Galactic Archaeology with Stellar Siblings
February 7th, 2019 – 8:00 PM
Speaker: Natalie Price-Jones
Location: Room 1160, Bahen Centre (40 St. George Street)
Please note the new location!
Planetarium tickets will be handed out at 7:45 PM outside of the lecture room on a first-come first-served basis. Any remaining planetarium tickets will be available after the talk.
While astronomers can understand how galaxies grow and evolve by looking out into the cosmos, the history of our own Milky Way is something of a mystery. Our solar system’s position, embedded in the disk of the Milky Way, makes it difficult to understand how our Galaxy is changing on large scales. In this month’s AstroTour, I’ll explain how astronomers use measurements of nearby stars to extrapolate a complete picture of the Galaxy. This approach of using some stars to learn about the Galaxy as a whole can also be applied to understanding its history, through a process called ‘chemical tagging.’ I’ll discuss how I use this technique in my research to find stellar siblings, and how this can help us not only unpack the history of the Milky Way but also make predictions for its future.
About the Speaker
Natalie is a fourth year PhD student in the Department of Astronomy and Astrophysics at UofT, where she studies stellar chemistry and applications of clustering algorithms to high dimensional data. When she’s not in the office she can be found doing yoga, playing Dungeons and Dragons, and honing her archery skills.
The U of T Astronomy Public Tour, or AstroTour, is a monthly event operated by the graduate students of the U of T Astronomy Department. The Tour features a public lecture by a member of the Department on topics ranging from their research to great moments in astronomical history. Following the lecture, tour-goers can peer at the night sky through the Department’s balcony and dome telescopes, or watch a planetarium show run live by astronomer. Admission to the tour is free. Seating for the lecture is on a first-come, first-served basis (doors open ten minutes before the start of the lecture), and the telescope observing is walk-in. The planetarium shows require tickets, which will be available at the event on a first-come first-served basis.
The AstroTours are generously financed by the Department of Astronomy and Astrophysics and the Dunlap Institute for Astronomy and Astrophysics.