Kavli Affiliate: Alexander P. Ji
| First 5 Authors: Vedant Chandra, Vedant Chandra, , ,
| Summary:
The fifth-generation Sloan Digital Sky Survey (SDSS-V) is conducting the
first all-sky low-resolution spectroscopic survey of the Milky Way’s stellar
halo. We describe the stellar parameter pipeline for the SDSS-V halo survey,
which simultaneously models spectra, broadband photometry, and parallaxes to
derive stellar parameters, metallicities, alpha abundances, and distances. The
resulting BOSS-MINESweeper catalog is validated across a wide range of stellar
parameters and metallicities using star clusters and a comparison to
high-resolution spectroscopic surveys. We demonstrate several scientific
capabilities of this dataset: identifying the most chemically peculiar stars in
our Galaxy, discovering and mapping distant halo substructures, and measuring
the all–sky dynamics of the Milky Way on the largest scales. The
BOSS-MINESweeper catalog for SDSS DR19 is publicly available and will be
updated for future data releases.
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