The University of Southampton
University of Southampton Institutional Repository

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

LeMMINGs. I. The eMERLIN legacy survey of nearby galaxies. 1.5-GHz parsec-scale radio structures and cores
LeMMINGs. I. The eMERLIN legacy survey of nearby galaxies. 1.5-GHz parsec-scale radio structures and cores
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, observed with the eMERLIN array, as part of the LeMMINGs survey. This sample includes galaxies which are active (LINER and Seyfert) and quiescent (HII galaxies and Absorption line galaxies, ALG), which are reclassified based upon revised emission-line diagrams. We detect radio emission $\gtrsim$ 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 $\lesssim$100 pc. We identify the radio core position within the radio structures for 41 sources. Half of the sample shows jetted morphologies. The remaining half shows single radio cores or complex morphologies. LINERs show radio structures more core-brightened than Seyferts. Radio luminosities of the sample range from 10$^{32}$ to 10$^{40}$ erg s$^{-1}$: LINERs and HII galaxies show the highest and the 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 $\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 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.
Astrophysics - Astrophysics of Galaxies, Astrophysics - High Energy Astrophysical Phenomena
0035-8711
3478-3522
Baldi, R.D.
c416ed4c-5d1c-48ee-989c-3a8ab38cd124
Williams, D.R.A.
c9ded967-198f-4c26-96b1-8c03d7d26445
McHardy, I.M.
4f215137-9cc4-4a08-982e-772a0b24c17e
Beswick, R.J.
c52c991a-7404-4b9c-b651-b919a8d02c04
Argo, M.K.
f4fd7615-6b60-44f4-97aa-993c91e56a9b
Dullo, B.T.
61d90d7d-eefa-4bf5-9361-3cbc1f91a412
Knapen, J.H.
e7240261-f2a3-4ea6-9613-3563b6387f67
Brinks, E.
dc3a58aa-c50c-4538-88a1-baf2aa8301d2
Muxlow, T.W.B.
72c8c206-cfe8-425c-9f9c-256dbf2f56c1
Aalto, S.
d8540069-66e7-4ecd-9143-b09ef58ff747
Alberdi, A.
f7685efd-1b4f-4d28-a50f-a955c9b99ef1
Bendo, G.J.
0522f666-02d6-4f41-879b-fc9ea8c7cda0
Corbel, S.
b31cdd54-9e1c-4bfa-ac85-f98c627ff455
Evans, R.
9e82cb7e-3fc3-4975-bc68-f51393b48957
Fenech, D.M.
3b633567-2827-4698-a086-d93457039a79
Green, D.A.
0d7d86c4-d674-4514-8aa6-259134dc7b57
Klöckner, H.-R.
e97b12bf-8912-431d-ae3b-5888f1a35a5f
Körding, E.
2fb1638c-4392-4acc-83ea-78e0eb9c078b
Kharb, P.
3c137335-5e0e-40f4-b09b-cb330656d98a
Maccarone, T.J.
c2f1d87b-e2ef-4e33-b09f-a2861d917ea8
Martí-Vidal, I.
7e52d22a-4c84-4514-87c7-6949c927e27b
Mundell, C.G.
85010fd4-87bd-4fdc-b1ad-35a8fdd05c47
Panessa, F.
ea57d0af-2ad5-4f65-a8f7-b001e70ebe13
Peck, A.B.
ba5cc8a1-394a-44f1-a3e2-9a5b76c14c7f
Pérez-Torres, M.A.
e7b42f8b-33a2-47bb-94b5-cad7d50a1177
Saikia, D.J.
5b95958d-8b6c-4c82-b34b-9b3b67a35d32
Saikia, P.
dc2a7bcb-0d6c-492f-9cf9-2624a23476a4
Shankar, F.
b10c91e4-85cd-4394-a18a-d4f049fd9cdb
Spencer, R.E.
db5b6e4f-d104-4118-a8dc-652ee1a7a713
Stevens, I.R.
d753d617-a472-4c61-8a35-07e1eca68f4d
Uttley, P.
db770bd7-d97e-43f5-99d4-a585bccd352a
Westcott, J.
4ac23629-2401-48c0-8c76-03b81a590c95
Baldi, R.D.
c416ed4c-5d1c-48ee-989c-3a8ab38cd124
Williams, D.R.A.
c9ded967-198f-4c26-96b1-8c03d7d26445
McHardy, I.M.
4f215137-9cc4-4a08-982e-772a0b24c17e
Beswick, R.J.
c52c991a-7404-4b9c-b651-b919a8d02c04
Argo, M.K.
f4fd7615-6b60-44f4-97aa-993c91e56a9b
Dullo, B.T.
61d90d7d-eefa-4bf5-9361-3cbc1f91a412
Knapen, J.H.
e7240261-f2a3-4ea6-9613-3563b6387f67
Brinks, E.
dc3a58aa-c50c-4538-88a1-baf2aa8301d2
Muxlow, T.W.B.
72c8c206-cfe8-425c-9f9c-256dbf2f56c1
Aalto, S.
d8540069-66e7-4ecd-9143-b09ef58ff747
Alberdi, A.
f7685efd-1b4f-4d28-a50f-a955c9b99ef1
Bendo, G.J.
0522f666-02d6-4f41-879b-fc9ea8c7cda0
Corbel, S.
b31cdd54-9e1c-4bfa-ac85-f98c627ff455
Evans, R.
9e82cb7e-3fc3-4975-bc68-f51393b48957
Fenech, D.M.
3b633567-2827-4698-a086-d93457039a79
Green, D.A.
0d7d86c4-d674-4514-8aa6-259134dc7b57
Klöckner, H.-R.
e97b12bf-8912-431d-ae3b-5888f1a35a5f
Körding, E.
2fb1638c-4392-4acc-83ea-78e0eb9c078b
Kharb, P.
3c137335-5e0e-40f4-b09b-cb330656d98a
Maccarone, T.J.
c2f1d87b-e2ef-4e33-b09f-a2861d917ea8
Martí-Vidal, I.
7e52d22a-4c84-4514-87c7-6949c927e27b
Mundell, C.G.
85010fd4-87bd-4fdc-b1ad-35a8fdd05c47
Panessa, F.
ea57d0af-2ad5-4f65-a8f7-b001e70ebe13
Peck, A.B.
ba5cc8a1-394a-44f1-a3e2-9a5b76c14c7f
Pérez-Torres, M.A.
e7b42f8b-33a2-47bb-94b5-cad7d50a1177
Saikia, D.J.
5b95958d-8b6c-4c82-b34b-9b3b67a35d32
Saikia, P.
dc2a7bcb-0d6c-492f-9cf9-2624a23476a4
Shankar, F.
b10c91e4-85cd-4394-a18a-d4f049fd9cdb
Spencer, R.E.
db5b6e4f-d104-4118-a8dc-652ee1a7a713
Stevens, I.R.
d753d617-a472-4c61-8a35-07e1eca68f4d
Uttley, P.
db770bd7-d97e-43f5-99d4-a585bccd352a
Westcott, J.
4ac23629-2401-48c0-8c76-03b81a590c95

