The spatial clustering of faint galaxies
نویسندگان
چکیده
منابع مشابه
Clustering of galaxies at faint magnitudes
Significant uncertainties exist in the measured amplitude of the angular two-point correlation function of galaxies at magnitudes I 26 and fainter. Published results from HST and ground-based galaxy catalogs seem to differ by as much as a factor of 3, and it is not clear whether the correlation amplitude as a function of magnitude increases or decreases in the faintest magnitude bins. In order ...
متن کاملA Constant Clustering Amplitude for Faint Galaxies?
The angular clustering of faint field galaxies is investigated using deep imaging (I ∼ 25) obtained with the 10-m Keck–I telescope. The autocorrelation function is consistent with ω(θ) ∝ θ and, although less steep correlation functions cannot be ruled out with high confidence, we find no compelling evidence for a systematic decrease in the power law index at the faintest magnitude limits. Resul...
متن کاملFaint Galaxy Redshift Survey XII : Clustering of Galaxies
A clustering analysis is performed on two samples of ∼ 600 faint galaxies each, in two widely separated regions of the sky, including the Hubble Deep Field. One of the survey regions is configured so that some galaxy pairs span angular separations of up to 1 deg. The median redshift is zmed ≈ 0.55. Strong clustering is obvious, with every pencil-beam field containing a handful of narrow redshif...
متن کاملStrong Clustering of Faint Galaxies at Small Angular Scales
The 2-point angular correlation function of galaxies, ω(θ) , has been computed on equatorial fields observed with the CTIO 4m prime focus, within a total area of 2.31 deg. In the magnitude range 19 ≤ mR ≤ 21.5, corresponding to < z >≈ 0.35, we find an excess of power in ω(θ) at scales 2 ≤ θ ≤ 6 over what would be expected from an extrapolation of ω(θ) measured at larger θ. The significance of t...
متن کاملSpatial Clustering of Galaxies in Large Datasets
Datasets with tens of millions of galaxies present new challenges for the analysis of spatial clustering. We have built a framework, that integrates a database of object catalogs, tools for creating masks of bad regions, and a fast (NlogN) correlation code. This system has enabled unprecedented efficiency in carrying out the analysis of galaxy clustering in the SDSS catalog. A similar approach ...
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: Monthly Notices of the Royal Astronomical Society
سال: 1994
ISSN: 0035-8711,1365-2966
DOI: 10.1093/mnras/267.3.541