Weak redshift discretisation in the Local Group of Galaxies?

Abstract

We discuss the distribution of radial velocities of galaxies belonging to the Local Group. Two independent samples of galaxies as well as several methods of reduction from the heliocentric to the galactocentric radial velocities are explored. We applied the power spectrum analysis using the Hann function as a weighting method, together with the jackknife error estimation. We performed a detailed analysis of this approach. The distribution of galaxy redshifts seems to be non-random. An excess of galaxies with radial velocities of $\sim 24km\cdot s^{-1}$ and $\sim 36km\cdot s^{-1}$ is detected, but the effect is statistically weak. Only one peak for radial velocities of $\sim 24km\cdot s^{-1}$ seems to be confirmed at the confidence level of 95%.

23 pages 7 figures Astronomische Nachrichten accepted

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Cited by in corpus (2)

• Investigation of the orientation of galaxies in clusters: the importance, methods and results of research
• On the investigations of galaxy redshift periodicity