from the YJKs
YJKs false-colour composite
image of the full UltraVISTA field. The
large blue-white objects with haloes are foreground stars in our own
Way Galaxy. A plethora of other galaxies can be seen including nearby
galaxies which appear large enough on our images to discern their
structures to the most distant galaxies appearing as red dots in this
image. Other features include a group or cluster of galaxies in the
bottom left hand corner. A number of these galaxies are clearly
interacting and a closer view is shown further down the page. Follow this link
to see the full image.
In another region of the image, a number of nearby galaxies can be
seen. Their proximity, combined with the quality of the UltraVISTA data
allows us to see their structure in breathtaking detail, such as the
spiral galaxy in the centre of the image and the galaxy pair to the
right of centre.
In striking contrast, just below the central spiral galaxy is a
concentration of very red objects which represent some of the most
distant galaxies we can observe.
The region of the image shown below highlights the sensitivity of the
UltraVISTA survey, which combines both depth (long exposure) and area,
to large scale structures in the cosmic web. In this cutout, several
concentrations of galaxies (clusters or groups) are seen at a variety
of distances. A group of galaxies at intermediate distance (larger
reddish-white objects in the central part of the image below) are
clearly seen superimposed on a number of concentrations of very red
objects - galaxies in the distant universe.
A closer view of the galaxy group in the top image. A number of these
galaxies appear to be distorted and/or interacting with other galaxies
in the group.
A detailed view of
some smaller scale features in the image
This regions shows an
interesting group of very distant (very red) objects.
These images show
concentrations of objects at various distances (the redder the objects,
the more distant the they are).
These images show some beautiful nearby galaxies including a barred
spiral galaxy (left) and a non-barred spiral galaxy (right). Both of
these spiral galaxies are viewed face-on allowing us to see these
Image credits: UltraVISTA/Terapix/CNRS/CASU
Pages modified by Joanna Holt
email: jholt at strw.leidenuniv.nl
last modified: 20th March 2012