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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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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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| dc.contributor.author | Baldi, R. D. | |
| dc.contributor.author | Martí Vidal, Iván | |
| dc.date.accessioned | 2022-05-25T12:48:40Z | |
| dc.date.available | 2022-05-25T12:48:40Z | |
| dc.date.issued | 2021 | |
| dc.identifier.citation | Baldi, R. D. Martí Vidal, Iván 2021 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 Monthly Notices of the Royal Astronomical Society 508 2 2019 2038 | |
| dc.identifier.uri | https://hdl.handle.net/10550/82976 | |
| dc.description.abstract | What determines the nuclear radio emission in local galaxies? To address this question, 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 [H II and absorption line galaxies (ALGs)] galaxies. Using [O III] luminosity (L[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 (Lcore) is found to scale with BH mass (Mbh) and [O III] luminosity. Below Mbh ~ 10^(6.5) Msun, stellar processes from non-jetted H II galaxies dominate with Lcore \propto Mbh^(0.62\pm0.33) and Lcore \propto L[O III]^(0.79\pm0.30). Above Mbh ~ 10^(6.5) Msun, accretion-driven processes dominate with Lcore \propto Mbh^(1.5-1.65) and Lcore \propto L[O III]^(0.99-1.31) for active galaxies: radio-quiet/loud LINERs, Seyferts, and jetted H II galaxies always display (although low) signatures of radio-emitting BH activity, with L1.5GHz > 10^(19.8) W Hz^(-1) and Mbh > 10^7 Msun, on a broad range of Eddington-scaled accretion rates (mdot). Radio-quiet and radio-loud LINERs are powered by low-mdot discs launching sub-relativistic and relativistic jets, respectively. Low-power slow jets and disc/corona winds from moderately high to high-mdot discs account for the compact and edge-brightened jets of Seyferts, respectively. Jetted H II galaxies may host weakly active BHs. Fuel-starved BHs and recurrent activity account for ALG properties. In conclusion, specific accretion-ejection states of active BHs determine the radio production and the optical classification of local active galaxies. | |
| dc.language.iso | eng | |
| dc.relation.ispartof | Monthly Notices of the Royal Astronomical Society, 2021, vol. 508, num. 2, p. 2019-2038 | |
| dc.subject | Astronomia Observacions | |
| dc.title | 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 | |
| dc.type | journal article | es_ES |
| dc.date.updated | 2022-05-25T12:48:40Z | |
| dc.identifier.doi | 10.1093/mnras/stab2613 | |
| dc.identifier.idgrec | 153672 | |
| dc.rights.accessRights | open access | es_ES |
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