Analysis unlocks supernova stardust secrets and techniques


Cassiopeia A is a supernova remnant within the constellation Cassiopeia. Credit score: NASA/CXC/SAO

Curtin College-led analysis has found a uncommon mud particle trapped in an historical extra-terrestrial meteorite that was fashioned by a star apart from our solar.

The analysis titled “Atomic-scale Component and Isotopic Investigation of 25Mg-rich Stardust from an H-burning Supernova” seems in Astrophysical Journal.

The invention was made by lead creator Dr. Nicole Nevill and colleagues throughout her Ph.D. research at Curtin, now working on the Lunar and Planetary Science Institute in collaboration with NASA’s Johnson House Middle.

Meteorites are largely made up of fabric that fashioned in our photo voltaic system and may also include tiny particles which originate from stars born lengthy earlier than our solar.

Clues that these particles, generally known as presolar grains, are relics from different stars are discovered by analyzing the several types of parts inside them.

Dr. Nevill used a method known as atom probe tomography to research the particle and reconstruct the chemistry on an atomic scale, accessing the hidden info inside.

“These particles are like celestial time capsules, offering a snapshot into the lifetime of their guardian star,” Dr. Nevill stated.

“Materials created in our photo voltaic system have predictable ratios of isotopes—variants of parts with totally different numbers of neutrons. The particle that we analyzed has a ratio of magnesium isotopes that’s distinct from something in our photo voltaic system.

“The outcomes had been actually off the charts. Probably the most excessive magnesium isotopic ratio from earlier research of presolar grains was about 1,200. The grain in our research has a price of three,025, which is the very best ever found.

“This exceptionally excessive isotopic ratio can solely be defined by formation in a just lately found kind of star—a hydrogen burning supernova.”

Co-author Dr. David Saxey, from the John de Laeter Centre at Curtin stated the analysis is breaking new floor in how we perceive the universe, pushing the boundaries of each analytical methods and astrophysical fashions.

“The atom probe has given us a complete degree of element that we’ve not been capable of entry in earlier research,” Dr. Saxey stated.

“Hydrogen burning supernova is a kind of star that has solely been found just lately, across the similar time as we had been analyzing the tiny mud particle. The usage of the atom probe on this research, offers a brand new degree of element serving to us perceive how these stars fashioned.”

Co-author Professor Phil Bland, from Curtin’s Faculty of Earth and Planetary Sciences stated new discoveries from learning uncommon particles in meteorites are enabling us to achieve insights into cosmic occasions past our photo voltaic system.

“It’s merely superb to have the ability to hyperlink atomic-scale measurements within the lab to a just lately found kind of star.”

Extra info:
Atomic-scale Component and Isotopic Investigation of 25Mg-rich Stardust from an H-burning Supernova, The Astrophysical Journal (2024). DOI: 10.3847/1538-4357/ad2996

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Analysis unlocks supernova stardust secrets and techniques (2024, March 27)
retrieved 28 March 2024

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