The impact of black hole feedback on the UV luminosity and stellar mass assembly of high-redshift galaxies

Piana, Olmo; Dayal, Pratika; Choudhury, Tirthankar Roy

doi:10.48550/arxiv.2111.03105

Cited by 2 publications

(2 citation statements)

References 85 publications

(118 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…AGN activity may also boost the UV luminosity in these galaxies. Previous studies indicate that the AGN fraction starts to increase at M UV −22 mag (Ono et al 2018;Stevans et al 2018;Adams et al 2020;Harikane et al 2021b, see also Piana et al 2021). If we assume that the UV luminosities of HD1 and HD2 are solely powered by black holes, the inferred black hole masses are ∼ 10 8 M , assuming accretion at the Eddington rate (F. Pacucci et al, in prep.…”

Section: Comparison With Modelsmentioning

confidence: 76%

A Search for H-Dropout Lyman Break Galaxies at z~12-16

Harikane,

Inoue,

Mawatari

et al. 2021

Preprint

Self Cite

View full text Add to dashboard Cite

We present two bright galaxy candidates at z ∼ 13 identified in our H-dropout Lyman break selection with 2.3 deg 2 near-infrared deep imaging data. These galaxy candidates, selected after careful screening of foreground interlopers, have spectral energy distributions showing a sharp discontinuity around 1.7 µm, a flat continuum at 2−5 µm, and non-detections at < 1.2 µm in the available photometric datasets, all of which are consistent with a z ∼ 13 galaxy. An ALMA program targeting one of the candidates shows a tentative 4σ [Oiii]88µm line at z = 13.27, in agreement with its photometric redshift estimate. The number density of the z ∼ 13 candidates is comparable to that of bright z ∼ 10 galaxies, and is consistent with a recently proposed double power-law luminosity function rather than the Schechter function, indicating little evolution in the abundance of bright galaxies from z ∼ 4 to 13. Comparisons with theoretical models show that the models cannot reproduce the bright end of rest-frame ultraviolet luminosity functions at z ∼ 10 − 13. Combined with recent studies reporting similarly bright galaxies at z ∼ 9 − 11 and mature stellar populations at z ∼ 6 − 9, our results indicate the existence of a number of star-forming galaxies at z > 10, which will be detected with upcoming space missions such as James Webb Space Telescope, Nancy Grace Roman Space Telescope, and GREX-PLUS.

show abstract

Section: Comparison With Modelsmentioning

confidence: 76%

A Search for H-Dropout Lyman Break Galaxies at z~12-16

Harikane,

Inoue,

Mawatari

et al. 2021

Preprint

Self Cite

View full text Add to dashboard Cite

show abstract

“…More probable than these "extreme scenarios" is a situation in which the UV luminosity of these z ∼ 13 sources is contributed by a combination of star formation and black hole accretion. Indeed, at z ∼ 5−6, they contribute almost equally to the UV luminosity for MUV ∼ −23.5 galaxies (Ono et al 2018;Piana et al 2021;Harikane et al 2021a). The contribution from star formation would decrease the predicted mass of the black holes, requiring less extreme growth conditions to assemble by z ∼ 13.…”

Section: Conclusion and Discussionmentioning

confidence: 99%

Are the Newly-Discovered $z \sim 13$ Drop-out Sources Starburst Galaxies or Quasars?

Pacucci,

Dayal,

Harikane

et al. 2022

Preprint

Self Cite

View full text Add to dashboard Cite

The detection of two z ∼ 13 galaxy candidates (Harikane et al. 2021b) has opened a new window on galaxy formation at an era only 330 Myr after the Big Bang. Here, we investigate the physical nature of these sources: are we witnessing star forming galaxies or quasars at such early epochs? If powered by star formation, the observed ultraviolet (UV) luminosities and number densities can be jointly explained if: (i) these galaxies are extreme star-formers with star formation rates 5 − 25× higher than those expected from extrapolations of average lower-redshift relations; (ii) the star formation efficiency increases with halo mass and is countered by increasing dust attenuation from z ∼ 10−5; (iii) they form stars with an extremely top-heavy initial mass function. The quasar hypothesis is also plausible, with the UV luminosity produced by black holes of ∼ 10 8 M accreting at or slightly above the Eddington rate (f Edd ∼ 1.0). This black hole mass at z ∼ 13 would require challenging, but not implausible, growth parameters, in line with what required for z ∼ 7.5 quasars detected thus far. If spectroscopically confirmed, these two sources will represent a remarkable laboratory to study the Universe at previously inaccessible redshifts.

show abstract

The impact of black hole feedback on the UV luminosity and stellar mass assembly of high-redshift galaxies

Cited by 2 publications

References 85 publications

A Search for H-Dropout Lyman Break Galaxies at z~12-16

A Search for H-Dropout Lyman Break Galaxies at z~12-16

Are the Newly-Discovered $z \sim 13$ Drop-out Sources Starburst Galaxies or Quasars?

Contact Info

Product

Resources

About