A study led by the Canary Islands Institute of Astrophysics demonstrates the transfer of chemical elements in massive binary systems
“Massive stars inherit the heaviest chemical elements from their companions”
Forensic Headline Assessment: The original headline uses a metaphor ('inherit') to explain a physical process of mass transfer, which is neutralized here to accurately describe the astrophysical phenomenon.
An international research led by the Canary Islands Institute of Astrophysics (IAC) has revealed that the chemical elements present on the surface of young massive stars originate from interaction with their companions in binary systems. The work, published in the journal Astronomy and Astrophysics, provides empirical evidence on the transfer of stellar material.
The study analyzed a sample of 45 spectroscopic binary systems containing massive O-type stars. The researchers identified that stars with greater surface accumulation of helium orbit very close to their companion, completing their cycles in less than 15 days.
According to the authors, the more massive star in the system evolves and expands more rapidly, transferring helium-rich gas to the recipient star before ending its life cycle in a supernova explosion.
These findings force a revision of current theoretical models on stellar evolution, providing a new observational tool to identify binary systems that have undergone previous interactions.
- The research was led by the Canary Islands Institute of Astrophysics (IAC).
- 45 single-line spectroscopic binary systems were analyzed.
- The study explains the anomaly known as the 'helium discrepancy' in massive stars.
- The results were published in the scientific journal Astronomy and Astrophysics.
Corroborates: Massive stars inherit the heaviest chemical elements from their companions