CHARACTERIZING AND PROPAGATING MODELING UNCERTAINTIES IN PHOTOMETRICALLY DERIVED REDSHIFT DISTRIBUTIONS
文献类型：期刊论文
| 作者 | Abrahamse, Augusta1,2; Knox, Lloyd1; Schmidt, Samuel1; Thorman, Paul1; Tyson, J. Anthony1; Zhan, Hu3
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| 刊名 | ASTROPHYSICAL JOURNAL
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| 出版日期 | 2011-06-10 |
| 卷号 | 734期号:1 |
| 关键词 | cosmological parameters cosmology: observations galaxies: distances and redshifts galaxies: photometry gravitational lensing: weak |
| 英文摘要 | The uncertainty in the redshift distributions of galaxies has a significant potential impact on the cosmological parameter values inferred from multi-band imaging surveys. The accuracy of the photometric redshifts measured in these surveys depends not only on the quality of the flux data, but also on a number of modeling assumptions that enter into both the training set and spectral energy distribution (SED) fitting methods of photometric redshift estimation. In this work we focus on the latter, considering two types of modeling uncertainties: uncertainties in the SED template set and uncertainties in the magnitude and type priors used in a Bayesian photometric redshift estimation method. We find that SED template selection effects dominate over magnitude prior errors. We introduce a method for parameterizing the resulting ignorance of the redshift distributions, and for propagating these uncertainties to uncertainties in cosmological parameters. |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000291026900036 |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/7901]  |
| 专题 | 国家天文台_空间科学研究部 |
| 作者单位 | 1.Univ Calif Davis, Dept Phys, Davis, CA 95616 USA 2.Univ Privada Boliviana, Cochabamba, Bolivia 3.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China |
| 推荐引用方式 GB/T 7714 | Abrahamse, Augusta,Knox, Lloyd,Schmidt, Samuel,et al. CHARACTERIZING AND PROPAGATING MODELING UNCERTAINTIES IN PHOTOMETRICALLY DERIVED REDSHIFT DISTRIBUTIONS[J]. ASTROPHYSICAL JOURNAL,2011,734(1). |
| APA | Abrahamse, Augusta,Knox, Lloyd,Schmidt, Samuel,Thorman, Paul,Tyson, J. Anthony,&Zhan, Hu.(2011).CHARACTERIZING AND PROPAGATING MODELING UNCERTAINTIES IN PHOTOMETRICALLY DERIVED REDSHIFT DISTRIBUTIONS.ASTROPHYSICAL JOURNAL,734(1). |
| MLA | Abrahamse, Augusta,et al."CHARACTERIZING AND PROPAGATING MODELING UNCERTAINTIES IN PHOTOMETRICALLY DERIVED REDSHIFT DISTRIBUTIONS".ASTROPHYSICAL JOURNAL 734.1(2011). |
入库方式： OAI收割
来源：国家天文台
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