RSAA Colloquia / Seminars / Feast-of-Facts: Thursday, 11 February 2016, 11:00-12:00; Duffield Lecture Theatre

Fan Liu

"Final Thesis Talk - Chemical signatures of planet formation in field and open cluster stars"

We addressed strictly line-by-line differential abundance analysis using high resolution, high signal-to-noise ratio spectra on field stars (e.g., stellar binaries, terrestrial planet hosts etc.) and open cluster stars (e.g., the Hyades stars) in order to seek for and test the possible chemical signatures of planet formation. Our researches can help to answer a few fundamental questions: how planet formation affect the chemical compositions of the host stars and whether stellar birth environment affect the formation of planet. This thesis also has ramifications for Galactic archeology since we measured the accurate abundance variations in a bench mark open cluster and arise a crucial challenge to the current view of Galactic archeology.