Wikipedia

File:Atmospheric methane of brown dwarfs W1935 and W2220 (NIRSpec) (browndwarfs-aurora).jpg

Original file (15,998 × 10,225 pixels, file size: 10.23 MB, MIME type: image/jpeg)

Summary

Warning The original file is very high-resolution. It might not load properly or could cause your browser to freeze when opened at full size. Open in ZoomViewer
Description
English: Astronomers used the NASA/ESA/CSA James Webb Space Telescope to study 12 cold brown dwarfs. Two of them – W1935 and W2220 – appeared to be near twins of each other in composition, brightness, and temperature. However, W1935 showed emission from methane, as opposed to the anticipated absorption feature that was observed toward W2220. The team speculates that the methane emission may be due to processes generating aurorae.W1935 is the first auroral candidate outside the Solar System with the signature of methane emission. It’s also the coldest auroral candidate outside our solar system, with an effective temperature of about 200 degrees Celsius, over 300 degrees Celsius warmer than Jupiter.In our Solar System the solar wind is a primary contributor to auroral processes, with active moons like Io and Enceladus playing a role for planets like Jupiter and Saturn, respectively. W1935 lacks a companion star entirely, so a stellar wind cannot contribute to the phenomenon. It is yet to be seen whether an active moon might play a role in the methane emission on W1935. These findings were presented at the 243rd meeting of the American Astronomical Society.
Date 9 January 2024, 17:15:00 (upload date)
Source Atmospheric methane of brown dwarfs W1935 and W2220 (NIRSpec)
Author NASA, ESA, CSA, L. Hustak (STScI)
Other versions
  • TIFF version
    TIFF version

Licensing

w:en:Creative Commons
attribution
attribution
 ESA/Webb 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 webbtelescope.org website, use the {{PD-Webb}} tag.
Conditions:
  • The full image or footage credit must be presented in a clear and readable manner to all users, with the wording unaltered (for example: "ESA/Webb"). Web texts should be credited to ESA/Webb (except when used by media). The credit should not be hidden or disassociated from the image footage. Links should be active if the credit is online. See the usage rights Q&A section on the ESA copyright page for guidance.
  • ESA/Webb materials may not be used to state or imply the endorsement by ESA/Webb or any ESA/Webb employee of a commercial product or service.
  • ESA/Webb requests a copy of the product sent to them to be indexed in their archive.
  • If an image shows an identifiable person, using that image for commercial purposes may infringe that person's right of privacy, and separate permission should be obtained from the individual.
  • If images or visuals are changed significantly from the original work (apart from resizing, cropping), we suggest that the changes are mentioned after the credit line. For example "Original image by ESA/Webb (N. Bartmann), warping and recolouring by NN".

Notes:

  • Note that this general permission does not extend to the use of ESA/Webb's logos, which shall remain protected and may not be used or reproduced without prior and individual written consent of ESA/Webb.
  • Also note that music, scientific papers and code on the www.esawebb.org site are not released under this license and can not be used for non-ESA/Webb products.
  • By reproducing ESA/Webb material, in part or in full, the user acknowledges the terms on which such use is permitted.
w:en:Creative Commons
attribution
This file is licensed under the Creative Commons Attribution 4.0 International license.
Attribution: NASA, ESA, CSA, L. Hustak (STScI)
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

Astronomers used the NASA/ESA/CSA James Webb Space Telescope to study 12 cold brown dwarfs. Two of them – W1935 and W2220 – appeared to be near twins of each other in composition, brightness, and temperature.

Items portrayed in this file

depicts

media type

image/jpeg

height

10,225 pixel

width

15,998 pixel

data size

10,723,181 byte

checksum

de4f8e6b543cea7570704bf61978560bf2388bb8

determination method or standard: SHA-1

inception

9 January 2024

pHash checksum

425n06msr0o4agqklvv2jrtov1cthfru237x6y20lqc6hsujvz

determination method or standard: JImagehash perceptual hash

File history

Click on a date/time to view the file as it appeared at that time.

Date/TimeThumbnailDimensionsUserComment
current10:02, 10 January 2024Thumbnail for version as of 10:02, 10 January 202415,998 × 10,225 (10.23 MB)OptimusPrimeBot#Spacemedia - Upload of https://cdn.esawebb.org/archives/images/large/browndwarfs-aurora.jpg via Commons:Spacemedia

The following page uses 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.

Retrieved from "https://en.wikipedia.org/wiki/File:Atmospheric_methane_of_brown_dwarfs_W1935_and_W2220_(NIRSpec)_(browndwarfs-aurora).jpg"