RASC Regular Meeting, April 12, 2021

Planets under construction: how to study a million year process

RASC Regular Meeting, Monday April 12, 2021

7:00 PM, Meet and Greet

7:30 PM, Meeting begins, including guest talk, News from Space, AstroImaging Corner, and other RASC news.

FREE and open to the public.

Zoom link for this meeting

Guest Speaker:

Dr. Nienke van der Marel

Planets under construction: how to study a million year process

Planets around other stars, also called exoplanets, are seen everywhere! In the last 25 years, thousands of exoplanets have been found throughout the Milky Way. How do we find these planets? What are the chances of discovering life there? And if they are so common, why is it that we still don’t know how they are formed? With the ALMA telescope we can now finally zoom into the birth cradles of planets: dusty disks around young stars. The spectacular images have given us new insights, but also raised many more questions on the process of planet formation.

Continue Reading →

RASC Regular Meeting, March 8, 2021

Stellar Obituaries

RASC Regular Meeting, Monday March 8, 2021

7:00 PM, Meet and Greet

7:30 PM, Meeting begins, including guest talk, News from Space, AstroImaging Corner, and other RASC news.

FREE and open to the public.

Meeting will be hosted on Zoom using this link .

Guest Speaker:

Dr. Sharon Morsink

Stellar Obituaries

Cas A Supernova Remnant

Cas A Supernova Remnant. Imaged by NASA’s Chandra X-ray Observatory.

Stars have long lifespans that range from millions of years to hundreds of billions of years. But eventually all stars run out of fuel and die. When stars die, they can leave behind a white dwarf star, a neutron star, a black hole, or nothing but a bit of hot gas!
There have been a lot of discoveries in the field of stellar death in the last couple of years. In this talk I’ll introduce the main ideas behind white dwarf stars, neutron stars, black holes, and supernovae. Some of the recent observations of black holes and neutron stars include the first image of “the black hole’s shadow”, the measurements of colliding black holes and neutron stars, and observations of X-rays from binary systems containing a stellar corpse. I will provide a report on the most interesting stellar obituaries from the last couple of years, and explain what they tell us about how stars die, and how they change when they begin their new life as a black hole or neutron star.

Continue Reading →

RASC Regular Meeting, February 8, 2021

From the Big-Bang to Life on Earth

RASC Regular Meeting

7:30 PM, Monday February 8, 2021

FREE and open to the public.

Meeting will be hosted on Zoom using this link.

Guest Speaker:

Dr. Laurie Rousseau-Nepton

From the Big-Bang to Life on Earth: A Story on the Birth of the Stars

The galaxy M33

The evolution of our Universe has been shaped by different eras since its early fast expansion, the Big-Bang. It has been a long way from a world with only light and elementary particles, to a world of galaxies, stars, atoms and molecules. In this presentation, we will travel through space and time and see how the stars have transformed the Universe, filling their surrounding with light, and allowing a wide variety of chemical elements to propagate in space. Billions of years of star-formation eventually led to the formation planetary system, just like ours, enabling life to emerge. 

Continue Reading →

RASC Edmonton Regular Meeting: November 9, 2020

RASC Edmonton Online Meeting

Monday November 9th, 2020. 7:30 PM MST

Zoom Meeting Format. Use the link below to join the meeting.

Join Zoom Meeting

Meeting ID: 875 4699 6671

Featured Speaker: Dr. Brenda Matthews 

“Birth and evolution of debris disks: Windows into planetary systems”

Debris disks were identified relatively recently in astronomical terms, by the first all-sky infrared survey satellite IRAS. These interesting objects are continually created in planetary systems, both old and young, via collisions of comets and asteroids in orbit around stars.  The collisions create newly visible dusty disks, often detectable many millions of years after the dispersion of the protoplanetary disks which typify the youngest phases of star and planet formation.  I will describe what we understand about the origins, evolution and structure of these disks, as well as their role in planetary systems. Recent discoveries suggest they may be inexorably linked to the earliest phases of planet formation. Finally I will discuss some of the more esoteric examples of these disks which can show remarkable variability over relatively short periods of time.


RASC Edmonton Regular Meeting: April 13, 2020

Due to the COVID-19 situation, this meeting was held via Zoom.

Featured Speaker: Erik Rosolowsky – The PHANGS view of Nearby Galaxies

This talk will present new observations from the Physics at High Angular Resolution in Nearby GalaxieS (PHANGS) survey, a coordinated effort to study nearby galaxies with some of the world’s best telescopes.  New data from the Atacama Large Millimetere/submillimeter Array (ALMA), the Very Large Telescope (VLT), and the Hubble Space Telescope are being explored together to create a new view the small-scale physics of galaxies.  I will discuss how each of these telescopes contributes insight to the questions of how galaxies evolve over cosmic time through the process of star formation and stellar feedback.

Also featured: The 100th issue of AstroImaging Corner.

RASC Edmonton Regular Meeting: March, 9 2020

Free and Open to the Public 

Telus World of Science – Zeidler Dome

7:00 PM – Pre Meeting Mix & Mingle

7:30 PM – Meeting

Featured Speakers:

Bruce McCurdy – “Dynamic Astronomy: A ringside seat to our sensational Solar System”

Mark Zalcik – Ambler; A Closer to Home Graze