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PRODID:UW-Madison-Physics-Events
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SEQUENCE:2
UID:UW-Physics-Event-6122
DTSTART:20200924T204500Z
DTEND:20200924T223000Z
DTSTAMP:20240329T070241Z
LAST-MODIFIED:20200924T155105Z
LOCATION:Zoom meeting(see Abstract ) Coffee and tea 3:30 pm\, Talk 3:4
5 PM
SUMMARY:Knitting Together a New 3D View of our "Milky Way Galaxy".\, A
stronomy Colloquium\, Catherine Zucker\, Harvard CfA
DESCRIPTION:Until recently\, much of our understanding of the 3D struc
ture of our Milky Way was based on 2D observations of stars and dust\,
or spectral-line observations of gas. Distance measurements needed to
turn the 2D sky into a 3D physical picture of the stars and interstel
lar clouds that form them were few and far between. In this talk\, I w
ill discuss how the rise of Gaia and large photometric surveys — in
combination with new data science and visualization techniques — are
quickly changing the landscape. In particular\, I will show how 3D du
st maps have received a huge distance resolution boost from Gaia\, and
how 3D dust can be “knitted” together with velocity information f
rom gas and young stars to render new 3D spatial-kinematic views of ou
r solar neighborhood\, on scales of individual clouds to swaths of spi
ral arms. On small scales\, I will present a new analysis of the 3D sp
atial topologies of local molecular clouds. And on large scales\, I wi
ll show how many of these clouds are connected into a 2.7-kpc-long und
ulating structure called the Radcliffe Wave\, which redefines our unde
rstanding of the Local Arm nearby.
\nZoom Link:
\nhttps://us0
2web.zoom.us/j/88513896776?pwd=Y1JtRE1KZllxWkFTamJBSGtGdm9yQT09
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\n Meeting ID: 885 1389 6776
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Passcode: 713070
URL:https://www.physics.wisc.edu/events/?id=6122
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