Results 31 to 40 of about 453,739 (281)
Stellar streams as gravitational experiments [PDF]
Astronomy & Astrophysics, 2017 Tidal streams of disrupting dwarf galaxies orbiting around their host galaxy offer a unique way to constrain the shape of galactic gravitational potentials. Such streams can be used as “leaning tower” gravitational experiments on galactic scales. The most well-motivated modification of gravity proposed as an alternative to dark matter on galactic ...
Thomas, Guillaume F. +4 more
openaire +3 more sources
Stellar streams as gravitational experiments [PDF]
Astronomy and Astrophysics, 2018 Kinematically cold tidal streams of globular clusters (GC) are excellent tracers of the Galactic gravitational potential at moderate Galactocentric distances, and can also be used as probes of the law of gravity on Galactic scales. Here, we compare for the first time the generation of such streams in Newtonian and Milgromian gravity (MOND).
G. F. Thomas +5 more
openaire +4 more sources
STEllAR-GROUP/octotiger: Kokkos kernels
, 2021 What's Changed Branch by @diehlpk in https://github.com/STEllAR-GROUP/octotiger/pull/341 Add Zenodo DOI by @diehlpk in https://github.com/STEllAR-GROUP/octotiger/pull/342 Docu by @diehlpk in https://github.com/STEllAR-GROUP/octotiger/pull/347 Add ...
Biddiscombe, John +10 more
core +1 more source
S 5: The Orbital and Chemical Properties of One Dozen Stellar Streams [PDF]
, 2022 We report the kinematic, orbital, and chemical properties of 12 stellar streams with no evident progenitors using line-of-sight velocities and metallicities from the Southern Stellar Stream Spectroscopic Survey (S 5), proper motions from Gaia EDR3, and ...
core +3 more sources
Stream Members Only: Data-Driven Characterization of Stellar Streams with Mixture Density Networks [PDF]
, 2023 Stellar 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
Bonaca, Ana +6 more
core
S 5 :The Orbital and Chemical Properties of One Dozen Stellar Streams [PDF]
, 2022 We report the kinematic, orbital, and chemical properties of 12 stellar streams with no evident progenitors using line-of-sight velocities and metallicities from the Southern Stellar Stream Spectroscopic Survey (S 5), proper motions from Gaia EDR3, and ...
Pace, Andrew B. +41 more
core +1 more source
A DETECTION OF GAS ASSOCIATED WITH THE M31 STELLAR STREAM [PDF]
The Astrophysical Journal, 2015 10 pages, 5 figures, accepted for publication in the Astrophysical ...
Koch, Andreas +4 more
openaire +2 more sources
On the structure of tidally disrupted stellar debris streams [PDF]
Monthly Notices of the Royal Astronomical Society, 2016 A tidal disruption event (TDE) -- when a star is destroyed by the immense gravitational field of a supermassive black hole -- transforms a star into a stream of tidally-shredded debris. The properties of this debris ultimately determine the observable signatures of TDEs.
Coughlin, Eric R. +3 more
openaire +3 more sources
A Tangle of Stellar Streams in the North Galactic Cap [PDF]
The Astrophysical Journal Letters, 2018 Abstract Stellar halo substructures were identified using statistical photometric parallax of blue main-sequence turnoff stars from 14 Sloan Digital Sky Survey stripes in the north Galactic cap. Four structures are consistent with previous measurements of the Sagittarius dwarf tidal stream: the leading tail, the “bifurcated” stream, the ...
Jake Weiss +2 more
openaire +2 more sources
Catalog of Mock Stellar Streams in Milky Way-Like Galaxies
The Open Journal of AstrophysicsDynamically cold stellar streams from tidally dissolved globular clusters (GCs) serve as excellent tools to measure the Galactic mass distribution and show promise to probe the nature of dark matter.
Colin Holm-Hansen +2 more
doaj +1 more source