How does Ram pressure kill galaxies

[wolram]

Reading this article it states that ram pressure can kill off star formation, can you tell me please what ram pressure is?

https://www.sciencedaily.com/releases/2017/01/170116160620.htm

 

[BvU]

You did google ?

 

[wolram]

You did google ?

From the article:
Galaxies in clusters experience ram pressure as they move through the intracluster medium; it is capable of stripping the galaxy of much of its interstellar gas.[3]
So why are there not( lots) of galaxies showing the same effect of ram pressure?

 

[BvU]

You googled . New question: why not all over the place ? Dunno. The galaxy has to move through the cluster center (the ICM lemma gives no size range).
Glad I joined the thread: now I get notified if an answer on that pops up. @Andy Resnick ?

But I'm sorry we're now no longer on the 'Unread' listing

 

[Andy Resnick]

Glad I joined the thread: now I get notified if an answer on that pops up. @Andy Resnick ?

'Ram pressure' seems to be a fancy name for 'air resistance' (except there's no air in space...):

https://astrobites.org/2013/03/13/ram-pressure-stripping-a-classic-paper/
https://arxiv.org/pdf/physics/0609156v1.pdf

 

[wolram]

Thank you for the replies, but now i am more mystified

 

[wolram]

I found this article on ram striping as a means of causing galaxy extinctions

https://arxiv.org/pdf/1510.04283.pdf

Very interesting so it is the plasma that causes striping.