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PRODID:UW-Madison-Physics-Events
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UID:UW-Physics-Event-8226
DTSTART:20230413T203000Z
DTEND:20230413T213000Z
DTSTAMP:20260414T071529Z
LAST-MODIFIED:20230310T191756Z
LOCATION:4421 Sterling Hall
SUMMARY:Unveiling Luminous Obscured Black Hole Growth with the Wide-Ar
 ea Multi-Wavelength Stripe 82X Survey\, Astronomy Colloquium\, Dr. Ste
 phanie LaMassa\, Space Telescope Science Institute
DESCRIPTION:Active galactic nuclei (AGN) serve as signposts of growing
  supermassive black holes\, allowing us to study how these objects evo
 lve from the early Universe to the present day. Surveying patches of t
 he sky uncover representative samples of AGN\, with different survey s
 trategies favoring different populations. Rare objects that have a low
  space density\, like high luminosity AGN\, can only be adequately sam
 pled via wide-area surveys that probe a large volume of the Universe. 
 "Stripe 82X”\, an X-ray survey covering ~30 deg^2 of the rich multi-
 wavelength Sloan Digital Sky Survey Stripe 82 field\, is designed to u
 ncover obscured\, luminous black hole growth. In this talk\, I will su
 mmarize the AGN demographics discovered in Stripe 82X and how they com
 pare with AGN identified from wide-area optical and mid-infrared surve
 ys. I will discuss what we have learned about the host galaxies of the
 se luminous AGN and how AGN properties evolve with redshift and lumino
 sity. Finally\, I will mention exciting future prospects for learning 
 more about the cosmic evolution of rare (yet important!) high-redshift
 \, high luminosity obscured AGN.
URL:https://www.physics.wisc.edu/events/?id=8226
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