STANDARDIZING TYPE Ia SUPERNOVA ABSOLUTE MAGNITUDES USING GAUSSIAN PROCESS DATA REGRESSION
文献类型：期刊论文
| 作者 | Kim, A. G.1; Thomas, R. C.2; Aldering, G.1; Antilogus, P.3; Aragon, C.1; Bailey, S.1; Baltay, C.4; Bongard, S.3; Buton, C.5; Canto, A.3 |
| 刊名 | ASTROPHYSICAL JOURNAL
 |
| 出版日期 | 2013-04-01 |
| 卷号 | 766期号:2 |
| 关键词 | distance scale methods: data analysis supernovae: general |
| 英文摘要 | We present a novel class of models for Type Ia supernova time-evolving spectral energy distributions (SEDs) and absolute magnitudes: they are each modeled as stochastic functions described by Gaussian processes. The values of the SED and absolute magnitudes are defined through well-defined regression prescriptions, so that data directly inform the models. As a proof of concept, we implement a model for synthetic photometry built from the spectrophotometric time series from the Nearby Supernova Factory. Absolute magnitudes at peak B brightness are calibrated to 0.13 mag in the g band and to as low as 0.09 mag in the z = 0.25 blueshifted i band, where the dispersion includes contributions from measurement uncertainties and peculiar velocities. The methodology can be applied to spectrophotometric time series of supernovae that span a range of redshifts to simultaneously standardize supernovae together with fitting cosmological parameters. |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000316320900018 |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/5940]  |
| 专题 | 国家天文台_空间科学研究部 |
| 作者单位 | 1.Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Div Phys, Berkeley, CA 94720 USA 2.Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Computat Res Div, Computat Cosmol Ctr, Berkeley, CA 94720 USA 3.Univ Paris 07, Univ Paris 06, CNRS, Lab Phys Nucl & Hautes Energies,IN2P3, F-75252 Paris 05, France 4.Yale Univ, Dept Phys, New Haven, CT 06250 USA 5.Univ Bonn, Inst Phys, D-53115 Bonn, Germany 6.Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA 7.Tsinghua Univ, Tsinghua Ctr Astrophys, Beijing 100084, Peoples R China 8.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China 9.Univ Lyon, F-69622 Lyon, France 10.Univ Lyon 1, F-69622 Villeurbanne, France |
| 推荐引用方式 GB/T 7714 | Kim, A. G.,Thomas, R. C.,Aldering, G.,et al. STANDARDIZING TYPE Ia SUPERNOVA ABSOLUTE MAGNITUDES USING GAUSSIAN PROCESS DATA REGRESSION[J]. ASTROPHYSICAL JOURNAL,2013,766(2). |
| APA | Kim, A. G..,Thomas, R. C..,Aldering, G..,Antilogus, P..,Aragon, C..,...&Wu, C..(2013).STANDARDIZING TYPE Ia SUPERNOVA ABSOLUTE MAGNITUDES USING GAUSSIAN PROCESS DATA REGRESSION.ASTROPHYSICAL JOURNAL,766(2). |
| MLA | Kim, A. G.,et al."STANDARDIZING TYPE Ia SUPERNOVA ABSOLUTE MAGNITUDES USING GAUSSIAN PROCESS DATA REGRESSION".ASTROPHYSICAL JOURNAL 766.2(2013). |
入库方式： OAI收割
来源：国家天文台
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