Red giant branch bump brightness in 7 metal-poor globular clusters obtained with GAIA DR2
文献类型:期刊论文
作者 | Song, Fen1,2; Yuan, Zunli3; Li Y(李焱)2,4,5,6; Wu, Xuchao1; Pietrinferni, Adriano7; Poon, Helen8; Wu T(吴涛)4; Nie, Jundan9; Song, Hanfeng2,10,11; Han, Cheng1 |
刊名 | ASTROPHYSICS AND SPACE SCIENCE |
出版日期 | 2022-03 |
卷号 | 367期号:3 |
ISSN号 | 0004-640X |
关键词 | Globular clusters: general Red giant branch bump Hertzsprung-Russell diagrams |
DOI | 10.1007/s10509-022-04058-1 |
产权排序 | 第4完成单位 |
文献子类 | Article |
英文摘要 | The identification of the red giant branch bump brightness in metal-poor globular clusters is important for low-mass stellar evolution. The release of Gaia DR2 prompted us to revisit the red giant branch bump (RGBB) in galactic globular clusters. We apply a popular nonparametric density estimation approach, kernel density estimation (KDE), to explore the position of RGBB in 7 metal-poor globular clusters (GCs). The G and V magnitudes of the RGBB according to our clustering algorithm, G(B, K) and V-B,V-K, respectively show the RGB bump magnitude detected by the KDE method in G band and V band. They show the overdensity location in the luminosity function of the RGB stars. Based on the results derived by KDE, a maximum-likelihood analysis via a Markov Chain Monte Carlo (MCMC) approach is adopted to detect the RGB bump feature and obtain more accurate RGBB brightnesses in G band and V band for the samples. We find that the red giant branch bump brightness becomes fainter as the global metallicity increases in clusters with [M/H] <= -1.4. We present the empirical relation between the global metallicity [M/H] and absolute magnitude MV of the red giant branch bump for clusters with [M/H] <= -1.4. We verify that discrepancies between observations and theory for metal-poor globular clusters with [M/H] <= -1.4. |
学科主题 | 天文学 ; 恒星与银河系 ; 恒星物理学 |
URL标识 | 查看原文 |
出版地 | VAN GODEWIJCKSTRAAT 30, 3311 GZ DORDRECHT, NETHERLANDS |
WOS关键词 | STELLAR EVOLUTION DATABASE ; KERNEL DENSITY-ESTIMATION ; LUMINOSITY FUNCTION ; POPULATION SYNTHESIS ; MODELS ; MAGNITUDE ; PARAMETER ; AGE ; ISOCHRONES ; PHOTOMETRY |
资助项目 | NSFC of ChinaNational Natural Science Foundation of China (NSFC)[11333006] ; NSFC of ChinaNational Natural Science Foundation of China (NSFC)[11521303] ; NSFC of ChinaNational Natural Science Foundation of China (NSFC)[11373020] ; NSFC of ChinaNational Natural Science Foundation of China (NSFC)[11503079] ; NSFC of ChinaNational Natural Science Foundation of China (NSFC)[11603009] ; NSFC of ChinaNational Natural Science Foundation of China (NSFC)[11503076] ; NSFC of ChinaNational Natural Science Foundation of China (NSFC)[11773064] ; NSFC of ChinaNational Natural Science Foundation of China (NSFC)[11803009] ; NSFC of ChinaNational Natural Science Foundation of China (NSFC)[11863003] ; NSFC of ChinaNational Natural Science Foundation of China (NSFC)[12073069] ; foundation of the Chinese Academy of SciencesChinese Academy of Sciences[XDB09010202] ; Natural Science Foundation of Fujian ProvinceNatural Science Foundation of Fujian Province[2016J05013] ; Natural Science Foundation of Fujian ProvinceNatural Science Foundation of Fujian Province[2018J05006] ; Natural Science Foundation of Fujian ProvinceNatural Science Foundation of Fujian Province[2018J05007] ; Education Department of Fujian Province[JAT200272] ; Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences[OP201404] ; Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences[B615015] ; Yunnan Natural Science FoundationNatural Science Foundation of Yunnan Province[2019FB008] ; Yunnan Applied Basic Research Projects[2017B008] ; Science Foundation of Jimei University[C613030] ; Science Foundation of Jimei University[C519141(ZP2020060)] |
WOS研究方向 | Astronomy & Astrophysics |
语种 | 英语 |
出版者 | SPRINGER |
WOS记录号 | WOS:000769472500003 |
资助机构 | NSFC of ChinaNational Natural Science Foundation of China (NSFC)[11333006, 11521303, 11373020, 11503079, 11603009, 11503076, 11773064, 11803009, 11863003, 12073069] ; foundation of the Chinese Academy of SciencesChinese Academy of Sciences[XDB09010202] ; Natural Science Foundation of Fujian ProvinceNatural Science Foundation of Fujian Province[2016J05013, 2018J05006, 2018J05007] ; Education Department of Fujian Province[JAT200272] ; Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences[OP201404, B615015] ; Yunnan Natural Science FoundationNatural Science Foundation of Yunnan Province[2019FB008] ; Yunnan Applied Basic Research Projects[2017B008] ; Science Foundation of Jimei University[C613030, C519141(ZP2020060)] |
版本 | 出版稿 |
源URL | [http://ir.ynao.ac.cn/handle/114a53/24975] |
专题 | 云南天文台_恒星物理研究组 云南天文台_中国科学院天体结构与演化重点实验室 |
通讯作者 | Song, Fen |
作者单位 | 1.College of Science, Jimei University, Xiamen, 361021, China; 2.Key Laboratory for Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, P.O. Box 110, Kunming, 650216, China; 3.Department of Physics, School of Physics and Electronics, Hunan Normal University, Changsha, 410081, China; 4.Yunnan Observatories, Chinese Academy of Sciences, P.O. Box 110, Kunming, 650216, China; 5.Center for Astronomical Mega-Science, Chinese Academy of Sciences, Beijing, 100012, China; 6.University of Chinese Academy of Sciences, Beijing, 100049, China; 7.INAF-Osservatorio Astronomico d’Abruzzo, via M. Maggini, 64100, Teramo, Italy; 8.Department of Physical Science, Hiroshima University, 1-3-1 Kagamiyama, Higashi-Hiroshima, Hiroshima, 7398526, Japan; 9.Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences, Beijing, 100012, China; 10.College of Physics, Guizhou University, Guiyang, Guizhou Province, 550025, China; |
推荐引用方式 GB/T 7714 | Song, Fen,Yuan, Zunli,Li Y,et al. Red giant branch bump brightness in 7 metal-poor globular clusters obtained with GAIA DR2[J]. ASTROPHYSICS AND SPACE SCIENCE,2022,367(3). |
APA | Song, Fen.,Yuan, Zunli.,Li Y.,Wu, Xuchao.,Pietrinferni, Adriano.,...&Bai, Xingming.(2022).Red giant branch bump brightness in 7 metal-poor globular clusters obtained with GAIA DR2.ASTROPHYSICS AND SPACE SCIENCE,367(3). |
MLA | Song, Fen,et al."Red giant branch bump brightness in 7 metal-poor globular clusters obtained with GAIA DR2".ASTROPHYSICS AND SPACE SCIENCE 367.3(2022). |
入库方式: OAI收割
来源:云南天文台
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