergers and reionization feedback provides about 12 events over the same observational time-scale.

KW - Galaxies: high-redshift

KW - formation

KW - evolution

KW - star formation

KW - quasars: super massive black holes; gravitational waves

KW - Astrophysics - Astrophysics of Galaxies

U2 - 10.1093/mnras/stz897

DO - 10.1093/mnras/stz897

M3 - Article

VL - 486

SP - 2336

EP - 2350

JO - Monthly Notices of the Royal Astronomical Society

JF - Monthly Notices of the Royal Astronomical Society

SN - 0035-8711

IS - 2

ER -

ID: 94910240