English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

We present the first data release of high-resolution ($\leq0.2$ arcsec)1.5-GHz radio images of 103 nearby galaxies from the Palomar sample, observedwith the eMERLIN array, as part of the LeMMINGs survey. This sample includesgalaxies which are active (LINER and Seyfert) and quiescent (HII galaxies andAbsorption line galaxies, ALG), which are reclassified based upon revisedemission-line diagrams. We detect radio emission $\gtrsim$ 0.2 mJy for 47/103galaxies (22/34 for LINERS, 4/4 for Seyferts, 16/51 for HII galaxies and 5/14for ALGs) with radio sizes typically of $\lesssim$100 pc. We identify the radiocore position within the radio structures for 41 sources. Half of the sampleshows jetted morphologies. The remaining half shows single radio cores orcomplex morphologies. LINERs show radio structures more core-brightened thanSeyferts. Radio luminosities of the sample range from 10$^{32}$ to 10$^{40}$erg s$^{-1}$: LINERs and HII galaxies show the highest and the lowest radiopowers respectively, while ALGs and Seyferts have intermediate luminosities. Wefind that radio core luminosities correlate with black hole (BH) mass down to$\sim$10$^{7}$ M$_{\odot}$, but a break emerges at lower masses. Using [O III]line luminosity as a proxy for the accretion luminosity, active nuclei andjetted HII galaxies follow an optical fundamental plane of BH activity,suggesting a common disc-jet relationship. In conclusion, LINER nuclei are thescaled-down version of FR I radio galaxies; Seyferts show less collimated jets;HII galaxies may host weak active BHs and/or nuclear star-forming cores; andrecurrent BH activity may account for ALG properties.

LeMMINGs. I. The eMERLIN legacy survey of nearby galaxies. 1.5-GHz parsec-scale radio structures and cores