تقرير
LeMMINGs. III. The e-MERLIN Legacy Survey of the Palomar sample. Exploring the origin of nuclear radio emission in active and inactive galaxies through the [O III] -- radio connection
| العنوان: | LeMMINGs. III. The e-MERLIN Legacy Survey of the Palomar sample. Exploring the origin of nuclear radio emission in active and inactive galaxies through the [O III] -- radio connection |
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| المؤلفون: | Baldi, R. D., Williams, D. R. A., Beswick, R. J., McHardy, I., Dullo, B. T., Knapen, J. H., Zanisi, L., Argo, M. K., Aalto, S., Alberdi, A., Baan, W. A., Bendo, G. J., Fenech, D. M., Green, D. A., Klöckner, H. -R., Körding, E., Maccarone, T. J., Marcaide, J. M., Mutie, I., Panessa, F., Pérez-Torres, M. A., Romero-Cañizales, C., Saikia, D. J., Saikia, P., Shankar, F., Spencer, R. E., Stevens, I. R., Uttley, P., Brinks, E., Corbel, S., Martí-Vidal, I., Mundell, C. G., Pahari, M., Ward, M. J. |
| سنة النشر: | 2021 |
| المجموعة: | Astrophysics |
| مصطلحات موضوعية: | Astrophysics - Astrophysics of Galaxies, Astrophysics - High Energy Astrophysical Phenomena |
| الوصف: | What determines the nuclear radio emission in local galaxies? We combine optical [O III] line emission, robust black hole (BH) mass estimates, and high-resolution e-MERLIN 1.5-GHz data, from the LeMMINGs survey, of a statistically-complete sample of 280 nearby, optically active (LINER and Seyfert) and inactive HII and Absorption line galaxies [ALG]) galaxies. Using [O III] luminosity ($L_{\rm [O~III]}$) as a proxy for the accretion power, local galaxies follow distinct sequences in the optical-radio planes of BH activity, which suggest different origins of the nuclear radio emission for the optical classes. The 1.5-GHz radio luminosity of their parsec-scale cores ($L_{\rm core}$) is found to scale with BH mass ($M_{\rm BH}$) and [O~III] luminosity. Below $M_{\rm BH} \sim$10$^{6.5}$ M$_{\odot}$, stellar processes from non-jetted HII galaxies dominate with $L_{\rm core} \propto M_{\rm BH}^{0.61\pm0.33}$ and $L_{\rm core} \propto L_{\rm [O~III]}^{0.79\pm0.30}$. Above $M_{\rm BH} \sim$10$^{6.5}$ M$_{\odot}$, accretion-driven processes dominate with $L_{\rm core} \propto M_{\rm BH}^{1.5-1.65}$ and $L_{\rm core} \propto L_{\rm [O~III]}^{0.99-1.31}$ for active galaxies: radio-quiet/loud LINERs, Seyferts and jetted HII galaxies always display (although low) signatures of radio-emitting BH activity, with $L_{\rm 1.5\, GHz}\gtrsim$10$^{19.8}$ W Hz$^{-1}$ and $M_{\rm BH}\gtrsim10^{7}$ M$_{\odot}$, on a broad range of Eddington-scaled accretion rates ($\dot{m}$). Radio-quiet and radio-loud LINERs are powered by low-$\dot{m}$ discs launching sub-relativistic and relativistic jets, respectively. Low-power slow jets and disc/corona winds from moderately high to high-$\dot{m}$ discs account for the compact and edge-brightened jets of Seyferts, respectively. Jetted HII galaxies may host weakly active BHs. Fuel-starved BHs and recurrent activity account for ALG properties. [abridged] Comment: Accpeted for publication on MNRAS (27 pages, 9 Figures, 3 Tables, Appendix A) |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1093/mnras/stab2613 |
| الوصول الحر: | http://arxiv.org/abs/2109.06205Test |
| رقم الانضمام: | edsarx.2109.06205 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1093/mnras/stab2613 |
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