File:NGC 3359 – Meet Me at the Bar (gemini0901a).tiff
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[edit]DescriptionNGC 3359 – Meet Me at the Bar (gemini0901a).tiff |
English: This image of NGC 3359 was obtained with the Gemini Multi-Object Spectrograph (GMOS) on the Gemini North telescope on Mauna Kea in Hawai‘i. The circular pinwheel shape with the easily recognized spiral arm structure makes it straightforward to classify this object as a spiral galaxy, however, it is the presence of the straight ‘bar’ in the center of the galaxy that distinguishes NGC 3359 from many other spirals. Recent research has shown that the central bar in this galaxy is relatively young; it is only 500 million years old (as compared to the several billion year age of the galaxy). Astronomers are still trying to understand how large features like the bar form and how long they last as a galaxy like NGC 3359 evolves. In addition to its central bar NGC 3359 is known for its many regions of star formation (so-called [H II] regions) that are visible across its disk. In this image the [H II] regions are seen as the light red patches visible throughout the image. There are approximately 100 [H II] regions in NGC 3359 which makes it an example of intense star formation. An example of an [H II] region in our own galaxy, where many tens of young stars have recently been born, is the famous Orion Nebula. The color-composite image is actually made of four individual images taken in the g (blue), r (green), i (orange) and h-alpha (red) filters. NGC 3359 is a moderately large object in the sky. The angular size of this image is 4.3 x 5.3 arcminutes. It is a relatively close example of a spiral galaxy at a distance of roughly 49 million light-years. NGC 3359 is located in the constellation Ursa Major and has an apparent magnitude of 10.5. It is easily visible in amateur-sized portable telescopes. |
Date | 1 April 2009 (upload date) |
Source | NGC 3359 – Meet Me at the Bar |
Author | International Gemini Observatory |
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[edit]This 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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Width | 1,749 px |
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Height | 2,171 px |
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Compression scheme | LZW |
Pixel composition | RGB |
Orientation | Normal |
Number of components | 3 |
Number of rows per strip | 24 |
Horizontal resolution | 72 dpi |
Vertical resolution | 72 dpi |
Data arrangement | chunky format |
Software used | Adobe Photoshop 21.1 (Windows) |
File change date and time | 01:13, 2 February 2021 |
Color space | Uncalibrated |