Baldi, R.D., Williams, D.R.A., McHardy, I.M., Beswick, R.J., Argo, M.K., Dullo, B.T., Knapen, J.H., Brinks, E., Muxlow, T.W.B., Aalto, S., Alberdi, A., Bendo, G.J., Corbel, S., Evans, R., Fenech, D.M., Green, D.A., Klöckner, H.-R., Körding, E., Kharb, P., Maccarone, T.J., Martí-Vidal, I., Mundell, C.G., Panessa, F., Peck, A.B., Pérez-Torres, M.A., Saikia, D.J., Saikia, P., Shankar, F., Spencer, R.E., Stevens, I.R., Uttley, P. and 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.

Record type: Article

Abstract

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, observed with the eMERLIN array, as part of the LeMMINGs survey. This sample includes galaxies which are active (LINER and Seyfert) and quiescent (HII galaxies and Absorption line galaxies, ALG), which are reclassified based upon revised emission-line diagrams. We detect radio emission $\gtrsim$ 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 $\lesssim$100 pc. We identify the radio core position within the radio structures for 41 sources. Half of the sample shows jetted morphologies. The remaining half shows single radio cores or complex morphologies. LINERs show radio structures more core-brightened than Seyferts. Radio luminosities of the sample range from 10$^{32}$ to 10$^{40}$ erg s$^{-1}$: LINERs and HII galaxies show the highest and the 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 $\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 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.

Full text not available from this repository.

More information

Accepted/In Press date: 2 February 2018
e-pub ahead of print date: 9 February 2018
Published date: May 2018
Keywords: Astrophysics - Astrophysics of Galaxies, Astrophysics - High Energy Astrophysical Phenomena

Identifiers

Local EPrints ID: 417997
URI: https://eprints.soton.ac.uk/id/eprint/417997
ISSN: 0035-8711
PURE UUID: 76c5efca-5b9a-469d-8376-b59076c10495
ORCID for D.R.A. Williams: ORCID iD orcid.org/0000-0001-7361-0246

Catalogue record

Date deposited: 20 Feb 2018 17:30
Last modified: 06 Jun 2018 12:18

Export record

Contributors

Author: R.D. Baldi
Author: D.R.A. Williams ORCID iD
Author: I.M. McHardy
Author: R.J. Beswick
Author: M.K. Argo
Author: B.T. Dullo
Author: J.H. Knapen
Author: E. Brinks
Author: T.W.B. Muxlow
Author: S. Aalto
Author: A. Alberdi
Author: G.J. Bendo
Author: S. Corbel
Author: R. Evans
Author: D.M. Fenech
Author: D.A. Green
Author: H.-R. Klöckner
Author: E. Körding
Author: P. Kharb
Author: T.J. Maccarone
Author: I. Martí-Vidal
Author: C.G. Mundell
Author: F. Panessa
Author: A.B. Peck
Author: M.A. Pérez-Torres
Author: D.J. Saikia
Author: P. Saikia
Author: F. Shankar
Author: R.E. Spencer
Author: I.R. Stevens
Author: P. Uttley
Author: J. Westcott

University divisions

Download statistics

Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.

View more statistics

Atom RSS 1.0 RSS 2.0

Contact ePrints Soton: eprints@soton.ac.uk

ePrints Soton supports OAI 2.0 with a base URL of https://eprints.soton.ac.uk/cgi/oai2

This repository has been built using EPrints software, developed at the University of Southampton, but available to everyone to use.

We use cookies to ensure that we give you the best experience on our website. If you continue without changing your settings, we will assume that you are happy to receive cookies on the University of Southampton website.

×