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Summary
DescriptionNGC 7496 (MIRI Image) (weic2306c).jpeg |
English: Scientists are getting their first look with the NASA/ESA/CSA James Webb Space Telescope’s powerful resolution at how the formation of young stars influences the evolution of nearby galaxies. The spiral arms of NGC 7496, one of a total of 19 galaxies targeted for study by the Physics at High Angular resolution in Nearby Galaxies (PHANGS) collaboration, are filled with cavernous bubbles and shells overlapping one another in this image from Webb’s Mid-Infrared Instrument (MIRI). These filaments and hollow cavities are evidence of young stars releasing energy and, in some cases, blowing out the gas and dust of the interstellar medium they plough into.Until Webb’s high resolution at infrared wavelengths came along, stars at the earliest point of their lifecycle in nearby galaxies like NGC 7496 remained obscured by gas and dust. Webb’s specific wavelength coverage (7.7 and 11.3 microns), allows for the detection of polycyclic aromatic hydrocarbons, which play a critical role in the formation of stars and planets. In Webb’s MIRI image, these are mostly found within the main dust lanes in the spiral arms.In their analysis of the new data from Webb, scientists were able to identify nearly 60 new, undiscovered embedded cluster candidates in NGC 7496. These newly identified clusters could be among the youngest stars in the entire galaxy.At the centre of NGC 7496, a barred spiral galaxy, is an active galactic nucleus (AGN). An AGN is a supermassive black hole that is emitting jets and winds. The AGN glows brightly at the centre of this Webb image. Additionally, Webb’s extreme sensitivity also picks up various background galaxies,far distant from NGC 7496, which appear green or red in some instances.NGC 7496 lies over 24 million light-years away from Earth in the constellation Grus. In this image of NGC 7496, blue, green, and red were assigned to Webb’s MIRI data at 7.7, 10 and 11.3, and 21 microns (the F770W, F1000W and F1130W, and F2100W filters, respectively).MIRI was contributed by ESA and NASA, 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. [Image Description: A large galaxy takes up the entirety of the image. Six reddish diffraction spikes extend from the core. The spiral arms of the galaxy outstretch to the upper left and the lower right. The arms are wispy and highlight filaments of dust around cavernous black bubbles. That dust in the outer rings contains diffuse dots that are navy blue, pinkish, reddish, and white.] |
Date | 16 February 2023 (upload date) |
Source | NGC 7496 (MIRI Image) |
Author | NASA, ESA, CSA, and J. Lee (NOIRLab), A. Pagan (STScI) |
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Licensing
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Author | Space Telescope Science Institute Office of Public Outreach |
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Credit/Provider | NASA, ESA, CSA, and J. Lee (NOIRLab), A. Pagan (STScI) |
Source | ESA/Webb |
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Image title |
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Date and time of data generation | 17:00, 16 February 2023 |
JPEG file comment | Scientists are getting their first look with NASA’s James Webb Space Telescope’s powerful resolution how the formation of young stars influences the evolution of nearby galaxies. The spiral arms of NGC 7496, one of a total of 19 galaxies targeted for study by the Physics at High Angular resolution in Nearby Galaxies (PHANGS) collaboration, are filled with cavernous bubbles and shells overlapping one another in this image from Webb’s Mid-Infrared Instrument (MIRI). These filaments and hollow cavities are evidence of young stars releasing energy and, in some cases, blowing out the gas and dust of the interstellar medium they plow into.
Until Webb’s high resolution at infrared wavelengths came along, stars at the earliest point of the lifecycle in nearby galaxies like NGC 7496 remained obscured by gas and dust. Webb’s specific wavelength coverage (7.7 and 11.3 microns), allow for the detection of polycyclic aromatic hydrocarbons, which play a critical role in the formation of stars and planets. In Webb’s MIRI image, these are mostly found within the main dust lanes in the spiral arms. In their analysis of the new data from Webb, scientists were able to identify nearly 60 new, undiscovered embedded cluster candidates in NGC 7496. These newly identified clusters could be among the youngest stars in the entire galaxy. At the center of NGC 7496, a barred spiral galaxy, is an active galactic nucleus (AGN). AGN is another way to refer to an active supermassive black hole that is emitting jets and winds. This glows quite brightly at the center of the Webb image. Additionally, Webb’s extreme sensitivity also picks up various background galaxies to NGC 7496, which appear green or red in some instances. NGC 7496 lies over 24 million years away from Earth in the constellation Grus. MIRI was contributed by ESA and NASA, 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. |
Software used | Adobe Photoshop 24.1 (Macintosh) |
File change date and time | 15:24, 13 February 2023 |
Date and time of digitizing | 07:13, 20 January 2023 |
Date metadata was last modified | 02:48, 14 February 2023 |
Unique ID of original document | xmp.did:6ad29243-175d-4315-9f44-68c4f4b4f0ec |
Copyright status | Copyright status not set |
Keywords | NGC 7496 |
Contact information | outreach@stsci.edu
ESA Office, Space Telescope Science Institute, 3700 San Martin Dr Baltimore, MD, 21218 United States |
IIM version | 4 |