THE GRAVITATIONAL SHEAR-INTRINSIC ELLIPTICITY CORRELATION FUNCTIONS OF LUMINOUS RED GALAXIES IN OBSERVATION AND IN THE Lambda CDM MODEL
文献类型：期刊论文
| 作者 | Okumura, Teppei; Jing, Y. P. |
| 刊名 | ASTROPHYSICAL JOURNAL LETTERS
 |
| 出版日期 | 2009-03-20 |
| 卷号 | 694期号:1页码:L83-L86 |
| 关键词 | cosmology: observations galaxies: formation galaxies: halos gravitational lensing large-scale structure of universe methods: statistical |
| 英文摘要 | We examine whether the gravitational shear-intrinsic ellipticity (GI) correlation function of the luminous red galaxies (LRGs) can be modeled with the distribution function of a misalignment angle advocated recently by Okumura et al. For this purpose, we have accurately measured the GI correlation for the LRGs in the Data Release 6 (DR6) of the Sloan Digital Sky Survey (SDSS), which confirms the results of Hirata et al. who used the DR4 data. By comparing the GI correlation functions in the simulation and in the observation, we find that the GI correlation can be modeled in the current Lambda CDM model if the misalignment follows a Gaussian distribution with a zero mean and a typical misalignment angle sigma(theta) = 34.9(-2.1)(+1.9) degrees. We also find a correlation between the axis ratios and intrinsic alignments of LRGs. This effect should be taken into account in theoretical modeling of the GI and intrinsic ellipticity-ellipticity correlations for weak lensing surveys. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 类目[WOS] | Astronomy & Astrophysics |
| 研究领域[WOS] | Astronomy & Astrophysics |
| 关键词[WOS] | DIGITAL SKY SURVEY ; WEAK-LENSING SURVEYS ; N-BODY SIMULATIONS ; COSMIC SHEAR ; DATA RELEASE ; ALIGNMENTS ; CONSTRAINTS ; REMOVAL ; CATALOG ; SHAPES |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000264196500018 |
| 源URL | [http://119.78.226.72/handle/331011/19581]  |
| 专题 | 上海天文台_星系宇宙学重点实验室 |
| 作者单位 | Chinese Acad Sci, Shanghai Astron Observ, Key Lab Res Galaxies & Cosmol, Shanghai 200030, Peoples R China |
| 推荐引用方式 GB/T 7714 | Okumura, Teppei,Jing, Y. P.. THE GRAVITATIONAL SHEAR-INTRINSIC ELLIPTICITY CORRELATION FUNCTIONS OF LUMINOUS RED GALAXIES IN OBSERVATION AND IN THE Lambda CDM MODEL[J]. ASTROPHYSICAL JOURNAL LETTERS,2009,694(1):L83-L86. |
| APA | Okumura, Teppei,&Jing, Y. P..(2009).THE GRAVITATIONAL SHEAR-INTRINSIC ELLIPTICITY CORRELATION FUNCTIONS OF LUMINOUS RED GALAXIES IN OBSERVATION AND IN THE Lambda CDM MODEL.ASTROPHYSICAL JOURNAL LETTERS,694(1),L83-L86. |
| MLA | Okumura, Teppei,et al."THE GRAVITATIONAL SHEAR-INTRINSIC ELLIPTICITY CORRELATION FUNCTIONS OF LUMINOUS RED GALAXIES IN OBSERVATION AND IN THE Lambda CDM MODEL".ASTROPHYSICAL JOURNAL LETTERS 694.1(2009):L83-L86. |
入库方式： OAI收割
来源：上海天文台
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