Results 11 to 20 of about 28,214 (291)
Dependence of stellar substructures in M31 type galaxy on satellite morphology in galaxy mergers [PDF]
Serbian Astronomical Journal, 2022 Stellar streams and shells are observed in halos of spiral galaxies. In this paper, we investigated the formation of these structures due to mergers between the host spiral galaxy and its dwarf satellite galaxies.
Milošević S.
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The Southern Stellar Stream Spectroscopic Survey (S5): Chemical Abundances of Seven Stellar Streams [PDF]
The Astronomical Journal, 2020 Abstract We present high-resolution Magellan/MIKE spectroscopy of 42 red giant stars in seven stellar streams confirmed by the Southern Stellar Stream Spectroscopic Survey (S 5): ATLAS, Aliqa Uma, Chenab, Elqui, Indus, Jhelum, and Phoenix.
Alexander P. Ji +18 more
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A cold stellar stream in Pegasus [PDF]
Monthly Notices of the Royal Astronomical Society, 2019 We report the serendipitous discovery of a stellar stream in the constellation Pegasus in the south Galactic hemisphere. The stellar stream was detected using the SDSS Data Release 14 by means of a matched filter in the color--magnitude diagram that is optimised for a stellar population that is 8 Gyr old with [Fe/H] = $-$0.46 dex, and located at ...
Hélio D Perottoni +5 more
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Building an Acceleration Ladder with Tidal Streams and Pulsar Timing
The Astrophysical Journal Letters, 2023 We analyse stellar streams in action-angle coordinates combined with recent local direct acceleration measurements to provide joint constraints on the potential of our galaxy.
Peter Craig +3 more
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Chemical abundances of the Typhon stellar stream
Monthly Notices of the Royal Astronomical Society, 2022 ABSTRACT We present the first high-resolution chemical abundances of seven stars in the recently discovered high-energy stream Typhon. Typhon stars have apocentres r ≳ 100 kpc, making this the first detailed chemical picture of the Milky Way’s very distant stellar halo.
Alexander P Ji +4 more
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The structure of accreted stellar streams [PDF]
Monthly Notices of the Royal Astronomical Society, 2022 ABSTRACT Many of the Milky Way’s globular clusters are likely accreted from satellite galaxies that have long since merged with the Milky Way. When these globular clusters are susceptible to tidal disruption, this process likely starts already inside the parent satellite leading to an early stellar stream within the satellite.
Yansong Qian, Yumna Arshad, Jo Bovy
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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& ...
Liu, C., Feltzing, S., Ruchti, G.
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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
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