Mapping the Stars: A Catalog of Over 50 Million Stars from SMSS and Gaia
Stellar Parameters Deneb Stellar Parameters Deneb

Mapping the Stars: A Catalog of Over 50 Million Stars from SMSS and Gaia

Yang Huang and Timothy C. Beers have compiled a catalog of stellar parameters for over 50 million stars using data from SMSS DR4 and Gaia DR3. This dataset provides accurate metallicity, temperature, and distance estimates, significantly expanding previous surveys. Their work is part of SPORTS, a project to catalog as many Milky Way stars as possible. The results will help astronomers study galactic evolution and the early universe.

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Decoding the Chemical Puzzle of the Sagittarius Dwarf Galaxy

Decoding the Chemical Puzzle of the Sagittarius Dwarf Galaxy

Researchers analyzed 37 stars in the Sagittarius Dwarf Galaxy to study its chemical evolution. They found significant enrichment of heavy elements through the r-process, likely from neutron star mergers. Stars in the galaxy's core and tidal streams showed similar chemical patterns, indicating a shared history. The study highlights how dwarf galaxies contribute to the universe's chemical complexity.

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