Discovery of a tidal dwarf galaxy in the Leo Triplet

2014
journal article
article
9
cris.lastimport.wos2024-04-09T19:06:22Z
dc.abstract.enWe 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.affiliationWydział Fizyki, Astronomii i Informatyki Stosowanej : Instytut – Obserwatorium Astronomicznepl
dc.contributor.authorNikiel-Wroczyński, Błażej - 110571 pl
dc.contributor.authorSoida, Marian - 100044 pl
dc.contributor.authorBomans, Dominik J.pl
dc.contributor.authorUrbanik, Marek - 132483 pl
dc.date.accessioned2015-03-11T10:35:45Z
dc.date.available2015-03-11T10:35:45Z
dc.date.issued2014pl
dc.date.openaccess12
dc.description.accesstimepo opublikowaniu
dc.description.number2pl
dc.description.versionostateczna wersja wydawcy
dc.description.volume786pl
dc.identifier.articleid144pl
dc.identifier.doi10.1088/0004-637X/786/2/144pl
dc.identifier.eissn1538-4357pl
dc.identifier.issn0004-637Xpl
dc.identifier.urihttp://ruj.uj.edu.pl/xmlui/handle/item/3698
dc.languageengpl
dc.language.containerengpl
dc.rights.licenceOTHER
dc.share.typeotwarte czasopismo
dc.subject.engalaxies: groups: individual (Arp 317, Leo Triplet)pl
dc.subject.engalaxies: interactionspl
dc.subject.enintergalactic mediumpl
dc.subtypeArticlepl
dc.titleDiscovery of a tidal dwarf galaxy in the Leo Tripletpl
dc.title.journalThe Astrophysical Journalpl
dc.typeJournalArticlepl
dspace.entity.typePublication
cris.lastimport.wos
2024-04-09T19:06:22Z
dc.abstract.enpl
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.
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
Bomans, Dominik J.
dc.contributor.authorpl
Urbanik, Marek - 132483
dc.date.accessioned
2015-03-11T10:35:45Z
dc.date.available
2015-03-11T10:35:45Z
dc.date.issuedpl
2014
dc.date.openaccess
12
dc.description.accesstime
po opublikowaniu
dc.description.numberpl
2
dc.description.version
ostateczna wersja wydawcy
dc.description.volumepl
786
dc.identifier.articleidpl
144
dc.identifier.doipl
10.1088/0004-637X/786/2/144
dc.identifier.eissnpl
1538-4357
dc.identifier.issnpl
0004-637X
dc.identifier.uri
http://ruj.uj.edu.pl/xmlui/handle/item/3698
dc.languagepl
eng
dc.language.containerpl
eng
dc.rights.licence
OTHER
dc.share.type
otwarte czasopismo
dc.subject.enpl
galaxies: groups: individual (Arp 317, Leo Triplet)
dc.subject.enpl
galaxies: interactions
dc.subject.enpl
intergalactic medium
dc.subtypepl
Article
dc.titlepl
Discovery of a tidal dwarf galaxy in the Leo Triplet
dc.title.journalpl
The Astrophysical Journal
dc.typepl
JournalArticle
dspace.entity.type
Publication

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