One Large Blob and Many Streams Frosting the nearby Stellar Halo in Gaia DR2

We explore the phase-space structure of nearby halo stars identified kinematically from the Gaia second data release (DR2). We focus on their distribution in velocity and in "integrals of motion" space, as well as on their photometric properties. Our sample of stars selected to be moving a...

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Veröffentlicht in:	Astrophysical journal. Letters 2018-06, Vol.860 (1), p.L11
Hauptverfasser:	Koppelman, Helmer, Helmi, Amina, Veljanoski, Jovan
Format:	Artikel
Sprache:	eng
Schlagworte:	Clumps Deposition Galaxy: halo Galaxy: kinematics and dynamics Rotating disks solar neighborhood Stars Stellar populations Stellar rotation Substructures Velocity Velocity distribution
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