SIMBAD references

2017ApJ...844..152L - Astrophys. J., 844, 152-152 (2017/August-1)

Stellar stream candidates in the solar neighborhood found in the LAMOST DR3 and TGAS.

LIANG X.L., ZHAO J.K., OSWALT T.D., CHEN Y.Q., ZHANG L. and ZHAO G.

Abstract (from CDS):

We have cross-matched the LAMOST DR3 with the Gaia DR1 TGAS catalogs and obtained a sample of 166,827 stars with reliable kinematics. A technique based on the wavelet transform was applied to detect significant overdensities in velocity space among five subsamples divided by spatial position. In total, 16 significant overdensities of stars with very similar kinematics were identified. Among these, four are new stream candidates and the rest are previously known groups. Both the U-V velocity and metallicity distributions of the local sample show a clear gap between the Hercules structure and the Hyades-Pleiades structure. The U-V positions of these peaks shift with the spatial position. Following a description of our analysis, we speculate on possible origins of our stream candidates.

Abstract Copyright: © 2017. The American Astronomical Society. All rights reserved.

Journal keyword(s): Galaxy: kinematics and dynamics - Galaxy: kinematics and dynamics

CDS comments: Streams New1-4, gam Leo, eps Ind, Hercules I, Hercules II and Dehnen98 are not in SIMBAD.

Simbad objects: 11

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2019.12.12-17:08:02

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