Chemical Cartography with APOGEE
Abstract
The SDSS-III APOGEE experiment is obtaining high-resolution near-IR spectra to provide measurements of stellar parameters and chemical abundances for stars in many different regions of the Galaxy. I will discuss initial results on the spatial variations of abundances derived from APOGEE data to date. In particular, I focus on mean metallicities in the Milky Way disk over a large range of Galactocentric radius (3<R<15) and distance from the Galactic midplane (|z|< 3kpc), and the metallicity gradients that are derived from these. Issues involving distance estimates and potential biases in the mean metallicities will also be discussed, as well as directions for extending this work.
- Publication:
-
American Astronomical Society Meeting Abstracts #223
- Pub Date:
- January 2014
- Bibcode:
- 2014AAS...22340302H