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Radio continuum observations of the Leo Triplet at 2.64 GHz

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Radio continuum observations of the Leo Triplet at 2.64 GHz

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dc.contributor.author Nikiel-Wroczyński, Błażej [SAP14004023] pl
dc.contributor.author Soida, Marian [SAP11014010] pl
dc.contributor.author Urbanik, Marek [SAP11005004] pl
dc.contributor.author Weżgowiec, Marek [SAP13905507] pl
dc.contributor.author Beck, R. pl
dc.contributor.author Bomans, D. J. pl
dc.contributor.author Adebahr, B. pl
dc.date.accessioned 2015-06-25T13:27:38Z
dc.date.available 2015-06-25T13:27:38Z
dc.date.issued 2013 pl
dc.identifier.issn 0004-6361 pl
dc.identifier.uri http://ruj.uj.edu.pl/xmlui/handle/item/10378
dc.language eng pl
dc.rights Udzielam licencji. Uznanie autorstwa - Użycie niekomercyjne - Na tych samych warunkach 4.0 Międzynarodowa *
dc.rights.uri http://creativecommons.org/licenses/by-nc-sa/4.0/pl/legalcode *
dc.title Radio continuum observations of the Leo Triplet at 2.64 GHz pl
dc.type JournalArticle pl
dc.description.additional Numer artykułu: A4. Reproduced with permission from Astronomy & Astrophysics, © ESO pl
dc.abstract.en Context. The Leo Triplet group of galaxies is best known for the impressive bridges of neutral gas that connect its members. One of the bridges forms a large tidal tail extending eastwards from NGC 3628 that hosts several H   i plumes and carries the material from this galaxy to the intergalactic space. Aims. The magnetic fields of the member galaxies NGC 3628 and NGC 3627 show morphological peculiarities, suggesting that interactions within the group may be caused by stripping of the magnetic field. This process could supply the intergalactic space with magnetised material, a scenario considered as a possible source of intergalactic magnetic fields (as seen eg. in the "Taffy" pairs of galaxies). Additionally, the plumes are likely to be the tidal dwarf galaxy candidates. Methods. We performed radio continuum mapping observations at 2.64 GHz using the 100-m Effelsberg radio telescope. We obtained total power and polarised intensity maps of the Triplet. These maps were analysed together with the archive data, and the magnetic field strength (as well as the magnetic energy density) was estimated. Results. Extended emission was not detected either in the total power or the polarised intensity maps. We obtained upper limits of the magnetic field strength and the energy density of the magnetic field in the Triplet. We detected emission from the easternmost clump and determined the strength of its magnetic field. In addition, we measured integrated fluxes of the member galaxies at 2.64 GHz and estimated their total magnetic field strengths. Conclusions. We found that the tidal tail hosts a tidal dwarf galaxy candidate that possesses a detectable magnetic field with a non-zero ordered component. Extended radio continuum emission, if present, is weaker than the reached confusion limit. The total magnetic field strength does not exceed 2.8 $\mu$G and the ordered component is lower than 1.6 $\mu$G. pl
dc.subject.en galaxies: groups: individual: Leo Triplet pl
dc.subject.en galaxies: interactions pl
dc.subject.en intergalactic medium pl
dc.subject.en galaxies: magnetic fields pl
dc.subject.en radio continuum: galaxies pl
dc.subject.en polarization pl
dc.description.volume 553 pl
dc.identifier.doi 10.1051/0004-6361/201321089 pl
dc.identifier.eissn 1432-0746 pl
dc.title.journal Astronomy & Astrophysics pl
dc.language.container eng pl
dc.affiliation Wydział Fizyki, Astronomii i Informatyki Stosowanej : Instytut – Obserwatorium Astronomiczne pl
dc.subtype Article pl
dc.identifier.articleid A4 pl
dc.rights.original OTHER; otwarte czasopismo; ostateczna wersja wydawcy; po opublikowaniu; 12 pl
dc.identifier.project ROD UJ / P pl
.pointsMNiSW [2013 A]: 35


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Udzielam licencji. Uznanie autorstwa - Użycie niekomercyjne - Na tych samych warunkach 4.0 Międzynarodowa Except where otherwise noted, this item's license is described as Udzielam licencji. Uznanie autorstwa - Użycie niekomercyjne - Na tych samych warunkach 4.0 Międzynarodowa