SO Seminar by Prof. Jon Holtzman

On Thursday March 14th, the Jesús Serra Foundation visitor Prof. Jon Holtzman (NMSU) will give a Severo Ochoa Seminar entitled "Chemical Cartography in the Milky Way with SDSS/APOGEE".

Starting date: 14 Marh 2019, 10:30h
End date: 14 March 2019, 12:00h
Location: Aula, IAC Headquarters, Tenerife.
Organizer: Instituto de Astrofísica de Canarias

Abstract:

The SDSS Apache Point Observatory Galactic Evolution Experiment (APOGEE) has collected high resolution near-IR spectra of several hundred thousand stars across the Milky Way. I'll describe some observational results about the spatial variation of chemical abundances as a function of Galactocentric radius and distance from the midplane, discussing mean abundances, metallicity distribution function, and the variation of abundance ratios of multiple elements. Additional information related to stellar ages can be obtained from [C/N] for red giant stars. Several lines of evidence suggest that radial migration has had a significant impact on the Galactic disk. The observed patterns of abundance ratios may provide observation al constraints on nucleosynthetic yields.

Link to the seminar recording: Chemical Cartography in the Milky Way with SDSS/APOGEE