Astronomy Colloquia

Organic matter in the Universe: From Solar System to distant galaxies

Speaker: 
Sun Kwok (University of Hong Kong)
Event Date and Time: 
Mon, 2017-01-09 15:30 - 16:45
Location: 
Hennings 318
Local Contact: 
Jaymie Matthews
Intended Audience: 
Graduate
Recent observational and experimental evidence for the presence of complex organics in space is reviewed. Remote astronomical observations have detected ~200 gas-phased molecules through their rotational and vibrational transitions. Many classes of organic molecules are represented in this list, including some precursors to biological molecules. A number of unidentified spectral phenomena observed in the interstellar medium are likely to have originated from complex organics.

ASTRO-JAMBOREE 2016

Speaker: 
All members of the UBC Astronomy Group
Event Date and Time: 
Mon, 2016-09-19 15:00 - 17:00
Location: 
Hennings 318
Local Contact: 
Jaymie Matthews
Intended Audience: 
Undergraduate
The Astro-Jamboree is an annual tradition - a chance for everyone in the Astronomy Group (grad students, postdocs, undergrads, staff and faculty) to share and advertise their current research and activities, their progress and any future plans. It gives us a chance to start the academic term having a sense of what's happening (and will be happening) in our group, and to enhance research & education collaborations. The presentations will be short (1 - 2 min), illustrated by a few slides.

Observing the evolution of solids in protoplanetary disks

Speaker: 
Sean Andrews - Harvard-Smithsonian Center for Astrophysics
Event Date and Time: 
Mon, 2016-10-24 15:30 - 16:45
Location: 
Hennings 318
Local Contact: 
Jaymie Matthews and Aaron Boley
Intended Audience: 
Graduate

The canonical model for the formation of terrestrial planets and giant planet cores relies on an early and very efficient phase of planetesimal growth in a gas-rich circumstellar disk. But, as theorists have known for decades now, there are some formidable obstacles to meeting that requirement. Many of these problems, and potentially their solutions, are associated with the growth and migration of "pebbles" (mm/cm-sized particles) in the first few million years of a disk's lifetime.

How Dynamical Chaos Shapes the Architectures of Planetary Systems

Speaker: 
Dan Tamayo (CITA and University of Toronto Centre for Planetary Sciences)
Event Date and Time: 
Mon, 2016-11-07 15:30 - 16:45
Location: 
Hennings 318
Local Contact: 
Aaron Boley and Jaymie Matthews
Intended Audience: 
Graduate
The Solar System exists in a state of marginal stability. Is this an expected outcome? The exoplanet sample is now large enough that we can start to meaningfully address this question. I will present recent work connecting what are possibly the first observations of a planetary system forming within its birth disk to several observed features in the exoplanet sample.

RESCHEDULED TO MONDAY

Speaker: 
Gwendolyn Eadie (McMaster University)
Event Date and Time: 
Fri, 2016-09-09 15:30 - 16:45
Location: 
_
Local Contact: 
Intended Audience: 
Graduate

Frontiers in Massive Stellar Death

Speaker: 
Sean Couch (Michigan State University)
Event Date and Time: 
Mon, 2017-03-06 15:30 - 16:45
Location: 
Hennings 318
Local Contact: 
Jaymie Matthews
Intended Audience: 
Graduate
Core-collapse supernovae are the luminous explosions that herald the death of massive stars. While core-collapse supernovae are observed on a daily basis in nature, the details of the mechanism that reverses stellar collapse and drives these explosions remain unclear. While the most recent high-fidelity simulations show promise at explaining the explosion mechanism, there remains tension between theory and observation. I will discuss the recent developments in the study of the supernova mechanism that could lead to a predictive theory of massive stellar death.

THANKSGIVING DAY HOLIDAY

Speaker: 
NO ASTRONOMY COLLOQUIUM TODAY
Event Date and Time: 
Mon, 2016-10-10 15:30 - 16:45
Location: 
Hennings 318
Local Contact: 
Jaymie Matthews
Intended Audience: 
Graduate

CANCELLED: The first massive black holes

Speaker: 
Marta Volonteri (Institut d'Astrophysique de Paris)
Event Date and Time: 
Mon, 2016-10-31 15:30 - 16:45
Location: 
Hennings 318
Local Contact: 
Jaymie Matthews
Unfortunately, Dr. Volonteri has taken ill and her doctor has advised that she cannot travel for at least ten days.

PUBLIC VIEWING OF THE TRANSIT OF MERCURY

Event Date and Time: 
Mon, 2016-05-09 09:00 - 11:10
Location: 
Plaza in front of Koerner Library, UBC
Local Contact: 
Jaymie Matthews and Jeremy Heyl
Intended Audience: 
Public
The planet Mercury will transit (pass in front of the face of the Sun) for the first time in a decade on Monday morning, 9 May. The UBC Department of Physics & Astronomy, with the support of the UBC Astronomy Club, will host safe public viewing of the transit during 9:00 - 11:40 a.m. on Monday.

Stellar streams and fundamental physics

Speaker: 
Jo Bovy (University of Toronto)
Event Date and Time: 
Mon, 2016-10-03 15:30 - 16:45
Location: 
Hennings 318
Local Contact: 
Jaymie Matthews
Stellar tidal streams originating from disrupting globular clusters in the Milky Way’s halo hold enormous promise as probes of both the large-scale structure of the Milky Way halo’s density distribution and its small-scale structure. As such, the observed density, spatial, and kinematic structure of stellar streams can provide important new constraints on the interactions and small-scale structure of dark matter. I will discuss the simple gravitational dynamics of tidal-stream formation and evolution and how we can use it to build simple and fast models for tidal streams.
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