The connection between star formation and supermassive Black Hole activity in the local Universe

O Torbaniuk; M Paolillo; F Carrera; S Cavuoti; C Vignali; G Longo; J Aird

doi:10.1093/mnras/stab1794

The connection between star formation and supermassive Black Hole activity in the local Universe

O Torbaniuk^*, M Paolillo, F Carrera, S Cavuoti, C Vignali, G Longo, J Aird

^*Corresponding author for this work

School of Physics and Astronomy

Research output: Contribution to journal › Article › peer-review

Abstract

We present a study of the active galactic nucleus (AGN) activity in the local Universe (z < 0.33) and its correlation with the host galaxy properties, derived from an Sloan Digital Sky Survey (SDSS DR8) sample with spectroscopic star-formation rate (SFR) and stellar mass (⁠M∗

⁠) determination. To quantify the level of AGN activity we used X-ray information from the XMM-Newton Serendipitous Source Catalogue (3XMM DR8). Applying multiwavelength AGN selection criteria (optical BPT-diagrams, X-ray/optical ratio etc) we found that 24 per cent of the detected sources are efficiently-accreting AGN with moderate-to-high X-ray luminosity, which are twice as likely to be hosted by star-forming galaxies than by quiescent ones. The distribution of the specific Black Hole accretion rate (sBHAR, λ_sBHAR) shows that nuclear activity in local, non-AGN dominated galaxies peaks at very low accretion rates (−4 ≲ log λ_sBHAR ≲ −3) in all stellar mass ranges. However, we observe systematically larger values of sBHAR for galaxies with active star-formation than for quiescent ones, as well as an increase of the mean λ_sBHAR with SFR for both star-forming and quiescent galaxies. These findings confirm the decreased level of AGN activity with cosmic time and are consistent with a scenario where both star-formation and AGN activity are fuelled by a common gas reservoir.

Original language	English
Pages (from-to)	2619-2637
Number of pages	19
Journal	Monthly Notices of the Royal Astronomical Society
Volume	506
Issue number	2
Early online date	28 Jun 2021
DOIs	https://doi.org/10.1093/mnras/stab1794
Publication status	Published - 1 Sept 2021

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astro-ph.GA

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10.1093/mnras/stab1794

2106.11079v1Accepted author manuscript, 4.89 MB

Connecting the lifecycles of galaxies and their central black holes
Aird, J. (Principal Investigator) & Best, P. (Co-investigator)
Other
1/11/20 → 31/10/24
Project: Research

Cite this

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abstract = "We present a study of the active galactic nucleus (AGN) activity in the local Universe (z < 0.33) and its correlation with the host galaxy properties, derived from an Sloan Digital Sky Survey (SDSS DR8) sample with spectroscopic star-formation rate (SFR) and stellar mass (⁠M∗⁠) determination. To quantify the level of AGN activity we used X-ray information from the XMM-Newton Serendipitous Source Catalogue (3XMM DR8). Applying multiwavelength AGN selection criteria (optical BPT-diagrams, X-ray/optical ratio etc) we found that 24 per cent of the detected sources are efficiently-accreting AGN with moderate-to-high X-ray luminosity, which are twice as likely to be hosted by star-forming galaxies than by quiescent ones. The distribution of the specific Black Hole accretion rate (sBHAR, λsBHAR) shows that nuclear activity in local, non-AGN dominated galaxies peaks at very low accretion rates (−4 ≲ log λsBHAR ≲ −3) in all stellar mass ranges. However, we observe systematically larger values of sBHAR for galaxies with active star-formation than for quiescent ones, as well as an increase of the mean λsBHAR with SFR for both star-forming and quiescent galaxies. These findings confirm the decreased level of AGN activity with cosmic time and are consistent with a scenario where both star-formation and AGN activity are fuelled by a common gas reservoir.",

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AU - Cavuoti, S

AU - Vignali, C

AU - Longo, G

AU - Aird, J

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The connection between star formation and supermassive Black Hole activity in the local Universe

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Connecting the lifecycles of galaxies and their central black holes

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