Search Results - Sten Hasselquist

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  1. 1
    StarFlow: Leveraging Normalizing Flows for Stellar Age Estimation in SDSS-V DR19

    StarFlow: Leveraging Normalizing Flows for Stellar Age Estimation in SDSS-V DR19 by Alexander Stone-Martinez, Jon A. Holtzman, Yuxi(Lucy) Lu, Sten Hasselquist, Julie Imig, Emily J. Griffith, Earl P. Bellinger, Andrew K. Saydjari

    Published 2025-01-01

    Understanding the ages of stars is crucial for unraveling the formation history and evolution of our Galaxy. Traditional methods for estimating stellar ages from spectroscopic data often struggle with providing appropriate uncertainty estimations and are severely constrained by the parameter space....

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    Tidal Debris Candidates from the ω Centauri Accretion Event and Its Role Building Up the Milky Way Halo

    Tidal Debris Candidates from the ω Centauri Accretion Event and Its Role Building Up the Milky Way Halo by Borja Anguiano, Arik W. Mitschang, Takanobu Kirihara, Yutaka Hirai, Danny Horta, Sten Hasselquist, Ricardo P. Schiavon, Steven R. Majewski, Andrew C. Mason, Adrian M. Price-Whelan, Carlos Allende Prieto, Verne V. Smith, Katia Cunha, David L. Nidever

    Published 2025-01-01

    We identify stellar tidal debris from the ω Centauri ( ω Cen) system among field stars in the Apache Point Observatory Galactic Evolution Experiment (APOGEE) survey via chemical tagging using a neural network trained on APOGEE observations of the ω Cen core. We find a total of 463 ω Cen debris candi...

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