Astronomy and Astrophysics – Astronomy
Scientific paper
Oct 1986
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986mnras.222..611r&link_type=abstract
Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 222, Oct. 1, 1986, p. 611-617.
Astronomy and Astrophysics
Astronomy
10
Covariance, Galactic Clusters, Infrared Spectra, Point Sources, Angular Correlation, Astronomical Catalogs, Infrared Astronomy Satellite, Red Shift
Scientific paper
The angular two-point correlation function for IRAS 60-μm sources have been determined for |b| > 30°, and for b > 30° and b < -30° separately, after exclusion of sources identified with stars and areas affected by cirrus. For θ < 10° a power law with slope similar to that found from optical studies of galaxies is a good fit, w(θ) = (0.12±0.02)θ-0.70±0.17. The amplitude of this correlation function is a factor of 2 or so lower than that for galaxies as a whole. The amplitude of the angular correlation function on angular scales 25° - 35° is significantly higher at |b| > 30° than expected for a Poissonian distribution. The physical scale of this enhanced clustering is 80 - 110(50/H0)Mpc. However, the clustering amplitude on this scale is entirely due to sources at b > 30°: at b < -30° there appears to be significant voiding on this scale. The concept of a universal clustering function therefore breaks down on scales ⪆100(50/H0)Mpc.
Needham G.
Rowan-Robinson Michael
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