Emily Levesque Public Lecture: The Weirdest Stars in the Universe
Perimeter Institute for Theoretical Physics・2 minutes read
Dr. Emily Levesque will discuss peculiar stellar phenomena and their role in exploring the universe's history, evolution, and extremes. By studying titanium oxide absorption lines in red supergiants' spectra, researchers like Dr. Levesque were able to accurately measure their temperatures and correct their placement on the diagram.
Insights
- Dr. Emily Levesque will discuss peculiar stellar phenomena, emphasizing their significance in studying the universe's history and evolution, using examples like Spica and Betelgeuse to illustrate the transition of stars over time.
- Researchers like Dr. Levesque use titanium oxide absorption lines in red supergiants' spectra to accurately measure temperatures, correcting discrepancies in their placement on the Hertzsprung-Russell diagram.
- The potential discovery of a Thorne-Zytkow object could revolutionize understanding of stable stellar interiors and element production, showcasing the ongoing advancements in stellar astronomy and the need for further observations to confirm significant findings.
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Recent questions
What is the Hertzsprung-Russell diagram?
A tool in astronomy to plot stars based on temperature and brightness.
How do researchers measure star temperatures accurately?
By analyzing titanium oxide absorption lines in red supergiants' spectra.
What is the significance of neutron stars in astronomy?
They are remnants of massive star cores, incredibly dense and small.
How are gamma-ray bursts detected in space?
Through observatories like the Swift spacecraft equipped with detectors.
What is the role of time domain astronomy in research?
To study fleeting events like gamma-ray bursts quickly.
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