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In astronomy, the Nyx stream is a proposed stellar stream that wraps around the Milky Way galaxy, relatively close to the sun. About 500 stars have been identified in this stream from the Gaia DR2. Elemental abundances of the most likely stellar members are consistent with the stream being a high velocity component of the Milky Way's thick disk, rather than having an extragalactic origin.

See also

• List of stellar streams

References

1. Necib, Lina; Ostdiek, Bryan; Lisanti, Mariangela; Cohen, Timothy; Freytsis, Marat; Garrison-Kimmel, Shea; Hopkins, Philip F.; Wetzel, Andrew; Sanderson, Robyn (2020). "Evidence for a Vast Prograde Stellar Stream in the Solar Vicinity". Nature Astronomy. 4 (11): 1078. arXiv:1907.07190. Bibcode:2020NatAs...4.1078N. doi:10.1038/s41550-020-1131-2. S2CID 197430957.
2. Zucker, Daniel B.; et al. (May 2021). "The GALAH Survey: No Chemical Evidence of an Extragalactic Origin for the Nyx Stream". The Astrophysical Journal Letters. 912 (2). id. L30. arXiv:2104.08684. Bibcode:2021ApJ...912L..30Z. doi:10.3847/2041-8213/abf7cd.

External links

• Comparing Nyx (purple stars) to the footprint of current spectroscopic surveys (gray) Sky plot
• Evidence for a vast prograde stellar stream in the solar vicinity 6 July 2020
• A Vast Stream of Flowing Stars Is Evidence of The Milky Way's Violent History MICHELLE STARR 6 JULY 2020

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