JKCS041 page

Dec 2010, 14th: confirmation

JKCS041 has a fully formed red sequence, in spite the age of the Universe is 3 Gyr only at the cluster redshift, robustly determined to be z=2.2.

You need to upgrade your Flash Player to at
least version 8 to view this video content.

Click here to download the latest version of Flash Player.

You need to upgrade your Flash Player to at
least version 8 to view this video content.

Click here to download the latest version of Flash Player.
Click to walk through the true-color image of the sky around JKCS041
 Click to see how the cluster redshift has been derived using the red sequence (audio in italien)



The paper:A&A 526, A11 (arXiv)
INAF press release (PDF), news, press-release tool-kit (in Italien),
It was featured (among many) by : Le Scienze (Italian version of Scientific American), Le stelle (march issue), Oggiscienza , Il sussidiario ...
INAF Xmas video,




  Oct 2009, 22th: discovery

true color image of the most distant cluster known


The redshift-holder cluster of galaxies JKCS041 at z~2.0 I co-discovered:

see also the CHFT/Terapix/WIRDS image and my home-made image.

The paper:  A&A 507, 147 (arXiv)

Press releases: Chandra, CFHT (local mirror copy),  INAF (in italiano),
also being distributed by Spitzer, Bristol University,  NASA, and A&A
It was featured (among many) by : Nature, New York Times, BBC, Belfast Telegraph, Il messaggero, Focus,
The Dayly Telegraph, Wired, ABC.es, Los Angeles Times,  CBC, Estadao,  The Independent, APOD, youtube, wikipedia, ...