Focal Interest
Focal Interest

Stars

  1. VLBI and Gaia agree on many long-period variable star distances
    Compare VLBI and Gaia DR3 astrometric measurements of 43 long period variable stars, revealing complementary strengths for determining stellar distances and proper motions across different.
  2. SDSS-V catalogs Milky Way halo stars with new parameter pipeline
    SDSS-V all-sky spectroscopic survey produces validated stellar parameter catalog enabling discovery of distant halo substructures and chemically peculiar stars across the Milky Way.
  3. Supermassive stars may match JWST little red dot spectra
    Supermassive star models reproduce spectral signatures of JWST little red dots, suggesting these compact sources may be progenitors of the first supermassive black holes.
  4. Milky Way circular velocity measured from stellar abundances
    A new data-driven method measures the Milky Way's circular velocity using element abundance gradients, deriving rotation parameters at the solar radius.
  5. SLAM estimates stellar parameters for BOSS M dwarfs
    Stellar parameters for SDSS-V M dwarfs derived using data-driven support vector regression on BOSS spectra, validated against multiple benchmarks with quantified systematic offsets.
  6. Three ultra-faint Milky Way satellite candidates were discovered
    Three ultra-faint Milky Way satellites identified in DELVE survey data, including the faintest known satellite in the outer halo and an ambiguous compact system.