
Details below on this image!
Today’s telescopes reveal the cosmos in colorful detail. The images produced are inspiring to behold, but should be viewed as much more than just “pictures of space”. These images differ from ordinary photographs, both in how they are made and how they are used. Telescopes are designed not to mimic human vision, but to maximize the information in the images they record. The creation of cosmic images is also far from being the final step in the scientific process. Interpreting or “reading” these images, using mathematics and physics, is how we go from a beautiful picture to a deeper understanding of our universe.
The panelists in this discussion work on the cutting edge of astrophysics and cosmology, studying the birth and death of stars, the properties of galaxy clusters, and the evolution of the universe under the influence of both Dark Matter and Dark Energy. They will show you how to look at “pictures of space” in a new way, explaining the making and meaning of the most important images from their own research.
A Panel Discussion on the Nature and Meaning of Images in Astrophysics
Sunday, June 13, 2010 7:00pm FREE and open to the public.
School of the Art Institute of Chicago, 112 S. Michigan Ave., SAIC Ballroom, Chicago
Panelists:
Dr. Thomas Crawford is a Senior Research Associate in the Dept. of Astronomy and Astrophysics at the University of Chicago. He uses observations of the Cosmic Microwave Background, which is the faint afterglow of light from the Big Bang, to discover and characterize distant galaxy clusters. These clusters can be used to study the properties of the mysterious Dark Energy, a substance which is currently accelerating the expansion of the universe.

Dr. Michael Gladders is an Assistant Professor of Astronomy and Astrophysics at the University of Chicago. He studies clusters of galaxies, which are the most massive objects in the universe. The gravity from these massive objects warps space, bends light, and acts like a magnifying lens for viewing distant galaxies. Using this “gravitational lensing”, Dr. Gladders can study both the properties of galaxy clusters, and these distant galaxies that would otherwise be too faint to be seen.

Dr. Christy Tremonti is an Assistant Professor of Astronomy at the University of Wisconsin Madison. She studies starburst galaxies which are forming stars at a rate 10 to 100 times higher than the Milky Way. Star formation is so intense in these galaxies that the combined action of multiple supernovae explosions causes huge amounts of gas and newly formed heavy elements to get ejected from the galaxy.
This event is jointly hosted by the Kavli Institute for Cosmological Physics, the School of the Art Institute of Chicago, and Adler Planetarium, in association with the Great Lakes Cosmology Workshop 2010
Image “Starburst Galaxy M82″ Credit: Mark Westmoquette (University College London), Jay Gallagher (University of Wisconsin-Madison), Linda Smith (University College London), WIYN//NSF, NASA/ESA
This image is a color-coded picture of the archetypal starburst galaxy M82. It shows the horizontal stellar disk of the galaxy, which harbors its active star formation, and a perpendicular supergalactic wind of ionized gas powered by the energy released in the starburst.
To make this image, data from the WIYN 3.5-meter telescope on Kitt Peak were combined with data from the WFPC2 camera on the Hubble Space Telescope. Purple represents emission in ionized hydrogen (H-alpha) and ionized nitrogen, and the green is ionized sulfur in the WIYN data. In the HST image, these colors refer to H-alpha and nitrogen separately. Note the varying angular resolution of the dust lanes in the central part of the superwind on either side of the stellar disk.
These data are being used in a study of the connection between structures within M82 and its galactic superwind. This image was first presented at the “Essential Science in Hubble’s Final Years” symposium, held 3-6 May 2004 at the Space Telescope Science Institute.
The WIYN 3.5-meter and 0.9-meter telescopes on Kitt Peak are operated by a consortium of the University of Wisconsin, Indiana University, Yale University, and the National Optical Astronomy Observatory (NOAO).