LOFAR MSSS: Discovery of a 2.56 Mpc giant radio galaxy associated with a disturbed galaxy group
| Autor: | Michael W. Wise, Leah K. Morabito, Jeremy J. Harwood, D. Carbone, Emanuela Orru, T. M. Cantwell, Judith H. Croston, Marisa Brienza, G. Kokotanekov, Rosita Paladino, George Heald, D. D. Mulcahy, A. O. Clarke, Annalisa Bonafede, A. Horneffer, Luke Pratley, Huub Röttgering, Martin J. Hardcastle, Adam Stewart, S. S. Sridhar, Cyril Tasse, Marco Iacobelli, R. Pizzo, J. W. Broderick, Jamie Farnes, A. J. van der Horst, K. Sendlinger, Anna M. M. Scaife, Rene P. Breton, J. Sabater, Volker Heesen, Thomas H. Jarrett, W. Jurusik, M. Pietka, Justin D. Bray, S. van Velzen, Błażej Nikiel-Wroczyński, John McKean, M. Pandey-Pommier, Antonia Rowlinson, R. J. van Weeren, C. J. Riseley, Aleksandar Shulevski |
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| Přispěvatelé: | Centre de Recherche Astrophysique de Lyon (CRAL), École normale supérieure - Lyon (ENS Lyon)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), Galaxies, Etoiles, Physique, Instrumentation (GEPI), Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, PSL Research University (PSL)-PSL Research University (PSL)-Centre National de la Recherche Scientifique (CNRS), École normale supérieure de Lyon (ENS de Lyon)-Université Claude Bernard Lyon 1 (UCBL), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Centre de Recherche Astrophysique de Lyon ( CRAL ), École normale supérieure - Lyon ( ENS Lyon ) -Université Claude Bernard Lyon 1 ( UCBL ), Université de Lyon-Université de Lyon-Institut national des sciences de l'Univers ( INSU - CNRS ) -Centre National de la Recherche Scientifique ( CNRS ), Galaxies, Etoiles, Physique, Instrumentation ( GEPI ), Institut national des sciences de l'Univers ( INSU - CNRS ) -Observatoire de Paris-Université Paris Diderot - Paris 7 ( UPD7 ) -Centre National de la Recherche Scientifique ( CNRS ), Astronomy, Kapteyn Astronomical Institute, Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS), High Energy Astrophys. & Astropart. Phys (API, FNWI) |
| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
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 |
| Zdroj: | 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 |
| ISSN: | 0004-6361 1432-0746 |
| Popis: | 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. Compressed for arXiv, see journal for full resolution images |
| Databáze: | OpenAIRE |
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