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Streams on FIRE: Populations of Detectable Stellar Streams in the Milky Way and FIRE [PDF]

open access: yesThe Astrophysical Journal, 2023
We present the first detailed comparison of populations of dwarf galaxy stellar streams in cosmological simulations and the Milky Way. In particular, we compare streams identified around 13 Milky Way analogs in the FIRE-2 simulations to streams observed ...
Nora Shipp   +21 more
doaj   +7 more sources

Properties of Stellar Streams in the Galactic Disk

open access: yesOpen Astronomy, 2016
Stars of the Sirius, Coma Berenices, Hyades, Pleiades, Wolf 630, Dehnen 6, Dehnen 14, HR 1614, η Cephei, γ Leo streams, the newly identified two subgroups of the Hercules stream, and the streams BB 14, BB 17, BB 20, and BB 21 are selected using the ...
Marsakov V. A.   +2 more
doaj   +2 more sources

Dependence of stellar substructures in M31 type galaxy on satellite morphology in galaxy mergers [PDF]

open access: yesSerbian 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.
doaj   +1 more source

Building an Acceleration Ladder with Tidal Streams and Pulsar Timing

open access: yesThe 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
doaj   +1 more source

A Dwarf Galaxy Debris Stream Associated with Palomar 1 and the Anticenter Stream

open access: yesThe 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

On the Hunt for the Origins of the Orphan–Chenab Stream: Detailed Element Abundances with APOGEE and Gaia

open access: yesThe 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

Stream Fanning and Bifurcations: Observable Signatures of Resonances in Stellar Stream Morphology

open access: yesThe 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

The Hough Stream Spotter: A New Method for Detecting Linear Structure in Resolved Stars and Application to the Stellar Halo of M31

open access: yesThe Astrophysical Journal, 2022
Stellar streams from globular clusters (GCs) offer constraints on the nature of dark matter and have been used to explore the dark matter halo structure and substructure of our Galaxy. Detection of GC streams in other galaxies would broaden this endeavor
Sarah Pearson   +7 more
doaj   +1 more source

Application of clustering algorithm to wide stellar pairs for unsupervised search of parts of disrupting clusters

open access: yesOpen Astronomy, 2021
We introduce the application of the clustering algorithm to the preliminary compiled list of probable wide pairs of co-moving stars. The main aim of such development is a possibility of unsupervised blind search of coeval loose stellar structures over ...
Sapozhnikov Sergei, Kovaleva Dana
doaj   +1 more source

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