File:This is no supermodel spiral.jpg
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Summary
DescriptionThis is no supermodel spiral.jpg |
English: The NASA/ESA Hubble Space Telescope observes some of the most beautiful galaxies in our skies— spirals sparkling with bright stellar nurseries (heic1403), violent duos ripping gas and stars away from one another as they tangle together (heic1311), and ethereal irregular galaxies that hang like flocks of birds suspended in the blackness of space (heic1114, heic1207). However, galaxies, like humans, are not all supermodels. This little spiral, known as NGC 4102, has a different kind of appeal, with its tightly-wound spiral arms and understated, but charming, appearance. NGC 4102 lies in the northern constellation of Ursa Major (The Great Bear). It contains what is known as a LINER, orlow-ionization nuclear emission-line region, meaning that its nucleus emits particular types of radiation — specifically, emission from weakly-ionised or neutral atoms of certain elements. Even in this sense, NGC 4102 is not special; around one third of all nearby galaxies are thought to be LINERgalaxies. Many LINER galaxies also contain intense regions of star formation. This is thought to be intrinsically linked to their centres but just why is still a mystery for astronomers — either the starbursts pour fuel inwards to fuel the LINERs, or this active central region triggers the starbursts. NGC 4102 does indeed contain a starburst region towards its centre, where stars are being created at a rate much more furious than in a normal galaxy. This star formation is taking place within a small rotating disc, around 1000 light-years in diameter and with a mass some three billion timesthe mass of the Sun. This image uses infrared and visible observations taken using Hubble’s Wide Field Planetary Camera 2. A version of this image was submitted to the Hubble's Hidden Treasures image processing competition by contestant Renaud Houdinet. A team of astronomers led by Stephen Smarttof Queen's University Belfast, the Principal Investigator for the observations making up this image, have spent the last 15 years searching for the progenitor stars of supernovae in galaxy images like this. A recent review article explores some of the results from such studies. Link Renaud Houdinet’s Hidden Treasures entry on Flickr |
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Source | http://www.spacetelescope.org/images/potw1448a/ |
Author |
ESA/Hubble, NASA and S. Smartt (Queen's University Belfast) Acknowledgement: Renaud Houdinet |
Licensing
ESA/Hubble images, videos and web texts are released by the ESA under the Creative Commons Attribution 4.0 International license and may on a non-exclusive basis be reproduced without fee provided they are clearly and visibly credited. Detailed conditions are below; see the ESA copyright statement for full information. For images created by NASA or on the hubblesite.org website, or for ESA/Hubble images on the esahubble.org site before 2009, use the {{PD-Hubble}} tag.
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This file is licensed under the Creative Commons Attribution 4.0 International license.
Attribution: ESA/Hubble
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1 December 2014
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Date/Time | Dimensions | User | Comment | |
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current | 14:47, 1 December 2014 | 1,280 × 1,051 (316 KB) | Jmencisom | User created page with UploadWizard |
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Image title |
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Date and time of data generation | 10:00, 1 December 2014 |
Software used | Adobe Photoshop CC (Windows) |
Copyright status | Copyright status not set |
Unique ID of original document | xmp.did:064678ef-a61b-cf4f-a27e-19378d1aa00a |
Credit/Provider | ESA/Hubble, NASA and S. Smartt (Queen's University Belfast) Acknowledgement: Renaud Houdinet |
Source | ESA/Hubble |
Usage terms |
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Contact information |
http://www.spacetelescope.org/ Karl-Schwarzschild-Strasse 2 Garching bei München, , D-85748 Germany |
Short title |
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Keywords | NGC 4102 |
IIM version | 4 |