Search

What are you looking for?

  1. The Milky Way's Circular Velocity Curve Measured Using Element Abundance Gradients

    Publication
    Spectroscopic surveys now supply precise stellar label measurements such as element abundances for large samples of stars throughout the Milky Way. These element abundances are known to correlate …

  2. Dynamical Origins of Azimuthal Metallicity Variations in the Galactic Disk: Insights from Kinematic Ridges with Gaia

    Publication
    Kinematic and spectroscopic studies in the past few years have revealed coherent azimuthal metallicity variations across the Milky Way's disk that may be the result of dynamical …

  3. The DREAMS Project: A New Suite of 1,024 Simulations to Contextualize the Milky Way and Assess Physics Uncertainties

    Publication
    We introduce a new suite of 1,024 cosmological and hydrodynamical zoom-in simulations of Milky Way-mass halos, run with Cold Dark Matter, as part of the …

  4. Machine Learning Techniques to Distinguish Giant Stars from Dwarf Stars Using Only Photometry—Pushing Redward

    Publication
    We present our photometric method, which combines Subaru/Hyper Suprime-Cam N B515, g-band, and i-band filters to distinguish giant stars in Local Group galaxies from …

  5. On the connection between nitrogen-enhanced field stars and the Galactic globular clusters

    Publication
    As sites of some of the most efficient star formation in the Universe, globular clusters (GCs) have long been hypothesized to be the building blocks of young galaxies …

  6. The DREAMS Project: Disentangling the Impact of Halo-to-Halo Variance and Baryonic Feedback on Milky Way Satellite Galaxies

    Publication
    We analyze the properties of satellite galaxies around 1,024 Milky Way-mass hosts from the DREAMS Project, simulated within a \(Λ\)CDM cosmology. Utilizing the TNG galaxy …

  7. Optical Spectroscopy Reveals Hidden Neutron-capture Elemental Abundance Differences among APOGEE-identified Chemical Doppelgängers

    Publication
    Grouping stars by chemical similarity has the potential to reveal the Milky Way's evolutionary history. The APOGEE stellar spectroscopic survey has the resolution and sensitivity for this …

  8. Counterculture Stars: Slow and Retrograde Stars with Low-alpha Disk Abundances

    Publication
    The Milky Way is home to a thin disk that can be defined via kinematics and/or elemental abundances. The elemental abundance-defined thin disk, also called the …

  9. Constraints on asteroid-mass primordial black holes in dwarf galaxies using Hubble Space Telescope photometry

    Publication
    Primordial black holes (PBHs) in the asteroid-mass range remain a viable and, until now, unconstrained dark matter (DM) candidate. If such PBHs exist, they could be captured …

  10. Disc asymmetry characterisation in JWST-observed galaxies at 1 < z < 4

    Publication
    We present a novel technique using Fourier series and Laguerre polynomials to represent morphological features of disc galaxies. To demonstrate the utility of this technique, we study the …

  11. The impact of classical bulges on stellar bars and boxy-peanut-X features in disc galaxies

    Publication
    Galactic bars and their associated resonances play a significant role in shaping galaxy evolution. Resulting resonance-driven structures, like the vertically extended boxy-peanut-X (BPX) feature, then …

  12. [X/Fe] Marks the Spot: Mapping Chemical Azimuthal Variations in the Galactic Disk with APOGEE

    Publication
    Chemical cartography of the Galactic disk provides insights to its structure and assembly history over cosmic time. In this work, we use chemical cartography to explore chemical gradients …

  13. Radial phase spirals in the Solar neighbourhood

    Publication
    The second data release of ESA's \(Gaia\) mission revealed numerous signatures of disequilibrium in the Milky Way's disc. These signatures are seen in the planar kinematics …