RASC Regular Meeting Apr 10, 2017 Scanning the Milky Way: Identifying High Energy Sources in our Galaxy

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

7:00 PM Pre-meeting mix and mingle.
7:30 PM Guest Speaker

Reuben Gazer

Scanning the Milky Way: Identifying High Energy Sources in our Galaxy

NGC 6388 – X-ray and Visible Composite Image. X-ray: NASA/CXC/IASF Palermo/M.Del Santo et al; Optical: NASA/STScI

How different are the stars we see in the night sky? How do we know their size, temperature, distance, and whether these are just ‘normal’ stars or more exotic light emitters? In this talk, I will be discussing parts of my research dedicated to identifying the most interesting stellar objects in our galaxy. First, we will overview the types of stars we expect to see in the galaxy and how we identify aspects like their temperature, distance and size as astronomers. Then we will introduce how binary star systems greatly alter the ‘expected’ behaviour of stellar properties and end with the role of these system’s in uncovering the Milky Way’s past.

Continue Reading…

RASC Regular Meeting Mar 13, 2017 Stellar Clusters: The Benchmarks of Galaxies

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

7:00 PM Pre-meeting mix and mingle.
7:30 PM Guest Speaker

Erik Rosolowsky
Stellar Clusters: The Benchmarks of Galaxies

Star cluster  Westerlund 2 (Hubble)

Star clusters are a favourite deep sky object for observers, but clusters also play a vital role in astrophysics.  Because all the stars in clusters are formed at the same time, they serve as essential tools for galactic archaeology and surveying.  In this talk, I will describe the cosmic life and times of clusters and present some of the ways that astrophysicists use clusters.  Finally, I will describe why we think that our Sun formed in a cluster and the search for stars from our old neighbourhood.

Continue Reading…