Contact Us

Thanks for visiting the website. If you want to get in touch you can reach me through Twitter or please fill out the form on the right.

         

123 Street Avenue, City Town, 99999

(123) 555-6789

email@address.com

 

You can set your address, phone number, email and site description in the settings tab.
Link to read me page with more information.

005A1520 copy.jpg

Blog

Filtering by Tag: AGN

"Dark-ages reionization and galaxy formation simulation XIII: AGN quenching of high-redshift star formation in ZF-COSMOS-20115" - Qin et al. (2017)

Alan Duffy

A lovely piece of work by my student Yuxiang Qin, and amazingly rapid turn around of a paper using the DRAGONS series of supercomputer models. The newly discovered galaxy ZF-Cosmos-20115 had some remarkably strange properties that at first glance seemed to bend the laws of galaxy formation to be so large so soon after the Big Bang. This work instead revealed that the rapid stellar mass gain, and the resulting quiescence thereafter, can be naturally explained by significant mergers of smaller objects that created the large stellar nucleus - but this large central bulge itself then inhibited future star formation. This was then tracked back in time in the DRAGONS universe to reveal that the rapidly growing black holes of the earlier universe could indeed by housed in what then becomes these strange quiescent galaxies at later times.

Read More