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.[1] 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.[2]
See also
editReferences
edit- ^ 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.
- ^ 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
edit- 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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