Talk:Peculiar velocity

Wiki Education Foundation-supported course assignment

This article is or was the subject of a Wiki Education Foundation-supported course assignment. Further details are available on the course page. Student editor(s): Kg5601. Peer reviewers: Dcunning11235.

Above undated message substituted from Template:Dashboard.wikiedu.org assignment by PrimeBOT (talk) 06:18, 17 January 2022 (UTC)

In the real Universe

I'm wondering why we need the 'In the real Universe...' qualifier -- as opposed to what? Wouldn't saying just 'Galaxies are not distributed evenly throughout observable space, but typically found in groups or clusters' do just as well? Also, am I alone in finding a few odd turns of phrase in this article? Greginnj 23:03, 13 February 2006 (UTC)

Velocity versus motion

These terms seem to be used interchangeably here. IMHO they are different. Velocity is how fast something is going, but motion incorporates many other things including vector and I suppose rotation as well. Kortoso (talk) 22:53, 26 October 2016 (UTC)

Notes on Sources

In the Cosmology section, it would probably help to find an article or source describing the grouping of galaxies. Right now, the sources listed at the bottom of the page are essentially definitions. Articles describing the use/purpose of a peculiar velocity will help strengthen this page. It may also be a good idea to put in some mathematical formulas that may apply/help describe what exactly peculiar velocity is in a more quantitative form rather than qualitative. Mgoumas (talk) 01:36, 21 January 2017 (UTC)

Examples of Use

I think it would be useful to mention some ways in which peculiar velocities are important in some cosmological computation. Perhaps how to compare peculiar radial velocities and recessional velocities. Kg5601 (talk) 16:55, 23 January 2017 (UTC)

I agree. Articles and any other formats for broad explanations aren’t ready for prime time without an example. Anyone out there able to give it a shot? — Preceding unsigned comment added by Lisa inCA (talk • contribs) 19:55, 6 June 2021 (UTC)

Additional Sources

• Strauss, Michael A., and Jeffrey A. Willick. "The density and peculiar velocity fields of nearby galaxies." Physics reports 261.5-6 (1995): 271-431. Long review with many citations.
• López-Corredoira, Martín. "Tests and problems of the standard model in Cosmology." Foundations of Physics 47.6 (2017): 711-768.
• Kocevski, Dale D., and Harald Ebeling. "On the origin of the local group’s peculiar velocity." The Astrophysical Journal 645.2 (2006): 1043.
• Kraan‐Korteweg, Renée C. "Cosmological Structures behind the Milky Way." Reviews in Modern Astronomy: From Cosmological Structures to the Milky Way 18 (2005): 48-75.

Johnjbarton (talk) 18:02, 26 December 2023 (UTC)