Neutral hydrogen (HI) gas is the fundamental material for star formation that drives the evolution of a galaxy. For starburst dwarf galaxy NGC 5253, previous study has observed HI gas distributed asymmetrically with ~7 kpc extension toward north-east direction using the radio interferometry. This extension is likely indicating the dynamical connection between NGC 5253 and its nearby spiral galaxy M 83. To investigate the possible HI bridge between these two galactic systems, we acquire the HI mapping data around NGC 5253 in radio L-band from the Robert C. Byrd Green Bank Telescope. We have detected the 7 possible HI gas clouds between NGC 5253 and M 83. These HI gas cloud candidates distribute mainly in the north-east direction extending over 60 kpc from NGC 5253. These clouds could play an important role in triggering intensive star formation activity in the dwarf galaxy NGC 5253.
WO Jiayi
,
TSAI Chao-Wei
,
ZUO Pei
,
CHEN Tianlu
. HI distribution in dwarf starburst galaxy NGC 5253[J]. Journal of University of Chinese Academy of Sciences, 2024
, 41(2)
: 188
-194
.
DOI: 10.7523/j.ucas.2022.040
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