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LeMMINGs - I. The e...
LeMMINGs - I. The eMERLIN legacy survey of nearby galaxies. 1.5-GHz parsec-scale radio structures and cores
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- Baldi, R. D. (author)
- University of Southampton
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- Williams, D. R.A. (author)
- University of Southampton
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- McHardy, I. M. (author)
- University of Southampton
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- Beswick, R. J. (author)
- University of Manchester
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- Argo, M. K. (author)
- University of Central Lancashire,University of Manchester
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- Dullo, B. T. (author)
- Universidad Complutense de Madrid,Complutense University
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- Knapen, J. H. (author)
- Instituto de Astrofísica de Canarias,Universidad de la Laguna,University of La Laguna
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- Brinks, E. (author)
- University of Hertfordshire
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- Muxlow, T. (author)
- University of Manchester
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- Aalto, Susanne, 1964 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Alberdi, Antxon (author)
- Instituto de Astrofisica de Andalucía (IAA),Institute of Astrophysics of Andalusia (IAA)
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- Bendo, G. J. (author)
- University of Manchester
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- Corbel, S. (author)
- Institut de Recherche sur les Lois Fondamentales de l'Univers,Station de Radioastronomie de Nançay
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- Evans, R. (author)
- Cardiff University
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- Fenech, D. M. (author)
- University College London (UCL)
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- Green, D. A. (author)
- University Of Cambridge
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- Klockner, H. R. (author)
- Max Planck Gesellschaft zur Förderung der Wissenschaften e.V. (MPG),Max Planck Society for the Advancement of Science (MPG)
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- Körding, E. (author)
- Radboud Universiteit,Radboud University
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- Kharb, P. (author)
- National Centre for Radio Astrophysics India
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- Maccarone, T. J. (author)
- Texas Tech University at Lubbock
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- Marti-Vidal, Ivan, 1980 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Mundell, C. G. (author)
- University of Bath
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- Panessa, F. (author)
- Istituto nazionale di astrofisica (INAF)
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- Peck, A. B. (author)
- Gemini Observatory North
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- Pérez-Torres, M.A. (author)
- Instituto de Astrofisica de Andalucía (IAA),Institute of Astrophysics of Andalusia (IAA)
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- Saikia, D. J. (author)
- National Centre for Radio Astrophysics India
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- Saikia, P. (author)
- Radboud Universiteit,Radboud University,New York University Abu Dhabi
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- Shankar, F. (author)
- University of Southampton
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- Spencer, R. E. (author)
- University of Manchester
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- Stevens, I. R. (author)
- University of Birmingham
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- Uttley, P. (author)
- Universiteit Van Amsterdam,University of Amsterdam
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- Westcott, J. (author)
- University of Hertfordshire
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(creator_code:org_t)
- 2018
- 2018
- English.
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In: Monthly Notices of the Royal Astronomical Society. - 0035-8711 .- 1365-2966. ; 476:3, s. 3478-3522
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https://research.cha...
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https://doi.org/10.1...
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Abstract
Subject headings
Close
- 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 HII 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 1032to 1040erg s-1: LINERs and HII 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 ~107M⊙, but a break emerges at lower masses. Using [OIII] line luminosity as a proxy for the accretion luminosity, active nuclei and jetted HII 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; HII galaxies may host weak active BHs and/or nuclear star-forming cores; and recurrent BH activity may account for ALG properties.
Subject headings
- NATURVETENSKAP -- Fysik -- Subatomär fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Subatomic Physics (hsv//eng)
- NATURVETENSKAP -- Fysik -- Astronomi, astrofysik och kosmologi (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Astronomy, Astrophysics and Cosmology (hsv//eng)
- NATURVETENSKAP -- Fysik -- Atom- och molekylfysik och optik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Atom and Molecular Physics and Optics (hsv//eng)
Keyword
- Galaxies: jet
- Galaxies: active
- Galaxies: star formation
- Galaxies: nuclei
- Radio continuum: galaxies
Publication and Content Type
- art (subject category)
- ref (subject category)
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To the university's database
- By the author/editor
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Baldi, R. D.
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Williams, D. R.A ...
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McHardy, I. M.
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Beswick, R. J.
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Argo, M. K.
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Dullo, B. T.
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show more...
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Knapen, J. H.
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Brinks, E.
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Muxlow, T.
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Aalto, Susanne, ...
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Alberdi, Antxon
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Bendo, G. J.
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Corbel, S.
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Evans, R.
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Fenech, D. M.
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Green, D. A.
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Klockner, H. R.
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Körding, E.
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Kharb, P.
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Maccarone, T. J.
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Marti-Vidal, Iva ...
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Mundell, C. G.
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Panessa, F.
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Peck, A. B.
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Pérez-Torres, M. ...
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Saikia, D. J.
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Saikia, P.
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Shankar, F.
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Spencer, R. E.
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Stevens, I. R.
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Uttley, P.
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Westcott, J.
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show less...
- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Physical Science ...
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and Subatomic Physic ...
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Physical Science ...
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and Astronomy Astrop ...
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Physical Science ...
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and Atom and Molecul ...
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Monthly Notices ...
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Chalmers University of Technology