Fimbulthul is a tidal stellar stream torn off from Omega Centauri, the largest globular cluster of our Milky Way galaxy. The stream contains 309 known stars stretching over 18° in the constellations of Hydra and Centaurus, matching the same age as the globular cluster. Omega Centauri is considered the nucleus of a dwarf galaxy that merged with the Milky Way.[1]

The stream was discovered in the Gaia DR2 star database that determined the direction, distances and motion of over one billion stars.[2]

The name Fimbulthul is a river in Norse mythology.

See also

• List of stellar streams

References

• Identification of the long stellar stream of the prototypical massive globular cluster ω Centauri Nature Astronomy (2019)
  • Preprint at arxiv.org Rodrigo Ibata, Michele Bellazzini, Khyati Malhan, Nicolas Martin, Paolo Bianchini, 2019
• The Streams of the Gaping Abyss: A population of entangled stellar streams surrounding the Inner Galaxy Rodrigo Ibata, Khyati Malhan, Nicolas Martin, 2019

External links

• Gaia: The sky is littered with undigested galaxies
• Omega Centauri's lost stars
• Omega Centauri’s lost stars

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