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Hubble portrays a dusty spiral galaxy

Date:
September 30, 2012
Source:
NASA
Summary:
The NASA/ESA Hubble Space Telescope has provided another outstanding image of a nearby galaxy -- NGC 4183, seen with a beautiful backdrop of distant galaxies and nearby stars. Located about 55 million light-years from the sun and spanning about eighty thousand light-years, NGC 4183 is a little smaller than the Milky Way. This galaxy, which belongs to the Ursa Major Group, lies in the northern constellation of Canes Venatici (The Hunting Dogs).

Galaxy NGC 4183.
Credit: ESA/Hubble & NASA; Acknowledgement: Luca Limatola

The NASA/ESA Hubble Space Telescope has provided another outstanding image of a nearby galaxy -- NGC 4183, seen with a beautiful backdrop of distant galaxies and nearby stars. Located about 55 million light-years from the sun and spanning about eighty thousand light-years, NGC 4183 is a little smaller than the Milky Way. This galaxy, which belongs to the Ursa Major Group, lies in the northern constellation of Canes Venatici (The Hunting Dogs).

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NGC 4183 is a spiral galaxy with a faint core and an open spiral structure. Unfortunately, this galaxy is viewed edge-on from Earth, and we cannot fully appreciate its spiral arms. But we can admire its galactic disk.

The disks of galaxies are mainly composed of gas, dust and stars. There is evidence of dust over the galactic plane, visible as dark intricate filaments that block the visible light from the core of the galaxy. In addition, recent studies suggest that this galaxy may have a bar structure. Galactic bars are thought to act as a mechanism that channels gas from the spiral arms to the center, enhancing star formation, which is typically more pronounced in the spiral arms than in the bulge of the galaxy.

British astronomer William Herschel first observed NGC 4183 on 14 January 1778.

This picture was created from visible and infrared images taken with the Wide Field Channel of the Advanced Camera for Surveys. The field of view is approximately 3.4 arcminutes wide.

This image uses data identified by Luca Limatola in the Hubble's Hidden Treasures image processing competition.


Story Source:

The above story is based on materials provided by NASA. Note: Materials may be edited for content and length.


Cite This Page:

NASA. "Hubble portrays a dusty spiral galaxy." ScienceDaily. ScienceDaily, 30 September 2012. <www.sciencedaily.com/releases/2012/09/120930160749.htm>.
NASA. (2012, September 30). Hubble portrays a dusty spiral galaxy. ScienceDaily. Retrieved March 28, 2015 from www.sciencedaily.com/releases/2012/09/120930160749.htm
NASA. "Hubble portrays a dusty spiral galaxy." ScienceDaily. www.sciencedaily.com/releases/2012/09/120930160749.htm (accessed March 28, 2015).

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