Image distortion near galaxies - Dwarfs or lensing?

Details Image distortion near galaxies - Dwarfs or lensing? Image distortion near galaxies - Dwarfs or lensing?

Aug 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985natur.316..799t&link_type=abstract

Nature (ISSN 0028-0836), vol. 316, Aug. 29, 1985, p. 799, 800.

Mathematics

7

Dwarf Galaxies, Gravitational Lenses, Image Resolution, Mass Distribution, Signal Distortion, Cross Correlation, Error Analysis, Functions (Mathematics), Image Processing, Luminosity

Scientific paper

Direct measurements of the effect of large numbers of foreground dwarf galaxies on the evaluation of field galaxy mass distribution by galaxy-galaxy gravitational lensing are presented. A cross-correlation using the estimated luminosity functions and absolute magnitudes of Phillipps (1985) clearly reveals clustering of foreground dwarf galaxies, with an amplitude slightly less than that given by a previous simulation. This effect does not change previous conclusions regarding the average galaxy mass distribution.

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