JIVE Wiki

This page is read only. You can view the source, but not change it. Ask your administrator if you think this is wrong.
__In cronological order:__

I made a quick one for **A963**. OII measurements are not ready yet for this cluster, so I only show HI galaxies (blue cubes). The redshift range only covers the main structure, which is composed by 2 peaks in the redshift histogram 
(see the peaks at 0.18 < z < 0.23 here: http://www.jive.nl/dokuwiki/lib/exe/detail.php?id=budhies%3Aoptical%3Awht_spectroscopy%3Aredshifts&media=budhies:optical:wht_spectroscopy:a963_zal_hist.png)

I coloured these peaks with red and green although **NOTE THAT** not all the green points are real members of the second cluster, I coloured all of those in the secondary redshift peak, **this cluster should only be the really central part, which has no HI!**.  The problem is that when I measure the velocity dispersion of the cluster (to later choose cluster members) I measure it higher than what it should be because of its vicinity with the other (big) cluster. So, final memberships will be based on velocity dispersions calculated from iterating in velocity AND space. I've done this already and I get the very central part where there is no HI (i.e. along the "finger").

{{http://www.nottingham.ac.uk/~ppxyj/animation2.gif?450}}

(linked from my personal website: http://www.nottingham.ac.uk/~ppxyj/animation2.gif)


By: Yara Jaffé (13 Jan. 2012)


====== UPDATE: More info added to the plots!  ======
(7 Feb 2012)
In the following animations, I've combined the HI, OII, position, z, and morphology information!

** A963:**
The colours highlight substructures identified in the cluster, while the symbols correlate with morphology: early-type (E/SO) galaxies are plotted in big solid circles, and late-types (S,Irr,and interacting) in solid cubes with spikes. The smaller symbols correspond to galaxies with no morphological classification. Morphologies were defined (visually) from WHT B- and R-band images.

Transparent blue cubes trace the HI content in the galaxies (from deep Westerbork Synthesis Radio Telescope observations). Transparent orange cubes instead highlight the location of galaxies with emission (EW[OII]>4A).

In this case, I plotted all galaxies (WHT and other sources, e.g. from SDSS) because otherwise the connection between clusters was not clear enough. Keep this in mind if you want to know the relative number of star forming vs HI-galaxies! (The galaxies with literature redshifts are also plotted with small circles).

{{budhies:optical:wht_spectroscopy:animation_wmorph.gif}}


====== Structures in A963 ======

A963 has the main cluster A963_1 (red) very close in z to A963_2(blue). Here you can see them separately in 3D:

{{budhies:optical:wht_spectroscopy:environment:animation_A963_1.gif}}

{{budhies:optical:wht_spectroscopy:environment:animation_A963_2.gif}}