Molecular filament shielded young solar system from supernova

Artist’s impression of the blast wave from a supernova colliding with the molecular cloud filament where the Sun is forming.
Credit: NAOJ

Isotope ratios found in meteorites suggest that a supernova exploded nearby while the Sun and Solar System were still forming. But the blast wave from a supernova that close could have potentially destroyed the nascent Solar System.

New calculations shows that a filament of molecular gas, which is the birth cocoon of the Solar System, aided the capture of the isotopes found in the meteorites, while acting as a buffer protecting the young Solar System from the nearby supernova blast.

Primitive meteorites preserve information about the conditions at the birth of the Sun and planets. The meteorite components show an inhomogeneous concentration of a radioactive isotope of aluminum. This variation suggests that an additional amount of the radioactive aluminum was introduced shortly after the Solar System started forming.

A nearby supernova explosion is the best candidate for this injection of new radioactive isotopes. But a supernova that was close enough to deliver the amount of isotopes seen in meteorites would have also created a blast wave strong enough to rip the nascent Solar System apart.

A team led by Doris Arzoumanian at the National Astronomical Observatory of Japan proposed a new explanation of how the Solar System acquired the amount of isotopes measured in meteorites while surviving the supernova shock. Stars form in large groups called clusters inside giant clouds of molecular gas. These molecular clouds are filamentary.

Small stars like the Sun usually form along the filaments and large stars, which will explode in a supernova, usually form at the hubs where multiple filaments cross.

Assuming that the Sun formed along a dense molecular gas filament, and a supernova exploded at a nearby filament hub, the team’s calculation showed that it would take at least 300,000 years for the blast wave to break up the dense filament around the forming Solar System.

The components of meteorites enriched in radioactive isotopes formed in approximately the first 100,000 years of Solar System formation inside the dense filament. The parent filament may have acted as a buffer to protect the young Sun and helped catch the radioactive isotopes from the supernova blast wave and channel them into the still forming Solar System.

These results appeared as Arzoumanian et al. “Insights on the Sun Birth Environment in the Context of Star Cluster Formation in Hub–Filament Systems” in the Astrophysical Journal Letters on April 25, 2023.

Journal: The Astrophysical Journal Letters
DOI: 10.3847/2041-8213/acc849
Method of Research: Computational simulation/modeling
Subject of Research: Not applicable
Article Title: Insights on the Sun Birth Environment in the Context of Star Cluster Formation in Hub–Filament Systems
Article Publication Date: 25-Apr-2023

Media Contact

Hitoshi Yamaoka
NAOJ, NINS
hitoshi.yamaoka@nao.ac.jp

Media Contact

Hitoshi Yamaoka
NAOJ, NINS

All latest news from the category: Physics and Astronomy

This area deals with the fundamental laws and building blocks of nature and how they interact, the properties and the behavior of matter, and research into space and time and their structures.

innovations-report provides in-depth reports and articles on subjects such as astrophysics, laser technologies, nuclear, quantum, particle and solid-state physics, nanotechnologies, planetary research and findings (Mars, Venus) and developments related to the Hubble Telescope.

Back to home

Comments (0)

Write a comment

Newest articles

Zap Energy achieves 37-million-degree temperatures in a compact device

New publication reports record electron temperatures for a small-scale, sheared-flow-stabilized Z-pinch fusion device. In the nine decades since humans first produced fusion reactions, only a few fusion technologies have demonstrated…

Innovative microscopy demystifies metabolism of Alzheimer’s

Researchers at UC San Diego have deployed state-of-the art imaging techniques to discover the metabolism driving Alzheimer’s disease; results suggest new treatment strategies. Alzheimer’s disease causes significant problems with memory,…

A cause of immunodeficiency identified

After stroke and heart attack: Every year, between 250,000 and 300,000 people in Germany suffer from a stroke or heart attack. These patients suffer immune disturbances and are very frequently…

Partners & Sponsors