| Age Determination of LAMOST Red Giant Branch Stars Based on the Gradient Boosting Decision Tree Method | |
Wang, Hai-Feng1; Carraro, Giovanni1; Li, Xin2; Li QD(李启达)3 ; Spina, Lorenzo4; Chen, Li5; Wang, Guan-Yu2; Deng, Li-Cai6
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| 发表期刊 | ASTROPHYSICAL JOURNAL
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| 2024-05-01 | |
| 卷号 | 967期号:1 |
| DOI | 10.3847/1538-4357/ad3b90 |
| 产权排序 | 第3完成单位 |
| 收录类别 | SCI |
| 摘要 | In this study, we estimate the stellar ages of LAMOST DR8 red giant branch (RGB) stars based on the gradient boosting decision tree (GBDT) algorithm. We used 2643 RGB stars extracted from the APOKASC-2 asteroseismological catalog as the training data set. After selecting the parameters ([alpha/Fe], [C/Fe], T eff, [N/Fe], [C/H], log g) highly correlated with age using GBDT, we apply the same GBDT method to the new catalog of more than 590,000 stars classified as RGB stars. The test data set shows that the median relative error is around 11.6% for the method. We also compare the predicted ages of RGB stars with other studies (e.g., based on APOGEE) and find some systematic differences. The final uncertainty is about 15%-30% compared to the ages of open clusters. Then, we present the spatial distribution of the RGB sample with an age determination, which could recreate the expected result, and discuss systematic biases. All these diagnostics show that one can apply the GBDT method to other stellar samples to estimate atmospheric parameters and age. |
| 资助项目 | Department of Physics and Astronomy of Padova University; National Development and Reform Commission; Chinese Academy of Sciences |
| 项目资助者 | Department of Physics and Astronomy of Padova University ; National Development and Reform Commission ; Chinese Academy of Sciences |
| 语种 | 英语 |
| 学科领域 | 天文学 ; 恒星与银河系 |
| 文章类型 | Article |
| 出版者 | IOP Publishing Ltd |
| 出版地 | TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND |
| ISSN | 0004-637X |
| URL | 查看原文 |
| WOS记录号 | WOS:001224161400001 |
| WOS研究方向 | Astronomy & Astrophysics |
| WOS类目 | Astronomy & Astrophysics |
| 关键词[WOS] | HIGH-PRECISION ABUNDANCES ; SOLAR TWINS TRENDS ; GALACTIC DISK ; MILKY-WAY ; CLUMP STARS ; CHEMICAL CARTOGRAPHY ; STELLAR PARAMETERS ; APOKASC CATALOG ; APOGEE ; MASS |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 版本 | 出版稿 |
| 条目标识符 | http://ir.ynao.ac.cn/handle/114a53/27202 |
| 专题 | 大样本恒星演化研究组 |
| 作者单位 | 1.Dipartimento di Fisica e Astronomia "Galileo Galilei," Università degli Studi di Padova, Vicolo Osservatorio 3, I-35122, Padova, Italy;[email protected]
[email protected]; 2.Department of Astronomy, China West Normal University, Nanchong, 637002, People's Republic of China; 3.Yunnan Observatories, Chinese Academy of Sciences, Kunming 650216, People's Republic of China; 4.INAF-Padova Observatory, Vicolo dell'Osservatorio 5, 35122 Padova, Italy; 5.Shanghai Astronomical Observatory, Chinese Academy of Sciences, 80 Nandan Road, Shanghai 200030, People's Republic of China; 6.National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100101, People's Republic of China |
| 推荐引用方式 GB/T 7714 | Wang, Hai-Feng,Carraro, Giovanni,Li, Xin,et al. Age Determination of LAMOST Red Giant Branch Stars Based on the Gradient Boosting Decision Tree Method[J]. ASTROPHYSICAL JOURNAL,2024,967(1). |
| APA | Wang, Hai-Feng.,Carraro, Giovanni.,Li, Xin.,李启达.,Spina, Lorenzo.,...&Deng, Li-Cai.(2024).Age Determination of LAMOST Red Giant Branch Stars Based on the Gradient Boosting Decision Tree Method.ASTROPHYSICAL JOURNAL,967(1). |
| MLA | Wang, Hai-Feng,et al."Age Determination of LAMOST Red Giant Branch Stars Based on the Gradient Boosting Decision Tree Method".ASTROPHYSICAL JOURNAL 967.1(2024). |
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| Age Determination of（2369KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | 浏览 请求全文 | |
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