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Garza, SL, Werk, JK, Oppenheimer, BD, Tchernyshyov, K, Sanchez, NN, Faerman, Y, Rubin, KHR, Bentz, MC, Davies, JJ, Burchett, JN, Crain, RA and Prochaska, JX (2024) The COS-Holes Survey: Connecting Galaxy Black Hole Mass with the State of the CGM. The Astrophysical Journal, 970. ISSN 0004-637X
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The COS-Holes Survey Connecting Galaxy Black Hole Mass with the State of the CGM.pdf - Published Version Available under License Creative Commons Attribution. Download (1MB) | Preview |
Abstract
We present an analysis of Hubble Space Telescope COS/G160M observations of C IV in the inner circumgalactic medium (CGM) of a novel sample of eight z ∼ 0, L ≈ L ⋆ galaxies, paired with UV-bright QSOs at impact parameters (R proj) between 25 and 130 kpc. The galaxies in this stellar-mass-controlled sample (log10 M ⋆/M ⊙ ∼ 10.2-10.9 M ⊙) host supermassive black holes (SMBHs) with dynamically measured masses spanning log10 M BH/M ⊙ ∼ 6.8-8.4; this allows us to compare our results with models of galaxy formation where the integrated feedback history from the SMBH alters the CGM over long timescales. We find that the C IV column density measurements (N C IV; average log10 N C IV,CH = 13.94 ± 0.09 cm−2) are largely consistent with existing measurements from other surveys of N C IV in the CGM (average log10 N C IV,Lit = 13.90 ± 0.08 cm−2), but do not show obvious variation as a function of the SMBH mass. By contrast, specific star formation rate (sSFR) is highly correlated with the ionized content of the CGM. We find a large spread in sSFR for galaxies with log10 M BH/M ⊙ > 7.0, where the CGM C IV content shows a clear dependence on galaxy sSFR but not M BH. Our results do not indicate an obvious causal link between CGM C IV and the mass of the galaxy’s SMBH; however, through comparisons to the EAGLE, Romulus25, and IllustrisTNG simulations, we find that our sample is likely too small to constrain such causality.
| Item Type: | Article |
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| Uncontrolled Keywords: | 0201 Astronomical and Space Sciences; 0202 Atomic, Molecular, Nuclear, Particle and Plasma Physics; 0306 Physical Chemistry (incl. Structural); Astronomy & Astrophysics |
| Subjects: | Q Science > QB Astronomy Q Science > QC Physics |
| Divisions: | Astrophysics Research Institute |
| Publisher: | American Astronomical Society |
| SWORD Depositor: | A Symplectic |
| Date Deposited: | 08 Oct 2024 14:59 |
| Last Modified: | 08 Oct 2024 15:00 |
| DOI or ID number: | 10.3847/1538-4357/ad4ecc |
| URI: | https://researchonline.ljmu.ac.uk/id/eprint/24454 |
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