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Showing 1–4 of 4 results
Advanced filters: Author: Jorge Peñarrubia Clear advanced filters

  • In hierarchical cosmological models, galaxies grow in mass through the continual accretion of smaller ones. The tidal disruption of these systems is expected to result in loosely bound and distant stars surrounding the galaxy. A panoramic survey of the Andromeda galaxy (M31) now reveals stars and coherent structures that are almost certainly remnants of dwarf galaxies destroyed by the tidal field of M31.

    • Alan W. McConnachie
    • Michael J. Irwin
    • Kimberly A. Venn
    Research
    Nature
    Volume: 461, P: 66-69

  • The Milky Way disk is found to be moving with respect to the outer halo of the Galaxy as a result of the gravitational pull of the Large Magellanic Cloud as it falls into the Milky Way. Dynamical models of our Galaxy need to take this effect into account.

    • Michael S. Petersen
    • Jorge Peñarrubia
    Research
    Nature Astronomy
    Volume: 5, P: 251-255

  • The black holes in Galactic globular cluster Palomar 5 have been throwing their weight around and ejecting the stellar component of the cluster, creating its tidal tail and sparse appearance. Models predict that a billion years in the future the cluster will be composed entirely of stellar-mass black holes.

    • Mark Gieles
    • Denis Erkal
    • Jorge Peñarrubia
    Research
    Nature Astronomy
    Volume: 5, P: 957-966