RT Journal Article
T1 LeMMINGs – I. The eMERLIN legacy survey of nearby galaxies. 1.5-GHz parsec-scale radio structures and cores
A1 Dullo, Bililign
A1 Baldi, R.D.
A1 Westcott, J...
A1 otros, ...
AB We present the first data release of high-resolution (≤0.2 arcsec) 1.5-GHz radio images of 103 nearby galaxies from the Palomar sample, observed with the eMERLIN array, as part of the LeMMINGs survey. This sample includes galaxies which are active (low-ionization nuclear emission-line regions [LINER] and Seyfert) and quiescent (H II galaxies and absorption line galaxies, ALGs), which are reclassified based upon revised emission-line diagrams. We detect radio emission ≳0.2 mJy for 47/103 galaxies (22/34 for LINERS, 4/4 for Seyferts, 16/51 for H II galaxies, and 5/14 for ALGs) with radio sizes typically of ≲100 pc. We identify the radio core position within the radio structures for 41 sources. Half of the sample shows jetted morphologies. The remaining half shows single radio cores or complex morphologies. LINERs show radio structures more core-brightened than Seyferts. Radio luminosities of the sample range from 1032 to 1040 erg s−1: LINERs and H II galaxies show the highest and lowest radio powers, respectively, while ALGs and Seyferts have intermediate luminosities. We find that radio core luminosities correlate with black hole (BH) mass down to ∼107 M⊙, but a break emerges at lower masses. Using [O III] line luminosity as a proxy for the accretion luminosity, active nuclei and jetted H II galaxies follow an optical Fundamental Plane of BH activity, suggesting a common disc–jet relationship. In conclusion, LINER nuclei are the scaled-down version of FR I radio galaxies; Seyferts show less collimated jets; H II galaxies may host weak active BHs and/or nuclear star-forming cores; and recurrent BH activity may account for ALG properties.
PB Oxford University Press
SN 0035-8711
YR 2018
FD 2018-02-09
LK https://hdl.handle.net/20.500.14352/88345
UL https://hdl.handle.net/20.500.14352/88345
LA eng
NO Baldi, R. D., Williams, D. R., McHardy, I. M., Beswick, R. J., Argo, M. K., Dullo, B. T., ... & Westcott, J. (2018). LeMMINGs–I. The eMERLIN legacy survey of nearby galaxies. 1.5-GHz parsec-scale radio structures and cores. Monthly Notices of the Royal Astronomical Society, 476(3), 3478-3522.
NO Artículo escrito por 32 autores
NO UK Research & Innovation
NO Science & Technology Facilities Council
NO Royal Society
NO University of Southampton
NO European Union
NO Gobierno de España
NO Ministerio de Economía y Competitividad
NO Spanish postdoctoral fellowship 'Ayudas para la atraccion del talento investigador. Modalidad 2: jovenes investigadores, financiadas por la Comunidad de Madrid'
DS Docta Complutense
RD 9 abr 2025