File:NGC 4449 observed by James Webb Space Telescope.jpg
Page contents not supported in other languages.
Tools
Actions
General
In other projects
Appearance
![File:NGC 4449 observed by James Webb Space Telescope.jpg](http://upload.wikimedia.org/wikipedia/commons/thumb/3/3e/NGC_4449_observed_by_James_Webb_Space_Telescope.jpg/800px-NGC_4449_observed_by_James_Webb_Space_Telescope.jpg)
Size of this preview: 800 × 471 pixels. Other resolutions: 320 × 189 pixels | 640 × 377 pixels | 1,024 × 603 pixels | 1,280 × 754 pixels | 2,560 × 1,508 pixels | 5,249 × 3,093 pixels.
Original file (5,249 × 3,093 pixels, file size: 9.95 MB, MIME type: image/jpeg)
![]() | This is a file from the Wikimedia Commons. Information from its description page there is shown below. Commons is a freely licensed media file repository. You can help. |
Summary
DescriptionNGC 4449 observed by James Webb Space Telescope.jpg |
English: Featured in this new image from the NASA/ESA/CSA James Webb Space Telescope is the dwarf galaxy NGC 4449. This galaxy, also known as Caldwell 21, resides roughly 12.5 million light-years away in the constellation Canes Venatici. It is part of the M94 galaxy group, which lies close to the Local Group that hosts our Milky Way.NGC 4449 has been forming stars for several billion years, but it is currently experiencing a period of star formation at a much higher rate than in the past. Such unusually explosive and intense star formation activity is called a starburst and for that reason NGC 4449 is known as a starburst galaxy. In fact, at the current rate of star formation, the gas supply that feeds the production of stars would only last for another billion years or so. Starbursts usually occur in the central regions of galaxies, but NGC 4449 displays more widespread star formation activity, and the very youngest stars are observed both in the nucleus and in streams surrounding the galaxy. It's likely that the current widespread starburst was triggered by interaction or merging with a smaller companion; indeed, astronomers think NGC 4449's star formation has been influenced by interactions with several of its neighbours. NGC 4449 resembles primordial star-forming galaxies which grew by merging with and accreting smaller stellar systems. Since NGC 4449 is close enough to be observed in great detail, it is the ideal laboratory for astronomers to study what may have occurred during galaxy formation and evolution in the early Universe. This new image makes use of data from two of Webb’s instruments: MIRI (Mid-InfraRed Instrument) and NIRCam (Near-InfraRed Camera). Observations in the infrared reveal the galaxy’s creeping tendrils of gas, dust and stars. The bright blue spots reveal countless individual stars, while the bright yellow regions that weave throughout the galaxy indicate concentrations of active stellar nurseries, where new stars are forming. The orange-red areas indicate the distribution of a type of carbon-based compounds known as polycyclic aromatic hydrocarbons (or PAHs) — the MIRI F770W filter is particularly suited to imaging these important molecules. The bright red spots correspond to regions rich in hydrogen that have been ionised by the radiation from the newly formed stars. The diffuse gradient of blue light around the central region shows the distribution of older stars. The compact light-blue regions within the red ionised gas, mostly concentrated in the galaxy’s outer region, show the distribution of young star clusters.NGC 4449 was observed by Webb as part of a series of observations collectively titled Feedback in Emerging extrAgalactic Star clusTers, or FEAST (PI: A. Adamo). Two other targets of the FEAST programme, M51, andM83, were the subjects of previous ESA/Webb Picture of the Month images in 2023. |
Date | |
Source | https://esawebb.org/images/potm2405a/ |
Author | ESA/Webb, NASA & CSA, A. Adamo (Stockholm University) and the FEAST JWST team |
Licensing
![w:en:Creative Commons](https://upload.wikimedia.org/wikipedia/commons/thumb/7/79/CC_some_rights_reserved.svg/90px-CC_some_rights_reserved.svg.png)
![attribution](https://upload.wikimedia.org/wikipedia/commons/thumb/1/11/Cc-by_new_white.svg/24px-Cc-by_new_white.svg.png)
This file is licensed under the Creative Commons Attribution 4.0 International license.
- You are free:
- to share – to copy, distribute and transmit the work
- to remix – to adapt the work
- Under the following conditions:
- attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
Captions
NGC 4449, resembling early star-forming galaxies, observed with Webb's MIRI and NIRCam instruments for detailed study.
Items portrayed in this file
depicts
29 May 2024
image/jpeg
File history
Click on a date/time to view the file as it appeared at that time.
Date/Time | Thumbnail | Dimensions | User | Comment | |
---|---|---|---|---|---|
current | 10:01, 30 May 2024 | ![]() | 5,249 × 3,093 (9.95 MB) | OptimusPrimeBot | #Spacemedia - Upload of https://cdn.esawebb.org/archives/images/large/potm2405a.jpg via Commons:Spacemedia |
20:44, 29 May 2024 | ![]() | 4,000 × 2,357 (6.47 MB) | Cosmicsight | Uploaded a work by ESA/Webb, NASA & CSA, A. Adamo (Stockholm University) and the FEAST JWST team from https://esawebb.org/images/potm2405a/ with UploadWizard |
File usage
The following pages on the English Wikipedia use this file (pages on other projects are not listed):
Global file usage
The following other wikis use this file:
Metadata
This file contains additional information, probably added from the digital camera or scanner used to create or digitize it.
If the file has been modified from its original state, some details may not fully reflect the modified file.
Source | ESA/Webb |
---|---|
Credit/Provider | ESA/Webb, NASA & CSA, A. Adamo (Stockholm University) and the FEAST JWST team |
Short title |
|
Image title |
|
Usage terms |
|
Date and time of data generation | 14:00, 29 May 2024 |
Software used | Adobe Photoshop 25.6 (Windows) |
File change date and time | 22:07, 26 May 2024 |
Date and time of digitizing | 13:25, 10 October 2023 |
Date metadata was last modified | 00:07, 27 May 2024 |
Unique ID of original document | xmp.did:14dc7e77-9e15-fd48-a37f-a669d581da13 |
Keywords | NGC 4449 |
Contact information |
ESA Office, Space Telescope Science Institute, 3700 San Martin Dr Baltimore, MD, 21218 United States |
IIM version | 4 |