* Astronomy

Members Login
Username 
 
Password 
    Remember Me  
Home -> Astronomy News -> Cosmology News -> Compact Galaxies
Post Info TOPIC: Compact Galaxies
Blobrana


L

Posts: 131433
Date:
RE: Compact Galaxies
Permalink  
 

Seeing the compact sizes of these galaxies is a puzzle. No massive galaxy at this distance has ever been observed to be so compact. These galaxies would have to change a lot over 11 billion years, growing five times bigger. They could get larger by colliding with other galaxies, but such collisions may not be the complete answer. It is not yet clear how they would build themselves up to become the large galaxies we see today - Pieter G. van Dokkum of Yale University in New Haven, Connecticut, USA, who led the study.

Read more

__________________
Blobrana


L

Posts: 131433
Date:
Permalink  
 

Imagine receiving an announcement touting the birth of a baby 20 inches long and weighing 180 pounds. After reading this puzzling message, you would immediately think the baby's weight was a misprint.
Astronomers looking at galaxies in the universe's distant past received a similar perplexing announcement when they found nine young, compact galaxies, each weighing in at 200 billion times the mass of the Sun. The galaxies, each only 5,000 light-years across, are a fraction of the size of today's grownup galaxies but contain approximately the same number of stars. Each galaxy could fit inside the central hub of our Milky Way Galaxy.

Read more

-- Edited by Blobrana at 18:16, 2008-04-29

__________________
Page 1 of 1  sorted by
Quick Reply

Please log in to post quick replies.
Home -> Astronomy News -> Cosmology News -> Compact Galaxies


Create your own FREE Forum
Report Abuse 		Powered by ActiveBoard