Most distant galaxy cluster revealed
 

[url]http://www.newscientist.com/article.ns?id=dn7087[/url]

The people of the paper says that the cluster lies at a distance of 9 Gly, but they don't indicate what kind of distance. I suppose that they mean comoving distance, but I'm not sure. Anybody knows the redshift of this cluster? I could transform the redshift to comoving distance, that is the distance that I like more

The word on the street....
Red shift 1.4

blobrana, you're the man
Ok introducing this cipher in Ned Wright's calculator
[url]http://www.astro.ucla.edu/~wright/CosmoCalc.html[/url]
for a universe with H=71, Omega-matter=0.27, Omega-Lambda=0.73, flat, it gives me a comoving distance of 13.7 Gly
It gives also two other distances (luminosity and angular size) that don't mach either with the 9 Gly of the article.
Ummmm. I'm always suspicious of distances given in popular articles....

Hum,

<font color=pink>< must bookmark ></font>
neat link...

Hum did you use `flat`?
the `light travel time` is shown as 9.061 Gyr.
While the `comoving radial distance` is shown as 13.728 Gly.

( the links explain the difference)

<font color=pink>< /must bookmark ></font>

yeah comoving radial distance is the same as comoving distance. Perhaps they were mentioning the light travel time in the article, though is a kind of measure rarely used in articles. Well
I used flat. The Universe is flat. Omega=1.

Definitely the article is wrong. The most distant galaxy cluster was discovered a couple of weeks ago and has a redshift z=5.7
[url]http://www.universetoday.com/am/publish/galaxy_clusters_early.html?1722005[/url]

Hum,
yeah,
i think it the main point with the new cluster was that they were `highly structured` or `highly evolved` after only a few billion years. The galaxies in the cluster are red and elliptical, which means that they are quite `old`...

A puzzle indeed.