BayeSED: A GENERAL APPROACH TO FITTING THE SPECTRAL ENERGY DISTRIBUTION OF GALAXIES
文献类型：期刊论文
| 作者 | Han YK(韩云坤)1,2 ; Han ZW(韩占文)1,2
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| 刊名 | ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES
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| 出版日期 | 2014-11 |
| 卷号 | 215期号:1 |
| ISSN号 | 0067-0049 |
| 关键词 | galaxies: evolution galaxies: fundamental parameters galaxies: statistics galaxies: stellar content methods: data analysis methods: statistical |
| 通讯作者 | Han, YK (reprint author), Chinese Acad Sci, Yunnan Observ, Kunming 650011, Peoples R China. |
| 产权排序 | 第一完成单位 |
| 英文摘要 | We present a newly developed version of BayeSED, a general Bayesian approach to the spectral energy distribution (SED) fitting of galaxies. The new BayeSED code has been systematically tested on a mock sample of galaxies. The comparison between the estimated and input values of the parameters shows that BayeSED can recover the physical parameters of galaxies reasonably well. We then applied BayeSED to interpret the SEDs of a large K-s-selected sample of galaxies in the COSMOS/UltraVISTA field with stellar population synthesis models. Using the new BayeSED code, a Bayesian model comparison of stellar population synthesis models has been performed for the first time. We found that the 2003 model by Bruzual & Charlot, statistically speaking, has greater Bayesian evidence than the 2005 model by Maraston for the K-s-selected sample. In addition, while setting the stellar metallicity as a free parameter obviously increases the Bayesian evidence of both models, varying the initial mass function has a notable effect only on the Maraston model. Meanwhile, the physical parameters estimated with BayeSED are found to be generally consistent with those obtained using the popular grid-based FAST code, while the former parameters exhibit more natural distributions. Based on the estimated physical parameters of the galaxies in the sample, we qualitatively classified the galaxies in the sample into five populations that may represent galaxies at different evolution stages or in different environments. We conclude that BayeSED could be a reliable and powerful tool for investigating the formation and evolution of galaxies from the rich multi-wavelength observations currently available. |
| 学科主题 | Astronomy & Astrophysics |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 类目[WOS] | Astronomy & Astrophysics |
| 研究领域[WOS] | Astronomy & Astrophysics |
| 关键词[WOS] | ACTIVE GALACTIC NUCLEI ; STELLAR POPULATION SYNTHESIS ; SUPERMASSIVE BLACK-HOLES ; INITIAL MASS FUNCTION ; DIGITAL SKY SURVEY ; ARTIFICIAL NEURAL-NETWORKS ; STAR-FORMATION RATES ; TP-AGB STARS ; ESTIMATING PHOTOMETRIC REDSHIFTS ; POST-STARBURST GALAXIES |
| 收录类别 | SCI |
| 原文出处 | http://iopscience.iop.org/article/10.1088/0067-0049/215/1/2/meta |
| 语种 | 英语 |
| WOS记录号 | WOS:000344141800002 |
| 源URL | [http://ir.ynao.ac.cn/handle/114a53/4570]  |
| 专题 | 云南天文台_大样本恒星演化研究组 云南天文台_中国科学院天体结构与演化重点实验室 |
| 作者单位 | 1.Yunnan Observatories, Chinese Academy of Sciences, Kunming, 650011, China 2.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, Kunming, 650011, China |
| 推荐引用方式 GB/T 7714 | Han YK,Han ZW. BayeSED: A GENERAL APPROACH TO FITTING THE SPECTRAL ENERGY DISTRIBUTION OF GALAXIES[J]. ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES,2014,215(1). |
| APA | Han YK,&Han ZW.(2014).BayeSED: A GENERAL APPROACH TO FITTING THE SPECTRAL ENERGY DISTRIBUTION OF GALAXIES.ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES,215(1). |
| MLA | Han YK,et al."BayeSED: A GENERAL APPROACH TO FITTING THE SPECTRAL ENERGY DISTRIBUTION OF GALAXIES".ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES 215.1(2014). |
入库方式： OAI收割
来源：云南天文台
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