* Astronomy

Members Login
Username 
 
Password 
    Remember Me  
Home -> Astronomy News -> Cosmology News -> I Zwicky 18
Post Info TOPIC: I Zwicky 18
Blobrana


L

Posts: 131433
Date:
RE: I Zwicky 18
Permalink  
 

The Hubble Space Telescope had previously measured the age of what was thought to be the youngest galaxy ever seen in the universe. By cosmological standards, it would have been is a mere toddler, and seemingly out of place among the grown-up galaxies around it.
Called I Zwicky 18, in the constellation Ursa Major, 45 million light-years away, it was thought to be as young as 500 million years old. Our Milky Way galaxy by contrast would have been over 20 times older or about 12 billion years older, or the typical age of galaxies across the universe. This Irregular Dwarf galaxy was thought to offer a rare glimpse into what the first diminutive galaxies in the early universe may have looked like.

Position (J2000): R.A. 09h 34m 00s.9 Dec. 55° 14' 34".2

__________________
Blobrana


L

Posts: 131433
Date:
Permalink  
 

A bizarre galaxy thought to have started forming stars billions of years after its peers is not such a late bloomer after all, new Hubble observations reveal. Nonetheless, its primordial composition resembling the first galaxies in the universe remains a mystery.

Read more 

__________________
Blobrana


L

Posts: 131433
Date:
Permalink  
 

NASA's Hubble Space Telescope quashed the possibility that what was previously believed to be a toddler galaxy in the nearby universe may actually be considered an adult. Called I Zwicky 18, this galaxy has a youthful appearance that resembles galaxies typically found only in the early universe. Hubble has now found faint, older stars within this galaxy, suggesting that the galaxy may have formed at the same time as most other galaxies.
Hubble data also allowed astronomers for the first time to identify Cepheid variable stars in I Zwicky 18. These flashing stellar mile-markers were used to determine that I Zwicky 18 is 59 million light-years from Earth, almost 10 million light-years more distant than previously believed.

Read more  

Position (J2000):      R.A. 09h 34m 1s.90 Dec. +55° 14' 26 ".00

__________________
Page 1 of 1  sorted by
 
Quick Reply

Please log in to post quick replies.
Home -> Astronomy News -> Cosmology News -> I Zwicky 18


Create your own FREE Forum
Report Abuse 		Powered by ActiveBoard