Correction to the Photometric Magnitudes of the Gaia Early Data Release 3
文献类型：期刊论文
| 作者 | Yang,Lin1; Yuan,Haibo2; Zhang,Ruoyi2; Niu,Zexi4; Huang,Yang3; Duan,Fuqing1; Fang,Yi2 |
| 刊名 | The Astrophysical Journal Letters
 |
| 出版日期 | 2021-02-01 |
| 卷号 | 908期号:2 |
| 关键词 | Astronomy data analysis Fundamental parameters of stars Stellar photometry |
| ISSN号 | 2041-8205 |
| DOI | 10.3847/2041-8213/abdbae |
| 英文摘要 | Abstract In this Letter, we have carried out an independent validation of the Gaia Early Data Release 3 (EDR3) photometry using approximately 10,000 Landolt standard stars from Clem & Landolt (2013). Using a machine-learning technique, the UBVRI magnitudes are converted into the Gaia magnitudes and colors and then compared to those in the EDR3, with the effect of metallicity incorporated. Our result confirms the significant improvements in the calibration process of the Gaia EDR3. However, modest trends up to 10 mmag with the G magnitude are found for all magnitudes and colors in the 10 < G < 19 mag range, particularly for the bright and faint ends. With the aid of synthetic magnitudes computed on the CALSPEC spectra with the Gaia EDR3 passbands, absolute corrections are further obtained, paving the way for optimal usage of the Gaia EDR3 photometry in high-accuracy investigations. |
| 语种 | 英语 |
| WOS记录号 | IOP:2041-8205-908-2-ABDBAE |
| 出版者 | The American Astronomical Society |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/57962]  |
| 专题 | 中国科学院国家天文台 |
| 作者单位 | 1.College of Artificial Intelligence, Beijing Normal University No.19, Xinjiekouwai St, Haidian District, Beijing, 100875, People’s Republic of China fqduan@bnu.edu.cn 2.Department of Astronomy, Beijing Normal University No.19, Xinjiekouwai St, Haidian District, Beijing, 100875, People’s Republic of China; yuanhb@bnu.edu.cn 3.South-Western Institute for Astronomy Research, Yunnan University, Kunming 650500, People’s Republic of China 4.National Astronomical Observatories, Chinese Academy of Sciences 20A Datun Road, Chaoyang District, Beijing, People’s Republic of China |
| 推荐引用方式 GB/T 7714 | Yang,Lin,Yuan,Haibo,Zhang,Ruoyi,et al. Correction to the Photometric Magnitudes of the Gaia Early Data Release 3[J]. The Astrophysical Journal Letters,2021,908(2). |
| APA | Yang,Lin.,Yuan,Haibo.,Zhang,Ruoyi.,Niu,Zexi.,Huang,Yang.,...&Fang,Yi.(2021).Correction to the Photometric Magnitudes of the Gaia Early Data Release 3.The Astrophysical Journal Letters,908(2). |
| MLA | Yang,Lin,et al."Correction to the Photometric Magnitudes of the Gaia Early Data Release 3".The Astrophysical Journal Letters 908.2(2021). |
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来源：国家天文台
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