LeMMINGs - II. The e-MERLIN legacy survey of nearby galaxies. The deepest radio view of the Palomar sample on parsec scale

R. D. Baldi, D. R. A. Williams, I. M. McHardy, R. J. Beswick, E. Brinks, B. T. Dullo, J. H. Knapen, M. K. Argo, S. Aalto, A. Alberdi, W. A. Baan, G. J. Bendo, S. Corbel, D. M. Fenech, J. S. Gallagher, D. A. Green, R. C. Kennicutt, H. R. Klöckner, E. Körding, T. J. MaccaroneT. W.B. Muxlow, C. G. Mundell, F. Panessa, A. B. Peck, M. A. Pérez-Torres, C. Romero-Cañizales, P. Saikia, F. Shankar, R. E. Spencer, I. R. Stevens, E. Varenius, M. J. Ward, J. Yates, P. Uttley

Research output: Contribution to journalArticlepeer-review

27 Citations (SciVal)


We present the second data release of high-resolution (≤0.2 arcsec) 1.5-GHz radio images of 177 nearby galaxies from the Palomar sample, observed with the e-MERLIN array, as part of the Legacy e-MERLIN Multi-band Imaging of Nearby Galaxies Sample (LeMMINGs) survey. Together with the 103 targets of the first LeMMINGs data release, this represents a complete sample of 280 local active (LINER and Seyfert) and inactive galaxies (H ii galaxies and absorption line galaxies, ALG). This large program is the deepest radio survey of the local Universe, ≳1017.6 W Hz-1, regardless of the host and nuclear type: we detect radio emission ≳0.25 mJy beam-1 for 125/280 galaxies (44.6 per cent) with sizes of typically ≲100 pc. Of those 125, 106 targets show a core which coincides within 1.2 arcsec with the optical nucleus. Although we observed mostly cores, around one third of the detected galaxies features jetted morphologies. The detected radio core luminosities of the sample range between ∼1034 and 1040 erg s-1. LINERs and Seyferts are the most luminous sources, whereas H ii galaxies are the least. LINERs show FR I-like core-brightened radio structures while Seyferts reveal the highest fraction of symmetric morphologies. The majority of H ii galaxies have single radio core or complex extended structures, which probably conceal a nuclear starburst and/or a weak active nucleus (seven of them show clear jets). ALGs, which are typically found in evolved ellipticals, although the least numerous, exhibit on average the most luminous radio structures, similar to LINERs.

Original languageEnglish
Pages (from-to)4749-4767
Number of pages19
JournalMonthly Notices of the Royal Astronomical Society
Issue number4
Early online date17 Nov 2020
Publication statusPublished - 28 Feb 2021

Bibliographical note

Publisher Copyright:
© 2020 The Author(s) Published by Oxford University Press on behalf of Royal Astronomical Society.

Copyright 2021 Elsevier B.V., All rights reserved.


  • galaxies: active
  • galaxies: jet
  • galaxies: nuclei
  • galaxies: star formation
  • radio continuum: galaxies

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science


Dive into the research topics of 'LeMMINGs - II. The e-MERLIN legacy survey of nearby galaxies. The deepest radio view of the Palomar sample on parsec scale'. Together they form a unique fingerprint.

Cite this