Peculiar Velocity
(a) Velocity with respect to the Local Standard of Rest.
(b) A deviation in the velocity of a galaxy from that expected on the basis of a uniform expansion of the Universe. see Hubble law
Pencil Beam ...
peculiar velocity - (n.)
The velocity of a star with respect to the local standard of rest.
penumbra - (n.) ...
Peculiar Velocity: Any velocity a galaxy has with respect to us that is not a Hubble law velocity due to the expansion of space.
The origin of the "peculiar velocity" of 600 km/sec for the Local Group presents an interesting problem.
This requires us to measure the distance to the galaxy directly (thus introducing all the difficulties inherent in the extragalactic distance scale), and then to subtract the Hubble flow to obtain the peculiar velocity vp.
This non-uniform part of the velocity is known as the peculiar velocity and its effect is comparable with the expansion velocity in our local part of the Universe.
Peculiar PeoplePeculiar starPeculiar velocity
PeculiarosoPeculierPecunia non olet
Pecuniary externalityPecunixPed- ...
Distances to nearby galaxies are not in serious dispute, but the role of peculiar velocity on these scales is. Some useful distances are (in Mpc)
Object
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should not to be confused with Dark Energy, Dark Fluid (is an alternative theory to both Dark Matter and Dark Energy and attempts to explain both phenomena in a single framework), or Dark Flow (astrophysical term describing a peculiar velocity of ...
 See also: Solar, Light, Galaxies, Model, Galaxy
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