Results 11 to 20 of about 453,739 (281)
Extragalactic stellar tidal streams: Observations meet simulation [PDF]
Astronomy & AstrophysicsContext. According to the well-established hierarchical framework for galaxy evolution, galaxies grow through mergers with other galaxies. The ΛCDM cosmological model predicts that the stellar halos of massive galaxies are rich in remnants resulting from
Kuijken, Konrad +41 more
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Effects of chaos on the detectability of stellar streams [PDF]
Monthly Notices of the Royal Astronomical Society, 2019 Observations show that stellar streams originating in satellite dwarf galaxies are frequent in the Universe. While such events are predicted by theory, it is not clear how many of the streams that are generated are washed out afterwards to the point in ...
Mestre, Martín +4 more
core +8 more sources
Inferring Globular Cluster Initial Mass Function from Stellar Streams
The Astrophysical Journal LettersThe Gaia mission has provided precise astrometry and spectrophotometry for billions of stars in the Milky Way, enabling the identification and kinematic characterization of stellar streams. These streams, remnants of disrupted globular clusters and dwarf
Claire S. Ye, Raymond G. Carlberg
doaj +2 more sources
Streams in the Aquarius stellar haloes [PDF]
Monthly Notices of the Royal Astronomical Society, 2013 We use the very high resolution, fully cosmological simulations from the Aquarius Project, coupled to a semi-analytical model of galaxy formation, to study the phase-space distribution of halo stars in 'solar neighbourhood' like volumes.
Navarro, Julio F. +11 more
core +5 more sources
Stellar Population Properties in the Stellar Streams around SPRC047
The Astrophysical JournalWe have investigated the properties (e.g., age, metallicity) of the stellar populations of a ringlike tidal stellar stream (or streams) around the edge-on galaxy SPRC047 ( z = 0.031) using spectral energy distribution (SED) fits to ...
Seppo Laine +7 more
doaj +6 more sources
Dynamics of stellar and HI streams in the Milky Way halo
EPJ Web of Conferences, 2012 Stellar streams are key players in many aspects of Milky Way studies and, in particular, studying their orbital dynamics is crucial for furthering our understanding of the Milky Wayʼs gravitational potential.
Jin S.
doaj +2 more sources
The Information Content in Cold Stellar Streams [PDF]
The Astrophysical Journal, 2018 Cold stellar streams—produced by tidal disruptions of globular clusters—are long-lived, coherent dynamical features in the halo of the Milky Way. They hold the promise of delivering precise information about the gravitational potential, including ...
Bonaca, A., Hogg, D.
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Separatrix Divergence of Stellar Streams in Galactic Potentials [PDF]
Monthly Notices of the Royal Astronomical Society, 2020 Flattened axisymmetric galactic potentials are known to host minor orbit families surrounding orbits with commensurable frequencies. The behavior of orbits that belong to these orbit families is fundamentally different than that of typical orbits with ...
Johnston, Kathryn V. +9 more
core +4 more sources
Search for Exoplanets in steLLar streAms (SELLA)
, 2022 In this work we search and characterize exoplanets orbiting members of stellar streams, which are structures in the Galaxy composed of stars with similar dynamic and chemical properties, and with galactic or extragalactic origin. With current facilities,
Sánchez, María Luisa +5 more
core +3 more sources
Stream Members Only: Data-driven Characterization of Stellar Streams with Mixture Density Networks
The Astrophysical JournalStellar streams are sensitive probes of the Milky Way’s gravitational potential. The mean track of a stream constrains global properties of the potential, while its fine-grained surface density constrains galactic substructure. A precise characterization
Nathaniel Starkman +6 more
doaj +2 more sources