WEAVE spectrograph uncovers galaxy shock in Stephan's Quintet

[AVAO]

WEAVE spectrograph uncovers dual nature of galaxy shock in Stephan's Quintet
phys.org | | 2024 Nov 24

WEAVE decomposition of gas in Stephan's Quintet, overlaid on a JWST image. The red highlights gas shocked by the collision, while green and blue shows star-forming regions. The purple areas represent bubbles with an unknown origin. The black contours show neutral Hydrogen, and its location relative to the shocked gas (in red) suggests that is where it comes from. Credit: Arnaudova et al.

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Using the set of first-light observations from the new William Herschel Telescope Enhanced Area Velocity Explorer (WEAVE) wide-field spectrograph, a team of more than 50 astronomers, led by Dr. Marina Arnaudova at the University of Hertfordshire, has presented the first WEAVE scientific results on Stephan's Quintet in the Monthly Notices of the Royal Astronomical Society.

Dynamical activity in this galaxy group has now been reawakened by NGC 7318b, a galaxy smashing through it at an incredible speed of over 2 million miles per hour (3.2 million kilometers per hour), leading to an immensely powerful shock, much like a sonic boom from a jet fighter.

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BSN4Y Jac

[AVAO]

WEAVE spectrograph uncovers dual nature of galaxy shock in Stephan's Quintet
phys.org | | 2024 Nov 24

WEAVE decomposition of gas in Stephan's Quintet, overlaid on a JWST image. The red highlights gas shocked by the collision, while green and blue shows star-forming regions. The purple areas represent bubbles with an unknown origin. The black contours show neutral Hydrogen, and its location relative to the shocked gas (in red) suggests that is where it comes from. Credit: Arnaudova et al.

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Using the set of first-light observations from the new William Herschel Telescope Enhanced Area Velocity Explorer (WEAVE) wide-field spectrograph, a team of more than 50 astronomers, led by Dr. Marina Arnaudova at the University of Hertfordshire, has presented the first WEAVE scientific results on Stephan's Quintet in the Monthly Notices of the Royal Astronomical Society.

Dynamical activity in this galaxy group has now been reawakened by NGC 7318b, a galaxy smashing through it at an incredible speed of over 2 million miles per hour (3.2 million kilometers per hour), leading to an immensely powerful shock, much like a sonic boom from a jet fighter.

more
paper

BSN4Y Jac

JWST versus WEAVE

Click to view full size image 1 or image 2

JWST versus VLA 1.7 GHz

Click to view full size image 1 or image 2

Original data: NASA/ESA/CSA (JWST/WEAVE/VLA)

biggg: https://live.staticflickr.com/65535/522 ... 1c83_o.jpg