Calendar

Oct
13
Fri
Colloquium: Kyoung-Soo Lee (Host: Moire Prescott)
Oct 13 @ 3:15 pm – 4:15 pm
Colloquium: Kyoung-Soo Lee (Host: Moire Prescott) @ BX102

Colloquium Title

Kyoung-Soo Lee, Purdue University

Abstract text

Oct
19
Thu
Solar Group meeting
Oct 19 @ 1:30 pm – 2:30 pm
Oct
20
Fri
Planetary Group meeting
Oct 20 @ 10:30 am – 11:30 am
Colloquium: Benjamin Oppenheimer (Host: Kristian Finlator)
Oct 20 @ 3:15 pm – 4:15 pm
Colloquium: Benjamin Oppenheimer (Host: Kristian Finlator) @ BX102

Breaking the Self-Similarity of Galaxy Formation: A Circumgalactic Medium Perspective

Benjamin Oppenheimer, University of Colorado Boulder

If you could see a dark matter halo directly without knowing the scale, you probably could not distinguish a Milky Way halo from a cluster-sized halo.  However, if you look at the galaxies, you would likely see a dominant spiral galaxy in the former and a many quenched and quenching galaxies in the latter.  The study of galaxy formation aims to understand how very different galaxies form in dark matter halos of different masses.  I will argue for the importance of understanding the gaseous baryons in this context.  In contrast to the hot intracluster medium detected in emission in clusters, the circumgalactic medium (CGM) has to be probed by absorption lines toward background quasars and tells a vastly different and complicated story.  I will demonstrate, with the aid of hydrodynamic simulations, how the CGM is multi-phase (with cool ~10^4 K clouds embedded in a hot, ambient medium), plus how non-equilibrium ionization processes altering the heavy element ions we probe in spectra.  The next frontiers in the CGM require understanding the dynamics encoded not only in absorption line spectra of the UV, but in the X-ray via emission and absorption.

 

 

Oct
26
Thu
Solar Group meeting
Oct 26 @ 1:30 pm – 2:30 pm
Nov
2
Thu
Solar Group meeting
Nov 2 @ 1:30 pm – 2:30 pm
Nov
3
Fri
Planetary Group meeting
Nov 3 @ 10:30 am – 11:30 am
Nov
9
Thu
Solar Group meeting
Nov 9 @ 1:30 pm – 2:30 pm
Nov
10
Fri
Colloquium: Jane Rigby (Host: Moire Prescott)
Nov 10 @ 3:15 pm – 4:15 pm
Colloquium: Jane Rigby (Host: Moire Prescott) @ BX102

Science with the James Webb Space Telescope

Jane Rigby, NASA/GSFC

NASA’s James Webb Space Telescope (JWST) will have revolutionary capabilities and sensitivity for imaging and spectroscopy from 0.7 to 28 micron.  JWST should make major scientific advances across astrophysics, including the physics of reionization, galaxy formation and assembly, planetary science, and extrasolar planets.  In anticipation of a scheduled launch in 2019, JWST Cycle 1 Guest Observer proposals will be due in spring of 2018.  I will review the scientific capabilities of the telescope, the integration and test program, and how observers will plan observations and analyze JWST data.

Nov
16
Thu
Solar Group meeting
Nov 16 @ 1:30 pm – 2:30 pm