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LOFAR MSSS: Discovery of a 2.56 Mpc giant radio galaxy associated with a disturbed galaxy group
- Source :
- Astron.Astrophys., Astron.Astrophys., 2017, 601 (5), pp.A25. ⟨10.1051/0004-6361/201630152⟩, Astronomy and Astrophysics-A&A, Astronomy and Astrophysics-A&A, 2017, 601 (5), pp.A25. ⟨10.1051/0004-6361/201630152⟩, Astron.Astrophys., 2017, 601 (5), pp.A25. 〈10.1051/0004-6361/201630152〉, NASA Astrophysics Data System, Astronomy & astrophysics, 601:A25. EDP Sciences, Astronomy and Astrophysics-A&A, EDP Sciences, 2017, 601 (5), pp.A25. ⟨10.1051/0004-6361/201630152⟩, Clarke, A, Heald, G, Jarrett, T, Bray, J, Hardcastle, M, Cantwell, T, Scaife, A, Brienza, M, Bonafede, A, Breton, R, Broderick, J W, Carbone, D, Croston, J H, Farnes, J S, Harwood, J J, Heesen, V, Horneer, A, van der Horst, A J, Iacobelli, M, Jurusik, W, Kokotanekov, G, McKean, J P, Morabito, L K, Mulcahy, D, Nikiel-Wroczynski, B S, Orru, E, Paladino, R, Pandey-Pommier, M, Pietka, M, Pizzo, R, Pratley, L, Riseley, C, Rottgering, H J A, Rowlinson, A, Sabater, J, Sendlinger, K, Shulevski, A, Sridhar, S, Stewart, A J, Tasse, C, van Velzen, S, van Weeren, R J & Wise, M W 2017, ' LOFAR MSSS: Discovery of a 2.56 Mpc giant radio galaxy associated with a disturbed galaxy group ', Astronomy & Astrophysics, vol. 601 . https://doi.org/10.1051/0004-6361/201630152, Clarke, A O, Heald, G, Jarrett, T, Bray, J D, Hardcastle, M J, Cantwell, T M, Scaife, A M M, Brienza, M, Bonafede, A, Breton, R P, Broderick, J W, Carbone, D, Croston, J H, Farnes, J S, Harwood, J J, Heesen, V, Horneffer, A, van der Horst, A J, Iacobelli, M, Jurusik, W, Kokotanekov, G, McKean, J P, Morabito, L K, Mulcahy, D D, Nikiel-Wroczyñski, B S, Orrú, E, Paladino, R, Pandey-Pommier, M, Pietka, M, Pizzo, R, Pratley, L, Riseley, C J, Rottgering, H J A, Rowlinson, A, Sabater, J, Sendlinger, K, Shulevski, A, Sridhar, S S, Stewart, A J, Tasse, C, van Velzen, S, van Weeren, R J & Wise, M W 2017, ' LOFAR MSSS: Discovery of a 2.56 Mpc giant radio galaxy associated with a disturbed galaxy group ', Astronomy & Astrophysics, vol. 601 . https://doi.org/10.1051/0004-6361/201630152, Astronomy & Astrophysics, 601, 1-9, Astronomy & Astrophysics, 601, May, pp. 1-9, Astronomy & Astrophysics, 601:A25. EDP Sciences
- Publication Year :
- 2017
- Publisher :
- EDP Sciences, 2017.
-
Abstract
- We report on the discovery in the LOFAR Multifrequency Snapshot Sky Survey (MSSS) of a giant radio galaxy (GRG) with a projected size of $2.56 \pm 0.07$ Mpc projected on the sky. It is associated with the galaxy triplet UGC 9555, within which one is identified as a broad-line galaxy in the Sloan Digital Sky Survey (SDSS) at a redshift of $0.05453 \pm 1 \times 10^{-5} $, and with a velocity dispersion of $215.86 \pm 6.34$ km/s. From archival radio observations we see that this galaxy hosts a compact flat-spectrum radio source, and we conclude that it is the active galactic nucleus (AGN) responsible for generating the radio lobes. The radio luminosity distribution of the jets, and the broad-line classification of the host AGN, indicate this GRG is orientated well out of the plane of the sky, making its physical size one of the largest known for any GRG. Analysis of the infrared data suggests that the host is a lenticular type galaxy with a large stellar mass ($\log~\mathrm{M}/\mathrm{M}_\odot = 11.56 \pm 0.12$), and a moderate star formation rate ($1.2 \pm 0.3~\mathrm{M}_\odot/\mathrm{year}$). Spatially smoothing the SDSS images shows the system around UGC 9555 to be significantly disturbed, with a prominent extension to the south-east. Overall, the evidence suggests this host galaxy has undergone one or more recent moderate merger events and is also experiencing tidal interactions with surrounding galaxies, which have caused the star formation and provided the supply of gas to trigger and fuel the Mpc-scale radio lobes.<br />Compressed for arXiv, see journal for full resolution images
