메뉴 건너뛰기

Speaker : Prof. Young-Sun Lee (Chungnam National University)

TITLE : Carbon-Enhanced Metal-Poor (CEMP) Stars in the Milky Way

 

ABSTRACT : The objective-prism surveys such as HK and Hamburg ESO (HES) discovered numerous Very Metal-Poor (VMP; [Fe/H] < -2.0) stars in the Milky Way. Recently, the number of VMP stars has been dramatically increased to many tens of thousands, thanks to Sloan Digital Sky Survey (SDSS) and Sloan Extension for Galactic Understand and Exploration (SEGUE). Detailed chemical-abundance analyses, based on high-resolution spectroscopic follow-up, have revealed that, while most VMP stars exhibit similar abundance patterns, there are numerous examples of objects with peculiar chemical patterns. Among the chemically peculiar stars with [Fe/H] < -2.0, objects with enhanced carbon abundance are the most common variety. These are called Carbon-Enhanced Metal-Poor (CEMP) stars. One of the most interesting aspects of the CEMP stars is that the fraction of the CEMP stars increases as the metallicity decreases. In this talk, I will review the current understanding of the CEMP stars and discuss their implication to the first-generation stars and the origin of the Milky Way galaxy.

번호 제목 글쓴이 날짜 조회 수
공지 [09/8] Magnetizing the Universe during the Epoch of Reionization [17] webmaster 2017.09.03 206
51 [3/13] The effects of the cluster environment on dwarf galaxies - ram pressure and harassment webmaster 2015.03.07 6965
50 [4/3] GPS 교란상황에서의 항법기술 (Navigation in GPS-denied Environments) webmaster 2015.03.30 6495
49 [9/11] Compact binaries as gravitational-wave sources [61] webmaster 2015.09.10 6157
48 [5/1] 고해상도 SAR 위성 시스템 및 궤도상 성능 검증 결과 webmaster 2015.04.27 5835
47 [5/8] KMTNet 망원경을 이용한 초신성 연구 webmaster 2015.06.03 5676
46 [3/25] Galaxy Evolution in Dense Environments at z~2 [30] webmaster 2016.03.21 4804
45 [5/27] 인공위성 자세제어 테스트베드 글로벌 연구 동향 및 CMG 기반 스마트 자세제어 기술 webmaster 2016.05.26 4529
44 [3/24] National Space Situational Awareness Initiative webmaster 2017.03.20 4265
43 [3/20] Evolution of Late-Type Galaxies in Galaxy Clusters: Cold gas webmaster 2015.03.16 3341
42 [5/13] Mid-infrared excess emission of galaxies and implications for the star formation history webmaster 2016.05.10 3073
41 [5/22] 인공위성 관제시스템 개발 및 운용 webmaster 2015.06.03 2919
» [6/5] Carbon-Enhanced Metal-Poor (CEMP) Stars in the Milky Way webmaster 2015.06.03 2865
39 [12/13] Galaxy Transformation in the local Universe webmaster 2016.12.05 2506
38 [4/10] Chemical Composition of Components of Eclipsing Binaries webmaster 2015.04.27 2445
37 [5/29] Mapping the Large-Scale Structure around Galaxy Clusters webmaster 2015.06.03 2422
36 [4/24] Frontiers of Semi-Analytic Models: from ICL modelling to the galaxy population in proto-clusters webmaster 2015.04.27 2367
35 [4/8] 영상센서를 이용한 저궤도 행성위성 궤도결정 기법 webmaster 2016.04.05 2354
34 [3/4] Active Electro-Optical Systems for Space Applications (SLR and Laser Altimeter) webmaster 2016.03.04 2324
33 [4/1] Growth of Seed Black Holes webmaster 2016.03.28 2266
32 [3/17] A New Paradigm for Star Formation: Episodic Accretion webmaster 2017.03.15 2259