Astrophysics

Title: The emergence of quenched galaxies in the era of JWST

Speaker: Christina Williams, University of Arizona

Host: Wen-fai Fong

Abstract: The cessation of star-formation in galaxies remains poorly understood, despite being one of the most influential events in galaxy evolution. It is now known that high stellar mass density is strongly associated with this process at z~2-3, but the reason for this association is also poorly understood. Does high stellar density have a causal link with quenching, or is it a side effect of rapid growth in the early Universe? I will present new spectroscopic studies of stellar ages, molecular gas content, and feedback signatures that collectively provide evidence in favor of the latter scenario: compact galaxies grow fast in the first few billion years, but their high stellar density does not directly cause quenching. Understanding the early evolutionary development of the first quenched galaxies at z>3 is a major science goal of the James Webb Space Telescope (JWST), and I will discuss how future extragalactic surveys with this groundbreaking facility will resolve outstanding questions about their formation scenarios. In particular, I will talk about surveys that are planned as part of the Guaranteed Time Observations (GTO) and our predictions for the science results we expect from JWST Cycle 1.

Keywords: Physics, Astronomy, Astrophysics


Title: Fast Radio Bursts -- Nature's Latest Cosmic Mystery

Speaker: Duncan Lorimer,  West Virginia University

Host: Deanne Coppejans

Abstract: Fast Radio Bursts are millisecond-duration pulses of unknown origin that were discovered by pulsar astronomers in 2007. A decade on from the discovery, with only 20 further bursts currently known, fast radio bursts remain enigmatic sources which parallel the early days of gamma-ray burst astronomy in the early 1970s. I will tell the story of their discovery, summarize what we know about them so far, describe the science opportunities these bursts present, and make predictions for what we will learn in the next decade.

Keywords: Physics, Astronomy, Astrophysics


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Maria Drout: TBA

March 6, 2018, 4:00 PM - 5:00 PM

Title: TBA

Speaker: Maria Drout, Carnegie Institute for Science

Host: Giacomo Terreran

Abstract: TBA

Keywords: Physics, Astronomy, Astrophysics


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Sasha Philippov: TBA

March 13, 2018, 4:00 PM - 5:00 PM

Title: TBA

Speaker: Sasha Philippov, UC Berkeley

Host: Sasha Tchekhovskoy

Abstract: TBA

Keywords: Physics, Astronomy, Astrophysics


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Shami Chatterjee: TBA

April 3, 2018, 4:00 PM - 5:00 PM

Title: TBA

Speaker: Shami Chatterjee,  Cornell University

Host: Deanne Coppejans

Abstract: TBA

Keywords: Physics, Astronomy, Astrophysics


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Suvi Gerzari: TBA

April 24, 2018, 4:00 PM - 5:00 PM

Title: TBA

Speaker: Suvi Gezari, University of Maryland

Host: Giacomo Terreran

Abstract: TBA

Keywords: Physics, Astronomy, Astrophysics


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Suvi Gezari: TBA

April 24, 2018, 4:00 PM - 5:00 PM

Title: TBA

Speaker: Suvi Gezari, University of Maryland

Host: Giacomo Terreran

Abstract: TBA

Keywords: Physics, Astronomy, Astrophysics


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Rachel Somerville: TBA

May 1, 2018, 4:00 PM - 5:00 PM

Title: TBA

Speaker: Rachel Somerville, Rutgers University

Host: Sarah Wellons

Abstract: TBA

Keywords: Physics, Astronomy, Astrophysics


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Jason Tumlinson: TBA

May 15, 2018, 4:00 PM - 5:00 PM

Title: TBA

Speaker: Jason Tumlinson

Host: 

Abstract: TBA

Keywords: Physics, Astronomy, Astrophysics


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Charlie Conroy: TBA

May 22, 2018, 4:00 PM - 5:00 PM

Title: TBA

Speaker: Charlie Conroy, Harvard University

Host: Cliff Johnson

Abstract: TBA

Keywords: Physics, Astronomy, Astrophysics


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CIERA Astronomer Evenings

August 31, 2018, 9:00 PM - 11:00 PM

CIERA Astronomer Evenings are special programs that take place on the last Friday of every month at Northwestern's Dearborn Observatory.

Look through the historic telescope and meet and talk with astronomers from CIERA, Northwestern's Center for Interdisciplinary Exploration and Research in Astrophysics!

Each month, different experts will be available to answer your astronomy and astrophysics questions. These evenings begin with a 10-minute introduction to a topic in astronomy, followed by an open Q&A session and fun, interactive demonstrations.

The talks are free and open to all!