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Showing 1–2 of 2 results
Advanced filters: Author: C. Moni Bidin Clear advanced filters

  • A globular cluster-like system in the Galactic bulge hosts two stellar populations with remarkably different ages, identifying it as a site of recent star formation and providing observational proof for the hierarchical assembly of the Milky Way spheroid.

    • F. R. Ferraro
    • C. Pallanca
    • G. Beccari
    Research
    Nature Astronomy
    Volume: 5, P: 311-318

  • Two sources of variability are reported in extreme horizontal branch (EHB) stars found in globular clusters, both related to the action of weak magnetic fields: large surface spots and very energetic flares. EHB stars in clusters can thus be linked to EHB field stars, and beyond, to other stars with radiative envelopes.

    • Y. Momany
    • S. Zaggia
    • Y. Beletsky
    Research
    Nature Astronomy
    Volume: 4, P: 1092-1101