Deciphering the imprint of AGN feedback in Seyfert galaxies: Nuclear-scale molecular gas deficits
| Autor: | García-Burillo, S., Hicks, E. K. S., Alonso-Herrero, A., Pereira-Santaella, M., Usero, A., Querejeta, M., González-Martin, O., Delaney, D., Almeida, C. Ramos, Combes, F., Anglés-Alcázar, D., Audibert, A., Bellocchi, E., Davies, R. I., Davis, T. A., Elford, J. S., García-Bernete, I., Hönig, S., Labiano, A., Leist, M. T., Levenson, N. A., López-Rodríguez, E., Mercedes-Feliz, J., Packham, C., Ricci, C., Rosario, D. J., Shimizu, T., Stalevski, M., Zhang, L. |
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| Rok vydání: | 2024 |
| Předmět: | |
| Zdroj: | A&A 689, A347 (2024) |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1051/0004-6361/202450268 |
| Popis: | We use a sample of 64 nearby (D=7-45 Mpc) disk galaxies including 45 AGN and 19 non-AGN, that have high spatial resolution multiline CO observations obtained with the ALMA and/or PdBI arrays to study the distribution of cold molecular gas in their circumunuclear disks (CND). We analyze whether the concentration of cold molecular gas changes as a function of the X-ray luminosity in the 2-10 keV range ($L_{\rm X}$). We also study the concentration of the hot molecular gas using NIR data obtained for the H2 1-0S(1) line. We find a turnover in the distribution of the cold molecular gas concentration as a function of $L_{\rm X}$ with a breakpoint which divides the sample into two branches: the AGN build-up branch ($L_{\rm X}\leq10^{41.5\pm0.3}$erg/s) and the AGN feedback branch ($L_{\rm X}\geq10^{41.5\pm0.3}$erg/s) . Lower luminosity AGN and non-AGN of the AGN build-up branch show high cold molecular gas concentrations and centrally peaked radial profiles on nuclear ($r\leq50$~pc) scales. Higher luminosity AGN of the AGN feedback branch, show a sharp decrease in the concentration of molecular gas and flat or inverted radial profiles. The cold molecular gas concentration index ($CCI$), defined as the ratio of surface densities at $r\leq50$~pc and $r\leq200$~pc , namely $CCI \equiv$~log$_{\rm 10}(\Sigma^{\rm gas}_{\rm 50}/\Sigma^{\rm gas}_{\rm 200}$), spans a factor ~4-5 between the galaxies lying at the high end of the AGN build-up branch and the galaxies of the AGN feedback branch. The concentration and radial distributions of the hot molecular gas in our sample follow less extreme trends as a function of the X-ray luminosity. These observations confirm, on a three times larger sample, previous evidence found by the GATOS survey that the imprint of AGN feedback on the CND-scale distribution of molecular gas is more extreme in higher luminosity Seyfert galaxies of the local universe. Comment: Accepted by Astronomy & Astrophysics (A&A) (14/06/2024), 26 pages, 16 figures |
| Databáze: | arXiv |
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