천문학회보 (The Bulletin of The Korean Astronomical Society)
- 제42권1호
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- Pages.48.3-48.3
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- 2017
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- 1226-2692(pISSN)
On the origin of the Oosterhoff-intermediate characteristics of RR Lyrae stars in dwarf galaxies
- Jang, Sohee (Center for Galaxy Evolution Research and Department of Astronomy, Yonsei University) ;
- Lee, Young-Wook (Center for Galaxy Evolution Research and Department of Astronomy, Yonsei University)
- 발행 : 2017.04.10
초록
In our recent investigation of the Oosterhoff dichotomy among globular clusters (GCs), we have shown that the RR Lyrae variables in the Oosterhoff groups I, II, and III are produced mostly by first, second, and third generation stars (G1, G2, and G3), respectively. Unlike GCs, RR Lyrae stars in the Local Group dwarf galaxies show Oosterhoff-intermediate characteristics. The origin of this, however, is yet to be understood. In this poster, we will present our progress in understanding the origin of this phenomenon.
키워드