Hubble image archive
Hubble WFC3 Image of Core of RCS2 032727-132623 and Reconstruction of RCSGA 032727-132609
This graphic shows a reconstruction (at lower left) of the brightest galaxy whose image has been distorted by the gravity of a distant galaxy cluster. The small rectangle in the center shows the location of the background galaxy on the sky if the intervening galaxy cluster were n...
- Date
- Jan 1, 2012
- Mission
- Hubble Space Telescope
- Archive ID
- hubblesite-images-2012-08-2979-image
This graphic shows a reconstruction (at lower left) of the brightest galaxy whose image has been distorted by the gravity of a distant galaxy cluster. The small rectangle in the center shows the location of the background galaxy on the sky if the intervening galaxy cluster were not there. The rounded outlines show distinct, distorted images of the background galaxy resulting from lensing by the mass in the cluster. The image at lower left is a reconstruction of what the lensed galaxy would look like in the absence of the cluster, based on a model of the cluster's mass distribution derived from studying the distorted galaxy images.
Credits
Illustration: NASA, ESA, and Z. Levay (STScI);Science: NASA, ESA, J. Rigby (NASA Goddard Space Flight Center), K. Sharon (Kavli Institute for Cosmological Physics, University of Chicago), and M. Gladders and E. Wuyts (University of Chicago)
Image Details
| About The Object | |
|---|---|
| Object Name | RCS2 032727-132623, RCSGA 032727-132609 |
| Object Description | Galaxy Cluster and Gravitational Lens System |
| R.A. Position | 03h 27m 27.09s |
| Dec. Position | -13° 26' 22.8" |
| Constellation | Eridanus |
| Distance | z = 1.701 (background galaxy RCSGA 032727-132609) and z = 0.564 (foreground galaxy cluster RCS2 032727-132623) |
| About The Data | |
| Data Description | The image was created from Hubble data from proposal : J. Rigby (NASA Goddard Space Flight Center) et al. |
| Instrument | HST>WFC3/UVIS and HST>WFC3/IR |
| Exposure Dates | March 1, 2011, Exposure Time: 2.7 hours |
| Filters | WFC3/UVIS: F390W (U), F606W (V), and F814W (I) WFC3/IR: F098M (blue grism), F125W (J), F132N (Paschen β), and F160W (H) |
| About The Image | |
| Color Info | This image is a composite of separate exposures acquired by the WFC3 instrument on HST. Several filters were used to sample broad wavelength ranges. The color results from assigning different hues (colors) to each monochromatic (grayscale) image associated with an individual filter. In this case, the assigned colors are: Blue: F390W (U) + F606W (V) Green: F814W (I) Red: F098M (blue grism) + F125W (J) + F132N (Paschen β) + F160W (H) |
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