File:Dusty Supernovae (MIRI Compass Image) (2023-115).png

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This image of NGC 6946 highlighting two supernovae, SN 2004et and SN 2017eaw, by Webb’s MIRI (Mid-Infrared Camera), shows compass arrows, scale bar, and color key for reference.

Summary

Description	English: This image of NGC 6946 highlighting two supernovae, SN 2004et and SN 2017eaw, by Webb’s MIRI (Mid-Infrared Camera), shows compass arrows, scale bar, and color key for reference. The north and east compass arrows show the orientation of the image on the sky. The scale bar is labeled 2,600 light-years. This image shows invisible mid-infrared wavelengths of light that have been translated into visible-light colors. The color key shows which MIRI filters were used when collecting the light. The color of each filter name is the visible light color used to represent the infrared light that passes through that filter.In these images, blue, green, and red were assigned to Webb’s MIRI data at 10; 11.3, 12.8, and 15.0; and 18 and 21 microns (F1000W; F1130W, F1280W, and F1500W; and F1800W and F2100W, respectively). NASA, ESA, CSA, Ori Fox (STScI), Melissa Shahbandeh (STScI) Alyssa Pagan (STScI)
Date	5 July 2023 (upload date)
Source	Dusty Supernovae (MIRI Compass Image)
Author	Science
Other versions	TIFF version

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This file is in the public domain because it was created by NASA, ESA and CSA. NASA Webb material is copyright-free and may be freely used as in the public domain without fee, on the condition that only NASA, STScI, and/or ESA/CSA is credited as the source of the material. This license does not apply if source material from other organizations is in use.
The material was created for NASA by Space Telescope Science Institute under Contract NAS5-03127. Copyright statement at webbtelescope.org. For material created by the European Space Agency on the esawebb.org site, use the {{ESA-Webb}} tag.

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Author	Space Telescope Science Institute Office of Public Outreach
Image title	Images from NASA’s James Webb Space Telescope’s MIRI (Mid-Infrared Instrument) reveal large amounts of dust within two Type II supernovae, Supernova 2004et (SN2004 et) and Supernova 2017eaw (SN 2017eaw), located 22 million light-years away from Earth in spiral galaxy NGC 6946. The large amounts of dust found around these supernovae support the theory that supernovae played a key role in supplying dust to the early universe.SN 2004et is highlighted in the left panel of this image, and SN 2017ea in the right panel. Webb’s exquisite sensitivity and capability to observe in the mid-infrared allow it to detect the cooler dust that survived the internal shocks reverberating in the aftermath of the dying stars’ explosions. In these images, the bluer colors indicate hotter dust, while red is cooler dust. The hexagonal shape of SN 2004et in Webb’s image is an artifact of the telescope’s mirror and struts — when the bright light of a point source is observed, the light interacts with the sharp edges of the telescope, creating diffraction spikes.The new Webb discovery is the first breakthrough in the study of dust production from supernovae since the detection of newly formed dust in relatively nearby (170,000 light-years) Supernova 1987A.In SN 2004et, researchers using Webb found more than 5,000 Earth masses of dust, rivaling the amount of dust found in SN 1987A. That’s why SN 2004et appears brighter and redder in Webb images. SN 2017eaw is currently hotter, with less dust (bluer in Webb observations), but in 13 years, researchers expect it to appear similar to how SN2004et does now.In these images, blue, green, and red were assigned to Webb’s MIRI data at 10; 11.3, 12.8, and 15.0; and 18 and 21 microns (F1000W; F1130W, F1280W, and F1500W; and F1800W and F2100W, respectively).MIRI was contributed by NASA and ESA, with the instrument designed and built by a consortium of nationally funded European Institutes (the MIRI European Consortium) and NASA’s Jet Propulsion Laboratory, in partnership with the University of Arizona.
Copyright holder	Public
Short title	Dusty Supernovae (MIRI Compass Image)
Credit/Provider	NASA, ESA, CSA, O. Fox and M. Shahbandeh and Alyssa Pagan (STScI)
Source	STScI
Usage terms	https://www.stsci.edu/copyright
Date and time of data generation	5 July 2023
Color space	sRGB
Exif version	2.31
Image width	1,566 px
Image height	1,401 px
Bits per component	8 8 8
Height	1,401 px
Width	1,566 px
Pixel composition	RGB
Number of components	3
Horizontal resolution	72 dpi
Vertical resolution	72 dpi
Contact information	outreach@stsci.edu https://www.stsci.edu/ 3700 San Martin Drive Baltimore, MD, 21218 USA 410-338-4444
Keywords	NGC 6946 SN2004et SN2017eaw
Date and time of digitizing	10:10, 30 August 2022
Software used	Adobe Photoshop 23.5 (Macintosh)
Date metadata was last modified	10:13, 20 June 2023
File change date and time	08:30, 20 June 2023
Unique ID of original document	xmp.did:52df82b0-cfd3-4742-b900-e3826a10ecad
Copyright status	Copyright status not set

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