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DTSTART:20251102T020000
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DTSTART:20260308T020000
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UID:calendar.69287.field_date.0@calendar.lafayette.edu
DTSTAMP:20260913T081338Z
DESCRIPTION:Dr. Brian Zanger (Swarthmore College) will present his work tit
 led 'Modeling \nIrregularities in Galaxy Rotation'. The talk is open to al
 l Lafayette \naffiliates\, but will assume some background physics knowled
 ge. Please join us \nfor refreshments starting at 4:15pm.\n\n \n\nAbstract
 :\n\nModern integral field spectrographs can obtain hundreds of spectra ac
 ross the \nentire faces of thousands of distant galaxies\, allowing us an 
 unprecedented \nlook into their inner workings. By using the Doppler shift
  information from \nemission and absorption lines\, we can see a detailed 
 picture of how a \ngalaxy's gas and stars are moving. I use this type of s
 patially-resolved \nspectral data from the SDSS-MaNGA survey to study irre
 gularities in the \nrotational patterns of barred spiral galaxies\, develo
 ping statistical models \nto accurately describe the distortions caused by
  galactic bars. I have \nproduced models of over 1000 barred galaxies\, en
 abling me to study the \neffects of bars on galactic structure\, stellar p
 opulations\, and galaxy \nevolution. I will also discuss my work on kinema
 tic weak lensing\, the \nmodeling of gravitational distortions in galaxy v
 elocity fields created by \nthe dark matter halos of galaxy clusters. I am
  continuing these projects with \nundergraduate researchers interested in 
 astronomical data analysis.
DTSTART;TZID=America/New_York:20250924T163000
DTEND;TZID=America/New_York:20250924T173000
LAST-MODIFIED:20250916T160332Z
LOCATION:Hugel 100
SUMMARY:Physics/Astronomy Colloquium: Modeling Irregularities in Galaxy Rot
 ation
URL;TYPE=URI:https://calendar.lafayette.edu/node/69287
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