File:TRAPPIST-1 c light curve (trappist1c-1).tiff

From Wikimedia Commons, the free media repository
Jump to navigation Jump to search

Original file (3,840 × 2,161 pixels, file size: 1.47 MB, MIME type: image/tiff)

Captions

Captions

Infrared measurements by the NASA/ESA/CSA James Webb Space Telescope of TRAPPIST-1 c indicate that it is probably not as Venus-like as once imagined.

Summary

[edit]
Description
English: Infrared measurements by the NASA/ESA/CSA James Webb Space Telescope of TRAPPIST-1 c indicate that it is probably not as Venus-like as once imagined. Webb has successfully measured the heat radiating from TRAPPIST-1 c, an exoplanet orbiting a red dwarf star 40 light-years from Earth. With a dayside temperature of about 107 degrees Celsius, it is the coolest rocky planet ever characterised using this method.This light curve shows the change in brightness of the TRAPPIST-1 system as the second planet, TRAPPIST-1 c, moves behind the star. This phenomenon is known as a secondary eclipse.Astronomers used Webb’s Mid-Infrared Instrument (MIRI) to measure the brightness of mid-infrared light. When the planet is beside the star, the light emitted by both the star and the dayside of the planet reach the telescope, and the system appears brighter. When the planet is behind the star, the light emitted by the planet is blocked and only the starlight reaches the telescope, causing the apparent brightness to decrease.Astronomers can subtract the brightness of the star from the combined brightness of the star and planet to calculate how much infrared light is coming from the planet’s dayside. This is then used to calculate the dayside temperature and infer the presence and possible composition of the atmosphere.The graph shows combined data from four separate observations made using MIRI’s F1500W filter, which only allows light with wavelengths ranging from about 13.5 - 16.7 microns to pass through to the detectors. The blue squares are individual brightness measurements. The red circles show measurements that are “binned,” or averaged to make it easier to see the change over time. The white line is the best fit, or model light curve that matches the data most closely. The decrease in brightness during the secondary eclipse is less than 0.05%.The temperature calculated from this observation is 380 +/- 31 kelvins (between 76 and 138 degrees Celsius). TRAPPIST-1 c is the coolest rocky exoplanet ever observed using secondary eclipse photometry.This research was conducted as part of Webb’s General Observers (GO) program 2304, which is one of eight programs from Webb’s first year of science designed to help fully characterise the TRAPPIST-1 system. This coming year, researchers will conduct a follow-up investigation to observe the full orbits of TRAPPIST-1 b and TRAPPIST-1 c. This will make it possible to see how the temperatures change from the day to the night sides of the two planets and will provide further constraints on whether they have atmospheres or not. [Image description: Graphic titled “Rocky Exoplanet TRAPPIST-1 c Secondary Eclipse Light Curve” showing a diagram of a secondary eclipse and a graph of change in brightness over time.]
Date 19 June 2023 (upload date)
Source TRAPPIST-1 c light curve
Author NASA, ESA, CSA, J. Olmsted (STScI), S. Zieba (MPI-A), L. Kreidberg (MPI-A)
Other versions
  • JPG version
    JPG version

Licensing

[edit]
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, J. Olmsted (STScI), S. Zieba (MPI-A), L. Kreidberg (MPI-A)
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.

File history

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

Date/TimeThumbnailDimensionsUserComment
current10:00, 20 June 2023Thumbnail for version as of 10:00, 20 June 20233,840 × 2,161 (1.47 MB)OptimusPrimeBot (talk | contribs)#Spacemedia - Upload of https://esawebb.org/media/archives/images/original/trappist1c-1.tif via Commons:Spacemedia

You cannot overwrite this file.

The following page uses this file:

Metadata

This file contains additional information such as Exif metadata which may have been added by the digital camera, scanner, or software program used to create or digitize it. If the file has been modified from its original state, some details such as the timestamp may not fully reflect those of the original file. The timestamp is only as accurate as the clock in the camera, and it may be completely wrong.

Retrieved from "https://commons.wikimedia.org/w/index.php?title=File:TRAPPIST-1_c_light_curve_(trappist1c-1).tiff&oldid=909529096"