- Subjects :
- SELECTION
Active galactic nucleus
Cosmology and Nongalactic Astrophysics (astro-ph.CO)
Stellar mass
Radio galaxy
Astronomy
[ PHYS.ASTR ] Physics [physics]/Astrophysics [astro-ph]
Astrophysics::High Energy Astrophysical Phenomena
UNIVERSE
FOS: Physical sciences
Astrophysics
Astrophysics::Cosmology and Extragalactic Astrophysics
01 natural sciences
galaxies [infrared]
infrared: galaxies
surveys
galaxies: groups: general
Galaxy group
0103 physical sciences
WISE
galaxies: interactions
FIELD
010303 astronomy & astrophysics
Astrophysics::Galaxy Astrophysics
Physics
radio continuum: galaxies
010308 nuclear & particles physics
Star formation
groups: general [galaxies]
interactions [galaxies]
supermassive black holes [quasars]
quasars: supermassive black holes
Velocity dispersion
Astronomy and Astrophysics
LOFAR
ATLAS
Astrophysics - Astrophysics of Galaxies
Galaxy
galaxies [radio continuum]
EVOLUTION
I. SURVEY DESCRIPTION
Space and Planetary Science
Astrophysics of Galaxies (astro-ph.GA)
ALL-SKY SURVEY
SDSS-III
ComputingMethodologies_DOCUMENTANDTEXTPROCESSING
CLUSTERS
[PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph]
Astrophysics - Cosmology and Nongalactic Astrophysics
Subjects
Details
- Language :
- English
- ISSN :
- 00046361 and 14320746
- Database :
- OpenAIRE
- Journal :
- Astron.Astrophys., Astron.Astrophys., 2017, 601 (5), pp.A25. ⟨10.1051/0004-6361/201630152⟩, Astronomy and Astrophysics-A&A, Astronomy and Astrophysics-A&A, 2017, 601 (5), pp.A25. ⟨10.1051/0004-6361/201630152⟩, Astron.Astrophys., 2017, 601 (5), pp.A25. 〈10.1051/0004-6361/201630152〉, NASA Astrophysics Data System, Astronomy & astrophysics, 601:A25. EDP Sciences, Astronomy and Astrophysics-A&A, EDP Sciences, 2017, 601 (5), pp.A25. ⟨10.1051/0004-6361/201630152⟩, Clarke, A, Heald, G, Jarrett, T, Bray, J, Hardcastle, M, Cantwell, T, Scaife, A, Brienza, M, Bonafede, A, Breton, R, Broderick, J W, Carbone, D, Croston, J H, Farnes, J S, Harwood, J J, Heesen, V, Horneer, A, van der Horst, A J, Iacobelli, M, Jurusik, W, Kokotanekov, G, McKean, J P, Morabito, L K, Mulcahy, D, Nikiel-Wroczynski, B S, Orru, E, Paladino, R, Pandey-Pommier, M, Pietka, M, Pizzo, R, Pratley, L, Riseley, C, Rottgering, H J A, Rowlinson, A, Sabater, J, Sendlinger, K, Shulevski, A, Sridhar, S, Stewart, A J, Tasse, C, van Velzen, S, van Weeren, R J & Wise, M W 2017, ' LOFAR MSSS: Discovery of a 2.56 Mpc giant radio galaxy associated with a disturbed galaxy group ', Astronomy & Astrophysics, vol. 601 . https://doi.org/10.1051/0004-6361/201630152, Clarke, A O, Heald, G, Jarrett, T, Bray, J D, Hardcastle, M J, Cantwell, T M, Scaife, A M M, Brienza, M, Bonafede, A, Breton, R P, Broderick, J W, Carbone, D, Croston, J H, Farnes, J S, Harwood, J J, Heesen, V, Horneffer, A, van der Horst, A J, Iacobelli, M, Jurusik, W, Kokotanekov, G, McKean, J P, Morabito, L K, Mulcahy, D D, Nikiel-Wroczyñski, B S, Orrú, E, Paladino, R, Pandey-Pommier, M, Pietka, M, Pizzo, R, Pratley, L, Riseley, C J, Rottgering, H J A, Rowlinson, A, Sabater, J, Sendlinger, K, Shulevski, A, Sridhar, S S, Stewart, A J, Tasse, C, van Velzen, S, van Weeren, R J & Wise, M W 2017, ' LOFAR MSSS: Discovery of a 2.56 Mpc giant radio galaxy associated with a disturbed galaxy group ', Astronomy & Astrophysics, vol. 601 . https://doi.org/10.1051/0004-6361/201630152, Astronomy & Astrophysics, 601, 1-9, Astronomy & Astrophysics, 601, May, pp. 1-9, Astronomy & Astrophysics, 601:A25. EDP Sciences
- Accession number :
- edsair.doi.dedup.....14a1622239a0c489b5d4eeb941d7d463