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Discovery of a tidal dwarf galaxy in the Leo Triplet


Discovery of a tidal dwarf galaxy in the Leo Triplet

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dc.contributor.author Nikiel-Wroczyński, Błażej [SAP14004023] pl
dc.contributor.author Soida, Marian [SAP11014010] pl
dc.contributor.author Bomans, Dominik J. pl
dc.contributor.author Urbanik, Marek [SAP11005004] pl
dc.date.accessioned 2015-03-11T10:35:45Z
dc.date.available 2015-03-11T10:35:45Z
dc.date.issued 2014 pl
dc.identifier.issn 0004-637X pl
dc.identifier.uri http://ruj.uj.edu.pl/xmlui/handle/item/3698
dc.language eng pl
dc.title Discovery of a tidal dwarf galaxy in the Leo Triplet pl
dc.type JournalArticle pl
dc.abstract.en We report the discovery of a dwarf galaxy in the Leo Triplet. Analysis of the neutral hydrogen distribution shows that it rotates independently of the tidal tail of NGC 3628, with a radial velocity gradient of 35-40 km s^{-1} over approximately 13 kpc. The galaxy has an extremely high neutral gas content, accounting for a large amount of its total dynamic mass and suggesting a low amount of dark matter. It is located at the tip of the gaseous tail, which strongly suggests a tidal origin. If this is the case, it would be one of the most confident and nearest (to the Milky Way) detections of a tidal dwarf galaxy and, at the same time, the object most detached from its parent galaxy (≈ 140 kpc) of this type. pl
dc.subject.en galaxies: groups: individual (Arp 317, Leo Triplet) pl
dc.subject.en galaxies: interactions pl
dc.subject.en intergalactic medium pl
dc.description.volume 786 pl
dc.description.number 2 pl
dc.identifier.doi 10.1088/0004-637X/786/2/144 pl
dc.identifier.eissn 1538-4357 pl
dc.title.journal The Astrophysical Journal 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 144 pl
dc.rights.original OTHER; otwarte czasopismo; ostateczna wersja wydawcy; po opublikowaniu; 12 pl
.pointsMNiSW [2014 A]: 40

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