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PRODID:UW-Madison-Physics-Events
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SEQUENCE:1
UID:UW-Physics-Event-6407
DTSTART:20210408T203000Z
DTEND:20210408T220000Z
DTSTAMP:20260414T234102Z
LAST-MODIFIED:20210405T133039Z
LOCATION:Zoom meeting(see Abstract ) Coffee and tea 3:30pm\, Talk 3:45
 pm
SUMMARY:Investigating the Origin of the Stars Closest to the Milky Way
  Supermassive Black Hole\, Astronomy Colloquium\, Devin Chu\, UCLA
DESCRIPTION:The formation mechanism of the young stars called "S-stars
 " located within an arcsecond of the Milky Way supermassive black hole
  remains a mystery. Proposed formation scenarios for these S-stars inc
 lude the tidal disruption of a binary system and migration from the cl
 ockwise disk of young stars. Identifying current binary systems among 
 the S-stars can provide important constraints for these formation mech
 anisms. Binary stars also play a significant role in the evolution and
  dynamics of the clusters they live in. While binary systems are impor
 tant for understanding the history of the young star cluster at the Ga
 lactic Center\, there have been limited surveys for binaries of the re
 gion. With two decades of integral field spectroscopy data and advance
 d tools for fitting mid-infrared stellar spectra\, it is feasible to c
 onduct a comprehensive spectroscopic binary search of the Galactic Cen
 ter S-stars. I will present a framework for searching for spectroscopi
 c binaries. This analysis uses 20 years of spectroscopy data and inclu
 des a sample of 29 stars located closest to the supermassive black hol
 e. With these data and framework\, I can place constraints on potentia
 l companion masses and the intrinsic binary fraction. I will also disc
 uss how these limits have implications for the proposed S-stars’ for
 mation mechanisms.
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\nWeb Link: Zoom Link:
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\nhttps://uwmadison
 .zoom.us/j/88513896776?pwd=Y1JtRE1KZllxWkFTamJBSGtGdm9yQT09
URL:https://www.physics.wisc.edu/events/?id=6407
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