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Discovery of a tidal dwarf galaxy in the Leo Triplet
galaxies: groups: individual (Arp 317, Leo Triplet)
galaxies: interactions
intergalactic medium
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.
cris.lastimport.wos | 2024-04-09T19:06:22Z | |
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.affiliation | Wydział Fizyki, Astronomii i Informatyki Stosowanej : Instytut – Obserwatorium Astronomiczne | pl |
dc.contributor.author | Nikiel-Wroczyński, Błażej - 110571 | pl |
dc.contributor.author | Soida, Marian - 100044 | pl |
dc.contributor.author | Bomans, Dominik J. | pl |
dc.contributor.author | Urbanik, Marek - 132483 | pl |
dc.date.accessioned | 2015-03-11T10:35:45Z | |
dc.date.available | 2015-03-11T10:35:45Z | |
dc.date.issued | 2014 | pl |
dc.date.openaccess | 12 | |
dc.description.accesstime | po opublikowaniu | |
dc.description.number | 2 | pl |
dc.description.version | ostateczna wersja wydawcy | |
dc.description.volume | 786 | pl |
dc.identifier.articleid | 144 | pl |
dc.identifier.doi | 10.1088/0004-637X/786/2/144 | pl |
dc.identifier.eissn | 1538-4357 | pl |
dc.identifier.issn | 0004-637X | pl |
dc.identifier.uri | http://ruj.uj.edu.pl/xmlui/handle/item/3698 | |
dc.language | eng | pl |
dc.language.container | eng | pl |
dc.rights.licence | OTHER | |
dc.share.type | otwarte czasopismo | |
dc.subject.en | galaxies: groups: individual (Arp 317, Leo Triplet) | pl |
dc.subject.en | galaxies: interactions | pl |
dc.subject.en | intergalactic medium | pl |
dc.subtype | Article | pl |
dc.title | Discovery of a tidal dwarf galaxy in the Leo Triplet | pl |
dc.title.journal | The Astrophysical Journal | pl |
dc.type | JournalArticle | pl |
dspace.entity.type | Publication |