Nyx stream

Short description: Proposed stellar stream

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

* List of stellar streams

## References

1. ↑ Necib, Lina; Ostdiek, Bryan; Lisanti, Mariangela; Cohen, Timothy; Freytsis, Marat; Garrison-Kimmel, Shea; Hopkins, Philip F.; Wetzel, Andrew et al. (2020). "Evidence for a Vast Prograde Stellar Stream in the Solar Vicinity". Nature Astronomy 4 (11): 1078. doi:10.1038/s41550-020-1131-2. Bibcode: 2020NatAs...4.1078N.
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. doi:10.3847/2041-8213/abf7cd. Bibcode: 2021ApJ...912L..30Z.

## 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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The Milky Way

Location|

Milky Way → Milky Way subgroup → Local Group → Local Sheet → Virgo Supercluster → Laniakea Supercluster → Observable universe → Universe
Each arrow (→) may be read as "within" or "part of".

The Milky Way Galaxy

Galactic core|

* Center of the Milky Way
* Sagittarius A
* Sagittarius A*
* Supermassive black hole

Spiral arms|

* Carina–Sagittarius
* Norma–Cygnus
* Orion–Cygnus
* Perseus
* Scutum–Centaurus

Satellite galaxies|

| Magellanic Clouds|

* Large Magellanic Cloud
* Small Magellanic Cloud
* Magellanic Stream
* Magellanic Bridge

|

Sagittarius Spheroidal|

* Sagittarius Stream
* Boötes II
* Coma Berenices
* Messier 54
* Palomar 12
* Segue 1
* Segue 2
* Terzan 7

Dwarfs|

* Antlia 2
* Boötes I
* Boötes III
* Canes Venatici I
* Canes Venatici II
* Canis Major
* Carina
* Crater 2
* Draco
* Fornax
* Hercules
* Leo I
* Leo II
* Leo IV
* Leo V
* Leo T
* Phoenix
* Pisces I
* Pisces II
* Sculptor
* Sextans
* Triangulum II
* Ursa Major I
* Ursa Major II
* Ursa Minor
* Virgo I

Other|

* Gaia Sausage
* Monoceros Ring
* Virgo Stream
* Koposov I
* Koposov II
* Segue 3
* Willman 1

Related|

* Andromeda–Milky Way collision
* Baade's Window

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