File:Recently Discovered Dwarf Galaxy Donatiello II (iotw2306a).tiff
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editDescriptionRecently Discovered Dwarf Galaxy Donatiello II (iotw2306a).tiff |
English: The smudge in the center of this image from the Dark Energy Camera (DECam), built by the US Department of Energy, is the elusive dwarf galaxy Donatiello II. It is one of six dwarf galaxies discovered by Italian amateur astronomer Giuseppe Donatiello. Three of them — Donatiello II, III and IV — were tucked away in the DECam images, and are now known to be satellites of the Sculptor Galaxy (NGC 253) (outside the field, to the far right).DECam is an instrument on the Víctor M. Blanco 4-meter Telescope at Cerro Tololo Inter-American Observatory (CTIO), a Program of NSF’s NOIRLab. It combines a wide field of view with high sensitivity, meaning that it can scan large swathes of the night sky and also pick out the faint stars making up neighboring dwarf galaxies such as this one.The Milky Way shares its patch of the Universe with a whole host of small galaxies and star clusters, which help astronomers shed light on the yet-to-be-understood physics of dark matter. |
Date | 8 February 2023 (upload date) |
Source | Recently Discovered Dwarf Galaxy Donatiello II |
Author | Dark Energy Survey/DOE/FNAL/DECam/CTIO/NOIRLab/NSF/AURA/G. Donatiello Image processing: D. de Martin (NSF’s NOIRLab) & M. Zamani (NSF’s NOIRLab) |
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editThis media was created by the National Optical-Infrared Astronomy Research Laboratory (NOIRLab).
Their website states: "Unless specifically noted, the images, videos, and music distributed on the public NOIRLab website, along with the texts of press releases, announcements, images of the week and captions; are licensed under a Creative Commons Attribution 4.0 International License, and may on a non-exclusive basis be reproduced without fee provided the credit is clear and visible." To the uploader: You must provide a link (URL) to the original file and the authorship information if available. | |
This file is licensed under the Creative Commons Attribution 4.0 International license.
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current | 15:31, 15 April 2023 | 2,699 × 1,742 (26.94 MB) | OptimusPrimeBot (talk | contribs) | #Spacemedia - Upload of https://noirlab.edu/public/media/archives/images/original/iotw2306a.tif via Commons:Spacemedia |
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Width | 2,699 px |
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Height | 1,742 px |
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Compression scheme | Uncompressed |
Pixel composition | RGB |
Image data location | 27,854 |
Orientation | Normal |
Number of components | 3 |
Number of rows per strip | 1,742 |
Bytes per compressed strip | 28,209,948 |
Horizontal resolution | 25.4 dpi |
Vertical resolution | 25.4 dpi |
Data arrangement | chunky format |
Software used | Adobe Photoshop 23.5 (Windows) |
File change date and time | 14:36, 3 February 2023 |
Color space | Uncalibrated |