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The Open Journal of Astrophysics
Article . 2025 . Peer-reviewed
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https://doi.org/10.32388/agj5k...
Article . 2024 . Peer-reviewed
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The Open Journal of Astrophysics
Article . 2025
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https://dx.doi.org/10.48550/ar...
Article . 2024
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Untangling Magellanic Streams

Authors: Dennis Zaritsky; Vedant Chandra; Charlie Conroy; Ana Bonaca; Phillip A. Cargile; Rohan P. Naidu;

Untangling Magellanic Streams

Abstract

The Magellanic Stream (MS) is known to contain multiple H<small>I</small> strands and corresponding stellar populations are being discovered. Combining a sample of 17 stars from the H3 (“Hectochelle in the Halo at High Resolution”) survey with 891 stars drawn from the <em>Gaia</em> DR3 catalog, we trace stars along a sub-dominant strand of the MS, as defined by gas content, across 30 on the sky. We find that the corresponding dominant strand at the similar position along the MS is devoid of stars with Galactocentric distance ≲ 55 kpc while the subdominant strand shows a close correspondence to such stars. We conclude that (1) these two Stream strands have different origins, (2) they are likely only close in projection, (3) the subdominant strand is tidal in origin, and (4) the subdominant strand is composed of “disk” material, gas and stars, with a chemical composition that marginally favors it coming from the Small Magellanic Cloud.

Keywords

QB460-466, Astronomy, Astrophysics of Galaxies (astro-ph.GA), FOS: Physical sciences, QB1-991, Astrophysics, Astrophysics - Astrophysics of Galaxies

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
2
Top 10%
Average
Average
Green
gold