Dr. Roberto Abraham, University of Toronto will describe early results from Project Dragonfly, a Toronto/Yale instrument concept whose goal is to open up the new observational regime of ultra low surface brightness astronomy at visible wavelengths. Its design is optimized for testing the most fundamental prediction of galaxy formation models, namely that at low surface brightness levels all galaxies are embedded within a sea of complex substructure. The project couples innovative observing techniques (multiple redundant unobstructed beam paths and real-time modeling of sky variations for precision control of systematics) with new technologies, such as sub-wavelength nano-fabricated optical coatings to minimize scattered light and ghosting.
"I am a Professor in the Department of Astronomy & Astrophysics at the University of Toronto. I am also the Associate Chair for Graduate Studies in the department.
My area of specialization is observational cosmology, mainly focused on galaxy evolution. However, I enjoy learning about other areas of astrophysics, so at any given time I am probably working on a bunch of other things too. For example, at the moment I am working with my PhD students to build an instrument to find the first galaxies, am trying to develop a technique to find protostellar disks in galaxies halfway back to the Big Bang, and am exploring the best observational strategies to exploit adaptive optics."
Dr. Abraham's website.
The meeting will be held from 8:00 to 10:00 p.m. at The University of Toronto,
Mississauga Campus, in lecture hall SE2082 in the William Davis Building. The meeting is open to the public and is free.
Directions: Enter off of Mississauga Road. Park in lot 4 or the parkade, across from the fitness centre south of the
Davis Building. Enter through the Fitness centre, walk up the stairs until
you reach the main corridor then turn right. (If you need an elevator,
follow the corridor to the right of the stairs, then go up to the main
floor.) Look for the Mississauga Centre sign in front of the lecture room.
Post meeting plans: we usually continue the discussion post-meeting at a local bar – please join us!