Radio continuum observations of the Leo Triplet at 2.64 GHz

2013
journal article
article
9
cris.lastimport.wos2024-04-10T00:58:20Z
dc.abstract.enContext. 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.affiliationWydział Fizyki, Astronomii i Informatyki Stosowanej : Instytut – Obserwatorium Astronomicznepl
dc.contributor.authorNikiel-Wroczyński, Błażej - 110571 pl
dc.contributor.authorSoida, Marian - 100044 pl
dc.contributor.authorUrbanik, Marek - 132483 pl
dc.contributor.authorWeżgowiec, Marek - 253977 pl
dc.contributor.authorBeck, R.pl
dc.contributor.authorBomans, D. J.pl
dc.contributor.authorAdebahr, B.pl
dc.date.accessioned2015-06-25T13:27:38Z
dc.date.available2015-06-25T13:27:38Z
dc.date.issued2013pl
dc.date.openaccess12
dc.description.accesstimepo opublikowaniu
dc.description.additionalNumer artykułu: A4. Reproduced with permission from Astronomy & Astrophysics, © ESOpl
dc.description.admin[AB] Nikiel-Wroczyński, Błażejpl
dc.description.admin[AU] Weżgowiec, Marek [SAP13905507]pl
dc.description.versionostateczna wersja wydawcy
dc.description.volume553pl
dc.identifier.articleidA4pl
dc.identifier.doi10.1051/0004-6361/201321089pl
dc.identifier.eissn1432-0746pl
dc.identifier.issn0004-6361pl
dc.identifier.projectROD UJ / Ppl
dc.identifier.urihttp://ruj.uj.edu.pl/xmlui/handle/item/10378
dc.languageengpl
dc.language.containerengpl
dc.rightsUdzielam licencji. Uznanie autorstwa - Użycie niekomercyjne - Na tych samych warunkach 4.0 Międzynarodowa*
dc.rights.licenceOTHER
dc.rights.urihttp://creativecommons.org/licenses/by-nc-sa/4.0/legalcode.pl*
dc.share.typeotwarte czasopismo
dc.subject.engalaxies: groups: individual: Leo Tripletpl
dc.subject.engalaxies: interactionspl
dc.subject.enintergalactic mediumpl
dc.subject.engalaxies: magnetic fieldspl
dc.subject.enradio continuum: galaxiespl
dc.subject.enpolarizationpl
dc.subtypeArticlepl
dc.titleRadio continuum observations of the Leo Triplet at 2.64 GHzpl
dc.title.journalAstronomy & Astrophysicspl
dc.typeJournalArticlepl
dspace.entity.typePublication
cris.lastimport.wos
2024-04-10T00:58:20Z
dc.abstract.enpl
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.
dc.affiliationpl
Wydział Fizyki, Astronomii i Informatyki Stosowanej : Instytut – Obserwatorium Astronomiczne
dc.contributor.authorpl
Nikiel-Wroczyński, Błażej - 110571
dc.contributor.authorpl
Soida, Marian - 100044
dc.contributor.authorpl
Urbanik, Marek - 132483
dc.contributor.authorpl
Weżgowiec, Marek - 253977
dc.contributor.authorpl
Beck, R.
dc.contributor.authorpl
Bomans, D. J.
dc.contributor.authorpl
Adebahr, B.
dc.date.accessioned
2015-06-25T13:27:38Z
dc.date.available
2015-06-25T13:27:38Z
dc.date.issuedpl
2013
dc.date.openaccess
12
dc.description.accesstime
po opublikowaniu
dc.description.additionalpl
Numer artykułu: A4. Reproduced with permission from Astronomy & Astrophysics, © ESO
dc.description.adminpl
[AB] Nikiel-Wroczyński, Błażej
dc.description.adminpl
[AU] Weżgowiec, Marek [SAP13905507]
dc.description.version
ostateczna wersja wydawcy
dc.description.volumepl
553
dc.identifier.articleidpl
A4
dc.identifier.doipl
10.1051/0004-6361/201321089
dc.identifier.eissnpl
1432-0746
dc.identifier.issnpl
0004-6361
dc.identifier.projectpl
ROD UJ / P
dc.identifier.uri
http://ruj.uj.edu.pl/xmlui/handle/item/10378
dc.languagepl
eng
dc.language.containerpl
eng
dc.rights*
Udzielam licencji. Uznanie autorstwa - Użycie niekomercyjne - Na tych samych warunkach 4.0 Międzynarodowa
dc.rights.licence
OTHER
dc.rights.uri*
http://creativecommons.org/licenses/by-nc-sa/4.0/legalcode.pl
dc.share.type
otwarte czasopismo
dc.subject.enpl
galaxies: groups: individual: Leo Triplet
dc.subject.enpl
galaxies: interactions
dc.subject.enpl
intergalactic medium
dc.subject.enpl
galaxies: magnetic fields
dc.subject.enpl
radio continuum: galaxies
dc.subject.enpl
polarization
dc.subtypepl
Article
dc.titlepl
Radio continuum observations of the Leo Triplet at 2.64 GHz
dc.title.journalpl
Astronomy & Astrophysics
dc.typepl
JournalArticle
dspace.entity.type
Publication
Affiliations

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