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

  • Authors: Helmer Koppelman, Amina Helmi, and Jovan Veljanoski

2018 The Astrophysical Journal Letters 860 L11.

  • Provider: AAS Journals

Caption: Figure 1.

Toomre diagram used to identify nearby halo stars (black dots and colored circles), defined as those that satisfy ﹩| {\boldsymbol{V}}-{{\boldsymbol{V}}}_{\mathrm{LSR}}| \gt 210﹩ km s−1, for VLSR = 232 km s−1. The density map shows the distribution of all Gaia DR2 stars within 1 kpc from the Sun. We consider only stars with relatively accurate parallaxes, i.e., with ϖ/ϵϖ > 5.

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