AST Colloquium - The Origin of Dust and the Regeneration of the Universe
The origin of dust and the regeneration of the universeDr. Steven GoldmanPostdoctoral FellowSpace Telescope Science Institute (STScI)Abstract:Dr. Goldman’s research focuses on understanding stellar evolution, and how in the later stages of their lives, stars roughly the size of the sun will contribute a tremendous amount of material back to the interstellar medium. During this phase, known as the Asymptotic Giant Branch, these stars can lose up to 30 times the mass of the Earth per year, and produce a significant amount of dust. In studying these stars, as well as red supergiant stars, we can measure the main sources of complex material in the Universe, that have seeded the creation of the Milky Way, the solar system, the Earth, and everything we've ever known. He will discuss new discoveries of stars in this complex and critical phase using the Hubble and Spitzer Space Telescopes. The observations have allowed us to better understand this contribution as we look to higher redshift and an earlier Universe.Speaker Bio:Dr. Goldman was born and raised in Syracuse, NY. For college he moved north and received a B.S. in Physics at St. Lawrence University and then did his PhD in Astrophysics at Keele University in the midlands of England. He is now a postdoctoral fellow at the Space Telescope Science Institute, the operations command center for the Hubble Space Telescope and soon-to-launch James Webb Space Telescope.Intended Audience:No background knowledge is required. All are welcome.
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