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- W2953437648 abstract "Streams of stars from captured dwarf galaxies and dissolved globular clusters are identifiable through the similarity of their orbital parameters, a fact that remains true long after the streams have dispersed spatially. We calculate the integrals of motion for 44855 stars, to a distance of 4 kpc from the Sun, which have full and accurate 6D phase space positions in the Gaia DR2 catalogue. We then apply a novel combination of data mining, numerical and statistical techniques to search for stellar streams. This process returns seven high-confidence streams (including four that were not previously known), all of which display tight clustering in the integral of motion space. Colour-magnitude diagrams indicate that these streams are relatively simple, old, metal-poor populations. A combined evaluation of the kinematics and colour-magnitude properties suggests that the previously undiscovered streams are fragments of the Gaia-Enceladus progenitor. The success of this project demonstrates the usefulness of data mining techniques in exploring large datasets." @default.
- W2953437648 created "2019-07-12" @default.
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- W2953437648 date "2019-12-19" @default.
- W2953437648 modified "2023-10-14" @default.
- W2953437648 title "Identifying stellar streams in <i>Gaia</i> DR2 with data mining techniques" @default.
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- W2953437648 doi "https://doi.org/10.1093/mnras/stz3479" @default.
- W2953437648 hasPublicationYear "2019" @default.
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