SIMBAD references

2023ApJ...944..159F - Astrophys. J., 944, 159 (2023/February-3)

In Situ Star Formation in Accretion Disks and Explanation of Correlation between the Black Hole Mass and Metallicity in Active Galactic Nuclei.

FAN X. and WU Q.

Abstract (from CDS):

Recent observations show that the metallicity ZBLR of the broad-line region (BLR) in active galactic nuclei (AGNs) is solar to supersolar, which is positively correlated with the mass of supermassive black holes (MBH) and does not evolve with the redshift up to z ∼ 7. We revisit the MBH-ZBLR correlation with more AGNs with MBH ∼ 106–8 M and find that the positive correlation becomes flat in the low-mass range. It is known that the outer part of accretion disks is gravitationally unstable and can fragment into stars. Considering the star formation and supernovae in the outer AGN disk, we calculate the metal enrichment and find that the positive MBH-ZBLR correlation can be roughly reproduced if the stellar mass distribution is “top heavy.” We find that the observed BLR size is more or less similar to the self-gravity radius of the AGN disk, which suggests that the BLR may be closely correlated with the underlying accretion process.

Abstract Copyright: © 2023. The Author(s). Published by the American Astronomical Society.

Journal keyword(s): High-luminosity active galactic nuclei - Galaxy accretion - Metallicity - Star formation

Status at CDS : Large table(s) will be appraised for possible ingestion in VizieR.

Simbad objects: 168

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