Calendar

Aug
29
Mon
Pizza Lunch: Charles Steinhardt: Is Hierarchical Merging Broken?
Aug 29 @ 12:30 pm – 1:30 pm
Pizza Lunch: Charles Steinhardt: Is Hierarchical Merging Broken? @ AY 119

Title: Is Hierarchical Merging Broken?

Charles Steinhardt (Caltech, DARK)

I will describe two sharp puzzles suggesting a possible mismatch
between the current hierarchical merging paradigm and observations of
evolving galaxies.  Current models predict that the z ~ 4-8 universe
should be a time in which the most massive galaxies are transitioning from
their initial halo assembly to the later baryonic evolution seen in
star-forming galaxies and quasars.  Instead, massive galaxies appear to
exist impossibly early, before their halos should even have been able to
assemble.  Further, small halos should have generally formed earlier than
larger halos, yet the observed hierarchy in galaxy formation is inverted,
with more massive galaxies completing their growth earlier.  After
describing these puzzles, we will consider hierarchical merging is truly
inconsistent with observation or whether other explanations might be more
likely.

Sep
12
Mon
Pizza Lunch: Paul Hardersen
Sep 12 @ 12:30 pm – 1:30 pm
Pizza Lunch: Paul Hardersen @ AY 119

Title: Six orders of magnitude: Solar System studies of asteroids and the Sun

Paul Hardersen (U. of N. Dakota)

Sep
19
Mon
Pizza Lunch: Reta Beebe
Sep 19 @ 12:30 pm – 1:30 pm
Pizza Lunch: Reta Beebe @ AY 119

Title: JUNO

Reta Beebe

A .pdf of the talk can be found here.

 

 

Sep
26
Mon
Pizza Lunch: Keith Hawkins (Cambridge/Columbia)
Sep 26 @ 12:30 pm – 1:30 pm
Pizza Lunch: Keith Hawkins (Cambridge/Columbia) @ AY 119

Title: TBD

Keith Hawkins (Columbia/Cambridge)

 

Oct
10
Mon
Pizza Lunch: Laura Mayorga
Oct 10 @ 12:30 pm – 1:30 pm
Pizza Lunch: Laura Mayorga @ AY 119

Title: Proto-BD disks and the Kavli Summer Program in Astrophysics

Laura Mayorga

 

Oct
17
Mon
Pizza Lunch: Caitlin Doughty
Oct 17 @ 12:30 pm – 1:30 pm
Pizza Lunch: Caitlin Doughty @ AY 119

Title: Probing the z~6 UVB with Aligned Metal Absorbers

Caitlin Doughty

 

Nov
14
Mon
Pizza Lunch: Drew Chojnowski
Nov 14 @ 12:30 pm – 1:30 pm
Pizza Lunch: Drew Chojnowski @ AY 119

Title: H-band Spectral Variability of Classical Be Stars

Drew Chojnowski