SpARCS1049+56 - Galaxy Cluster churning 800 stars every year.

Q.  In a rare discovery, astronomers have found a massive galaxy bluster where the brightest galaxy is creating close to 800 stars every year. What is the name of this galaxy cluster 9.8 billion light years away from earth?
- Published on 15 Sep 15

a. SpARCS1049+56
b. TpARCS1049+56
c. UpARCS1049+56
d. DpARCS1049+56

ANSWER: SpARCS1049+56
 
The galaxy cluster discovered by NASA’s Hubble Space Telescope is the first to demonstrate that gigantic galaxies at the centre of massive clusters made of stellar fossil old red/dead stars can expand considerably by feeding off gas stolen from remaining galaxies. The new galaxy at the heart of the cluster is churning out new stars at a rapid rate.

There is a phenomena called wet merger when gas rich galaxies collide so that gas is converted into new stars. The latest discovery is one of the first instances of wet merger at the cluster core of the galaxies.

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