Results 31 to 40 of about 439,382 (287)
A comprehensive view of the Virgo stellar stream [PDF]
Astronomy & Astrophysics, 2014 16 pages, 13 figures, 11 tables, Accepted for publication in A& ...
Duffau, Sonia +4 more
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Measuring the Sun's motion with stellar streams [PDF]
Monthly Notices of the Royal Astronomical Society, 2017 We present a method for measuring the Sun's motion using the proper motions of Galactic halo star streams. The method relies on the fact that the motion of the stars perpendicular to a stream from a low-mass progenitor is close to zero when viewed from a non-rotating frame at rest with respect to the Galaxy, and that the deviation from zero is due to ...
Malhan, Khyati, Ibata, Rodrigo
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The nature of the KFR08 stellar stream [PDF]
Astronomy & Astrophysics, 2015 9 pages, 6 figures, accepted for publication in A& ...
C. Liu, S. Feltzing, G. Ruchti
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A Dwarf Galaxy Debris Stream Associated with Palomar 1 and the Anticenter Stream
The Astrophysical Journal Letters, 2023 We report the discovery of a new stream (dubbed as Yangtze) detected in Gaia Data Release 3. The stream is at a heliocentric distance of ∼9.12 kpc and spans nearly 27° by 1.°9 on the sky.
Yong Yang +4 more
doaj +1 more source
Multiple Components of the Jhelum Stellar Stream [PDF]
The Astrophysical Journal Letters, 2019 Abstract In simple models of the Milky Way, tidally disrupting satellites produce long and thin—nearly one-dimensional—stellar streams. Using astrometric data from the Gaia second data release and photometry from the Dark Energy Survey, we demonstrate that the Jhelum stream, a stellar stream in the inner halo, is a two-dimensional ...
Ana Bonaca +3 more
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The Astrophysical Journal, 2023 Stellar streams in the Galactic halo are useful probes of the assembly of galaxies like the Milky Way. Many tidal stellar streams that have been found in recent years are accompanied by a known progenitor globular cluster or dwarf galaxy.
Keith Hawkins +10 more
doaj +1 more source
KINEMATIC DISCOVERY OF A STELLAR STREAM LOCATED IN PISCES [PDF]
The Astrophysical Journal, 2013 We report the kinematic discovery of the Pisces Stellar Stream (PSS), at Galactic longitude of roughly l=135 degrees and longitude between -39 < b < -36 deg. We originally identified this halo substructure from velocities of red giant branch stars in Sloan Digital Sky Survey (SDSS) Data Release 8, and confirmed its presence in turnoff stars from ...
Martin, Charles +3 more
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Stellar population gradients in galaxy discs from the CALIFA survey : the influence of bars [PDF]
, 2014 We acknowledge financial support from the research projects under grants AYA2010-21887-C04-03, AYA2010-21322-C03-03 and AYA2010-15081 by the Spanish Ministerio de Ciencia e Innovación.While studies of gas-phase metallicity gradients in disc galaxies are ...
Wisotzki, L. +73 more
core +1 more source
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
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Stream Fanning and Bifurcations: Observable Signatures of Resonances in Stellar Stream Morphology
The Astrophysical Journal, 2023 Recent observations have revealed a trove of unexpected morphological features in many of the Milky Way’s stellar streams. Explanations for such features include time-dependent deformations of the Galactic gravitational potential, local disruptions ...
Tomer D. Yavetz +4 more
doaj +1 more source