AçıklamaPandora's Cluster – Abell 2744.jpg	English: Abell 2744, nicknamed Pandora's Cluster. The galaxies in the cluster make up less than five percent of its mass. The gas (around 20 percent) is so hot that it shines only in X-rays (coloured red in this image). The distribution of invisible dark matter (making up around 75 percent of the cluster's mass) is coloured here in blue.
Tarih	22 Haziran 2011
Kaynak	HubbleSite This media was produced by the European Southern Observatory (ESO), under the identifier eso1120a Bu etiket, ekli çalışmanın telif hakkı durumunu göstermez. Normal bir telif hakkı etiketi hâlâ gereklidir. Commons:Lisanslama sayfasına bakın.
Yazar	NASA, ESA, J. Merten (Institute for Theoretical Astrophysics, Heidelberg/Astronomical Observatory of Bologna), and D. Coe (STScI)
Diğer sürümler	This image is a JPEG version of the original TIFF image at File: X-rays, dark matter and galaxies in cluster Abell 2744.tif. This JPEG version should be used when displaying the file from Commons, as the MediaWiki software is unable to create a thumbnail or preview of the original TIFF file, because it is larger than 1000 megapixels. However, any edits to the image should be based on the original TIFF version in order to prevent generation loss, and both versions should be updated. Do not make edits based on this version. Hizmetliler: Although this file is a scaled-down duplicate, it should not be deleted!

The image is a composite of separate exposures made by Hubble Space Telescope ACS detectors, the ESO's Very Large Telescope (VLT), and the Chandra ACIS detector. Hubble provides the central, most detailed part of the image, while the VLT, which has a wider field of view, provides the outer parts of the image. A map of the cluster's dark matter distribution has also been applied to the image. The color results from assigning different hues (colors) to each monochromatic image. In this case, the assigned colors are: Dark Matter Map; HST F438W (B); VLT B blue HST F606W (V); VLT R green Chandra X-ray data; HST F814W (I); VLT I red

The image was created from Hubble data from proposal 11689: R. Dupke (University of Michigan), N. Benitez (Astrophysical Institute of Andalucía, Spain), J. Krick (California Institute of Technology), B. Bregman (University of Michigan), D. Coe (STScI), L. Sodre (University of Sao Paulo), T. Broadhurst (Tel Aviv University, Wise Observatory), and R. Bernstein (University of California, Santa Cruz).

The science team is led by J. Merten (Institute for Theoretical Astrophysics, Heidelberg/Astronomical Observatory of Bologna). Instrument: ACS/WFC Exposure Date(s): October 27-30, 2009 Exposure Time: 12 hours Filters: F438W (B), F606W (V), and F814W (I)

This file is in the public domain because it was created by NASA and ESA. NASA Hubble material (and ESA Hubble material prior to 2009) is copyright-free and may be freely used as in the public domain without fee, on the condition that only NASA, STScI, and/or ESA is credited as the source of the material. This license does not apply if ESA material created after 2008 or source material from other organizations is in use. The material was created for NASA by Space Telescope Science Institute under Contract NAS5-26555, or for ESA by the Hubble European Space Agency Information Centre. Copyright statement at hubblesite.org or 2008 copyright statement at spacetelescope.org. For material created by the European Space Agency on the spacetelescope.org site since 2009, use the {{ESA-Hubble}} tag.

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