ACP Seminar (Astronomy - Cosmology - Particle Physics)

Speaker: Puragra Guhathakurta (UC Santa Cruz)
Title: The Andromeda Galaxy: Hierarchical Galaxy Formation, Stellar Populations, and the Interstellar Medium
Date (JST): Thu, Jun 27, 2013, 16:00 - 17:00
Place: Seminar Room A
Related File: 973.pdf
Abstract: The Andromeda galaxy (M31) is effectively three laboratories rolled into one.
First, it offers us a close-up view of hiearchical galaxy formation. Second, having a large group of stars, all at roughly the same distance from us, is ideal for stellar population studies. Third, some of this starlight shines through interstellar dust and gas.

I will present the latest results from the decade-long SPLASH (Spectroscopic and Photometric Landscape of Andromeda's Stellar Halo) survey. Topics will include: dwarf satellite galaxies, a recent merger event, the ensemble of accreted satellites, chemical abundance patterns, stellar "thermometry", and ionized gas kinematics.