The Angular Correlation Function of Faint Galaxies during the Decreasing Correlation Period
نویسندگان
چکیده
منابع مشابه
The Effect of Weak Lensing on the Angular Correlation Function of Faint Galaxies
The angular correlation function ω(θ) of faint galaxies is affected both by nonlinear gravitational evolution and by magnification bias due to gravitational lensing. We compute the resulting ω(θ) for different cosmological models and show how its shape and redshift evolution depend on Ω and Λ. For galaxies at redshift greater than 1 (R magnitude fainter than about 24), magnification bias can si...
متن کاملThe Angular Correlation Function and Hierarchical Moments of ∼ 70000 Faint Galaxies to R = 23 . 5
We investigate the angular correlation function, ω(θ), and third and fourth-order hierarchical moments of a large sample of ∼ 70000 faint galaxies with an estimated completeness limit of R = 23.5. The data, obtained using the new INT Wide Field Camera, consists of 47 red-band CCD images on two widely separated fields of areas 1.01 deg and 0.74 deg. Galaxy clustering is detected with a total sig...
متن کاملMeasuring the Angular Correlation Function for Faint Galaxies in High Galactic Latitude Fields
A photometric survey of faint galaxies in three high Galactic latitude fields (each ∼ 49 arcmin2) with sub-arcsecond seeing is used to study the clustering properties of the faint galaxy population. Multi-color photometry of the galaxies has been obtained to magnitude limits of V ∼ 25, R ∼ 25 and I ∼ 24. Angular correlation analysis is applied to magnitude-limited and color-selected samples of ...
متن کاملDetection of the Angular Correlation of Faint X-ray Sources
We have analyzed a set of deep ROSAT observations with a total sky coverage of 40 square degrees to search for clustering of faint X-ray sources. Using the resulting catalog of discrete X-ray sources, we detect, for the first time in X-rays, a positive correlation on angular scales of 0.5–10. When corrected for a bias due to limited spatial resolution which amplifies the correlation, the observ...
متن کاملInverting the Angular Correlation Function
The two point angular correlation function is an excellent measure of structure in the universe. To extract from it the three dimensional power spectrum, one must invert Limber’s Equation. Here we perform this inversion using a Bayesian prior constraining the smoothness of the power spectrum. Among other virtues, this technique allows for the possibility that the estimates of the angular correl...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Symposium - International Astronomical Union
سال: 1999
ISSN: 0074-1809
DOI: 10.1017/s0074180900132772