RASC Regular Meeting April 9, 2018, Galaxy mergers in the nearby Universe

RASC Regular Meeting
TELUS World of Science – IMAX Theatre
FREE and open to the public.

7:00 PM Meet and Greet
7:30 PM Guest Speaker

Sara Ellison
Galaxy mergers in the nearby Universe

The Antennae Galaxies/NGC 4038-4039
NASA, ESA, and the Hubble Heritage Team (STScI/AURA)-ESA/Hubble Collaboration;
Acknowledgment: B. Whitmore (Space Telescope Science Institute)

Despite the emptiness of space, mergers between galaxies are surprisingly common.  Around 1% of galaxies in the nearby Universe are currently experiencing an interaction of some kind.  I will describe research that uses both observations and computer simulations to trace the dramatic effect of these interactions on a galaxy’s history: how the interaction can lead to massive bursts of star formation, alter the interstellar chemistry and even provide fuel for the central supermassive black hole.

 

 

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RASC Regular Meeting March 12, 2018, 25 Years of Supernovae

RASC Regular Meeting
TELUS World of Science – IMAX Theatre
FREE and open to the public.

7:00 PM Meet and Greet
7:30 PM Guest Speaker

Paul Gray
25 Years of Supernovae

Supernova Remnant SNR 0509-67.5 Image Credit: NASA, ESA, CXC, SAO, the Hubble Heritage Team (STScI/AURA), and J. Hughes (Rutgers University)

Supernovae mark the death of a star in one of the largest explosions in the universe, some resulting in the creation of black holes. They also create many of the heavy elements that earth and life as we know it is made from. For most of the 20th century supernovae were found by professional astronomers in the course of other research. By the 1980’s equipment and technology improved to allow amateurs to seriously pursue supernovae and contribute to research by alerting the professionals quckly of new events. There is much to learn from supernovae and until recently amateurs played a major role in the discovery of new supernovae.

Team Supernova Nova Scotia has had a front row seat to the changes both in discovery and science being done over the past 25 years. In this talk Paul will take us on the journey that his family has had while highlighting some of their discoveries, adventures and science.

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