The power spectrum of the CfA/SSRS UZC galaxy redshift survey

Citation
N. Padmanabhan et al., The power spectrum of the CfA/SSRS UZC galaxy redshift survey, ASTROPHYS J, 550(1), 2001, pp. 52-64
Citations number
54
Categorie Soggetti
Space Sciences
Journal title
ASTROPHYSICAL JOURNAL
ISSN journal
0004637X → ACNP
Volume
550
Issue
1
Year of publication
2001
Part
1
Pages
52 - 64
Database
ISI
SICI code
0004-637X(20010320)550:1<52:TPSOTC>2.0.ZU;2-J
Abstract
The combined CfA2/SSRS redshift catalog has recently been improved and made public. We compute the redshift-space power spectrum of this catalog using the regions at -2.5 degrees less than or equal to delta (1950) less than o r equal to 50 degrees north (8(h) less than or equal to alpha (1950) less t han or equal to 17(h)) and south (20(h) less than or equal to alpha (1950) less than or equal to 3(h), b less than or equal to -13 degrees) of the Gal actic plane, where it is 98% complete down to Zwicky magnitude 15.5 and con tains 13,681 galaxies. Our analysis uses Heavens-Taylor mode expansion, Kar hunen-Loeve data compression, and the Fisher matrix technique to compute qu adratic band power estimates. This allows an exact calculation of window fu nctions, including the integral constraint, in addition to the production o f a power spectrum with uncorrelated error bars. Our results with this larg er data set agree well with those of previous studies. We analyze 101 h(-1) Mpc and 130 h(-1) Mpc volume-limited subsets in addition to the full magni tude-limited sample, and our results are well fitted by, e.g., ACDM models with bias b = 1.2, 1.4, and 1.4, respectively. We estimate the effect of ex tinction using the Schlegel, Finkbeiner, & Davis dust map. Our results are exclusively for the redshift space galaxy power spectrum, so they can only be compared with theoretical predictions if appropriate corrections are mad e for biasing and redshift space distortions.