천문학회보 (The Bulletin of The Korean Astronomical Society)
- 제39권2호
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- Pages.60.2-60.2
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- 2014
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- 1226-2692(pISSN)
Hierarchical Structure of Star-Forming Regions in the Local Group
- Kang, Yongbeom (Korea Astronomy and Space Science Institute) ;
- Bianchi, Luciana (Department of physics and astronomy, Johns Hopkins University) ;
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Kyeong, Jaeman
(Korea Astronomy and Space Science Institute)
;
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Jeong, Hyunjin
(Korea Astronomy and Space Science Institute)
- 발행 : 2014.10.13
초록
Hierarchical structure of star-forming regions is widespread and may be characteristic of all star formation. We studied the hierarchical structure of star-forming regions in the Local Group galaxies (M31, M33, Phoenix, Pegasus, Sextans A, Sextans B, WLM). The star-forming regions were selected from Galaxy Evolution Explorer (GALEX) far-UV imaging in various detection thresholds for investigating hierarchical structure. We examined the spatial distribution of the hot massive stars within star-forming regions from Hubble Space Telescope (HST) multi-band photometry. Small compact groups arranged within large complexes. The cumulative mass distribution follows a power law. The results allow us to understand the hierarchical structure of star formation and recent evolution of the Local Group galaxies.
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