Selection bias and the Rubin-Ford effect

Details Selection bias and the Rubin-Ford effect Selection bias and the Rubin-Ford effect

Feb 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991mnras.248..444j&link_type=abstract

Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 248, Feb. 1, 1991, p. 444-450.

Astronomy and Astrophysics

Astronomy

7

Bias, Local Group (Astronomy), Spiral Galaxies, Velocity Distribution, Algorithms, Monte Carlo Method, Red Shift

Scientific paper

The Rubin-Ford effect, and more recent cliams of galaxy streaming from the same galaxy sample have been reexamined to investigate the impact of selection effects on these results. A Monte Carlo analysis was applied to simulate the selection procedure used to obtain this sample, and a strong bias was identified, resulting in apparent velocity flows at 600-800 km/s. Thus the Rubin-Ford effect and the associated galaxy streaming are spurious effects resulting from the method of sample selection.

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