Kinematically Detected Halo Streams

Abstract

Clues to the origins and evolution of our Galaxy can be found in the kinematics of stars around us. Remnants of accreted satellite galaxies produce over- densities in velocity-space, which can remain coherent for much longer than spatial over-densities. This chapter reviews a number of studies that have hunted for these accretion relics, both in the nearby solar-neighborhood and the more-distant stellar halo. Many observational surveys have driven this field forwards, from early work with the Hipparcos mission, to contemporary surveys like RAVE & SDSS. This active field continues to flourish, providing many new discoveries, and will be revolutionised as the Gaia mission delivers precise proper motions for a billion stars in our Galaxy.

27 pages, 10 figures. Chapter from Springer ASSL Volume entitled "Tidal Streams in the Local Group and Beyond". Affluent readers may wish to purchase the full volume here: http://link.springer.com/book/10.1007/978-3-319-19336-6

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Cited by in corpus (9)

• Streams, substructures and the early history of the Milky Way
• StarGO: A New Method to Identify the Galactic Origins of Halo Stars
• STREAMFINDER II: A possible fanning structure parallel to the GD-1 stream in Pan-STARRS1
• At a Crossroads: Stellar Streams in the South Galactic Cap
• Predictions for the detection of Tidal Streams with Gaia using Great Circle Methods
• Tails from the Orphanage
• Searching for the lost Unicorn: a prominent feature in the radial velocity distribution of stars in Vela from Gaia DR2 data
• Chemical abundances of field halo stars -- Implications for the building blocks of the Milky Way
• The Nephele ecosystem: stars, globular clusters, and stellar streams associated with the progenitor galaxy of $\omega$ Centauri