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VERSION:2.0
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PRODID:UW-Madison-Physics-Events
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SEQUENCE:2
UID:UW-Physics-Event-9579
DTSTART:20260416T203000Z
DTEND:20260416T213000Z
DTSTAMP:20260413T070125Z
LAST-MODIFIED:20260303T152406Z
LOCATION:4421 Sterling Hall
SUMMARY:Single-lined Eclipsing Binary Stars: A Stellar Astronomy Multi
 -Tool\, Astronomy Colloquium\, Prof. Daniel Stevens\, UMN-Duluth
DESCRIPTION:Precisely and accurately measured stellar properties such 
 as mass and radius are important for a wide range of science cases\, f
 rom characterizing nearby exoplanets to inferring properties of distan
 t galaxies. Double-lined eclipsing binary stars (DLEBs) have long been
  the gold standard for making such measurements\, as the two similar-l
 uminosity stars’ individual masses and radii can routinely be measur
 ed to percent-level precision. By combining space-based observations f
 rom the TESS and Gaia space telescopes with archival datasets\, it is 
 now possible to measure fundamental stellar parameters precisely and a
 ccurately for single-lined EBs (SLEBs)\, in which only the more lumino
 us star’s spectrum is seen. I will summarize the advantages of study
 ing SLEBs for specific science cases\, focusing on recent efforts by m
 y research group and others to resolve the longstanding problem of rad
 ius inflation in low-mass stars. I will also highlight a few “superl
 ative” SLEB discoveries and their potential for probing stellar phys
 ics across the HR diagram. I will discuss the obstacles we have encoun
 tered to characterize SLEBs to percent-level precision and accuracy\, 
 then preview the near-term prospects for overcoming them.
URL:https://www.physics.wisc.edu/events/?id=9579
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