Sep. 3

See the handbills posted around the department for the details of the special colloquium that is being held today.

abstract

Special Colloquium Speaker

Sep. 10

See the handbills posted around the department for the details of the special colloquium that is being held today.

abstract

Special Colloquium Speaker

Sep. 17

See the handbills posted around the department for the details of the special colloquium that is being held today.

abstract

Special Colloquium Speaker

Wed.
Sep. 25

See the handbills posted around the department for the details of the special colloquium that is being held today.

abstract

Special Colloquium Speaker

This presentation being held at 3:00 pm during the Cosmos Seminar time-slot.

Oct. 1

"The Present and Future of Exoplanets with Precise Radial Velocities"

abstract

Jason T. Wright

Pennsylvania State University

host: Adam Kraus

Oct. 8

Frank N. Bash Symposium 2013: New Horizons in Astronomy: 6-8 October 2013. No Colloquium presentation scheduled on 8 October, to avoid conflict.

Oct. 15

Tinsley Visiting Scholar/Planetary Group

"Accessing the Atmospheres of Terrestrial Exoplanets"

abstract

Seth Redfield

Wesleyan University

host: Michael Endl

Oct. 22

"Large-Scale Surveys of Star Formation in the Milky Way"

abstract

Peter Barnes

University of Florida

host: Neal Evans

Oct. 29

"Supermassive Black Hole Binaries: The Search Continues"

abstract

Tamara Bogdanovic

Georgia Institute of Technology

host: Steve Finkelstein

Nov. 5

"Observational Hallmarks of Evolution and Planet Formation in Circumstellar Disks"

abstract

Sean Andrews

Harvard-Smithsonian Center for Astrophysics

host: Neal Evans

Nov. 12

"The Role of Large Herschel Surveys in the Fields of Galaxy Evolution and Cosmology"

abstract

Marco Viero

California Institute of Technology

host: Karl Gebhardt

Nov. 19

"Galaxy Evolution at High Redshifts: Lyman-alpha and Other Lines"

abstract

Sangeeta Malhotra

Arizona State University

host: Steve Finkelstein

Nov. 26

"Revealing Cosmic Origins: from Exoplanet Atmospheres to the Intergalactic Medium with the HST Cosmic Origins Spectrograph"

abstract

Cindi Froning

University of Texas at Austin

host: Edward Robinson

Dec. 3

"A CMB Perspective of the Epoch of Reionization"

abstract

Christian Reichardt

University of California, Berkeley

host: Paul Shapiro

Dec. 10
2:30 pm

"Dark Matter in the Smallest Galaxies"

I will discuss how use the motions of stars to learn about the nature of particles. More specifically, I will review the stellar kinematics observed in the Milky Way's dwarf-galactic satellites and then discuss how such observations can translate into a test of the standard hypothesis that dark matter consists of 'cold' and 'collisionless' (i.e. weakly interacting) particles. This model seems to require that baryon-driven processes (e.g. energetic feedback from supernova explosions) alter the internal structure of galactic dark matter halos systematically with respect to predictions derived from cosmological N-body simulations. I will describe future observations that may tell whether such reconciliation is energetically feasible or whether the dark matter model requires additional complexity.

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Matthew Walker

Carnegie-Mellon University

host: Andrew Mann