Measuring Structure from Spiral Galaxy Image
|Event Start Date||Thursday, November 7, 2013|
Serra Hall 212
|Event Start Time||1:00 pm - 2:00 pm|
Modern astronomical observatories have produced image data for hundreds of thousands of galaxies. To help answer many questions about the universe, information about galaxy structure must be inferred from these images. In this talk we present the first automated method that can determine arm-segment structure for spiral galaxies of arbitrary spiral arm configuration. We have run our algorithm on about 30,000 galaxies where human classifications are available from the Galaxy Zoo project and in all available measures, our algorithm agrees with the humans about as well as they agree with each other. This method will enable new astronomical and cosmological studies, such as investigating whether the universe has nonzero net angular momentum and understanding the relationship between galaxy structure and environment.
The talk will also have a Q&A session on Google internships and graduate school applications.
|Contact||Maria Cristina Manabat | firstname.lastname@example.org | (619)260-4706|