Asteroid characterization using Gaia Data Release 3 II. Taxonomic classification
文献类型：期刊论文
| 作者 | Pentikäinen, Hanna2; MacLennan, Eric M.2; Penttilä, Antti2; Muinonen, Karri2; Oszkiewicz, Dagmara A.1; Cellino, Alberto6; Tanga, Paolo5; Wang XB(王晓彬)4; Siltala, Lauri3 |
| 刊名 | ASTRONOMY & ASTROPHYSICS
 |
| 出版日期 | 2026-03-16 |
| 卷号 | 707 |
| 关键词 | minor planets asteroids: general |
| ISSN号 | 0004-6361 |
| DOI | 10.1051/0004-6361/202556127 |
| 产权排序 | 第5完成单位 |
| 文献子类 | Article |
| 英文摘要 | Context. We study the taxonomic classification of asteroids observed by Gaia as a continuation of the lightcurve inversion work presented in Paper I. Aims. We examine the taxonomic classification of asteroids by using both Gaia Data Release 3 (DR3) photometric and spectroscopic data. Particular focus is placed on Ch-class asteroids, as their potentially hydrated nature makes them promising candidates for sample-return missions and the asteroid mining industry. Methods. We utilized the photometric slopes and geometric albedos (via absolute magnitudes) derived from lightcurve inversion, and the Gaia DR3 spectra (from 418 nm to 770 nm) as classification parameters. We also considered how different parameter sets affect classification accuracies for separate asteroid classes. We classified the asteroids with a combination of linear discriminant analysis and a nearest neighbor classifier. Results. We achieve a classification accuracy of 92% for known S-class asteroids and an accuracy of 85% for Ch-class asteroids with a known set of 328 asteroids. Given the three classification parameters, tentative class designations for 1668 previously unclassified asteroids are provided in the Mahlke taxonomy. We also show that the photometric slope values vary significantly within asteroid classes, with a standard deviation three to four times the mean slope uncertainties. Conclusions. We show that the combination of photometry and spectroscopy can be useful in the taxonomic classification of asteroids observed by Gaia. Further studies of the surface roughness at different scales could help clarify the potential of the photometric slope in classification efforts. |
| 学科主题 | 天文学 ; 恒星与银河系 |
| URL标识 | 查看原文 |
| 出版地 | 17, AVE DU HOGGAR, PA COURTABOEUF, BP 112, F-91944 LES ULIS CEDEX A, FRANCE |
| WOS关键词 | PHASE FUNCTION |
| 资助项目 | N/A |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:001715511400001 |
| 出版者 | EDP SCIENCES S A |
| 资助机构 | [336546] ; [359893] ; [I/058/10/0] ; [2014-025-R.0] ; [2014-025-R.1.2015] ; [2018-24- HH.0] ; [2014-049-R.0/1/2] ; [H20240864] ; [2022/45/B/ST9/00267] ; [I/037/08/0] ; [I/008/10/0] ; [2013/030/I.0] ; [2013- 030-I.0.1-2015] ; [2016-17-I.0] ; [347627] |
| 版本 | 出版稿 |
| 源URL | [http://ir.ynao.ac.cn/handle/114a53/29039]  |
| 专题 | 云南天文台_系外行星研究组 |
| 通讯作者 | Pentikäinen, Hanna |
| 作者单位 | 1.Astronomical Observatory Institute, Faculty of Physics, A. Mickiewicz University, Słoneczna 36, 60-286 Poznań, Poland; 2.Department of Physics, PO Box 64, 00014 University of Helsinki, Finland; 3.Karman+, 11365 Main St, Broomfield, CO 80020, USA 4.Yunnan Observatories, Chinese Academy of Sciences, Kunming, China; 5.Université Côte d’Azur, Observatoire de la Côte d’Azur, CNRS, Laboratoire Lagrange, France; 6.INAF – Osservatorio Astrofisico di Torino, 10025 Pino Torinese, Italy; |
| 推荐引用方式 GB/T 7714 | Pentikäinen, Hanna,MacLennan, Eric M.,Penttilä, Antti,et al. Asteroid characterization using Gaia Data Release 3 II. Taxonomic classification[J]. ASTRONOMY & ASTROPHYSICS,2026,707. |
| APA | Pentikäinen, Hanna.,MacLennan, Eric M..,Penttilä, Antti.,Muinonen, Karri.,Oszkiewicz, Dagmara A..,...&Siltala, Lauri.(2026).Asteroid characterization using Gaia Data Release 3 II. Taxonomic classification.ASTRONOMY & ASTROPHYSICS,707. |
| MLA | Pentikäinen, Hanna,et al."Asteroid characterization using Gaia Data Release 3 II. Taxonomic classification".ASTRONOMY & ASTROPHYSICS 707(2026). |
入库方式： OAI收割
来源：云南天文台
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