peculiar motion

peculiar motion

1. The motion of an individual star relative to a group of neighboring stars.
2. That part of the proper motion of a star that results from its actual movement in space; it is the star's proper motion after elimination of the effects of the Sun's motion.
3. (peculiar velocity; streaming motion) A deviation of a galaxy or cluster of galaxies from the Hubble flow due to its real motion under local gravitational effects, such as the motion of the Local Group due to the Great Attractor.
References in classic literature ?
I never look at him at all; but if ever I get a chance of a dark night, and he standing hard by the bulwarks, and no one by; look down there, Flask --pointing into the sea with a peculiar motion of both hands -- Aye, will I!
"Their peculiar motion makes it hard to write a formula for overall gravitational growth." However, says Reid, "We have a very good model for what these distortions look like.
Really, p changes with the lapse of time in view of peculiar motion of cosmic bodies; however, the corresponding velocities are small enough at the considered nonrelativistic matter dominated and dark energy dominated stages of the Universe evolution.
Others prove weaker, like the following excerpt on the Sun's peculiar motion: "As it orbits around the Galaxy, the Sun bobs up and down through the Galactic midplane--like a fiery porpoise in a circulating school of 100 billion other blazing porpoises." Charred aquatic mammals aside, the authors get an A for effort, and their plethora of explanations will be appreciated by the uninitiated.
The Milky Way's peculiar motion along the Virgo-Fornax axis will be established.
"But, in particular with this survey, we are able to analyse the very individual motions of the galaxies on top of that - what we call the peculiar motions of the galaxies," he explained.
"The 'Self of selves,'" he wrote, "when carefully examined, is found to consist mainly of the collection of these peculiar motions in the head or between the head and throat." It is difficult for me to follow James in isolating the spot where my own inner voice lives.