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Local kinematics and the local standard of rest

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Schönrich, Ralph, Binney, James, Dehnen, Walter·2010·Monthly Notices of the Royal Astronomical Society

Abstract

We re-examine the stellar kinematics of the solar neighbourhood in terms of the velocity υ⊙ of the Sun with respect to the local standard of rest. We show that the classical determination of its component V⊙ in the direction of Galactic rotation via Strömberg's relation is undermined by the metallicity gradient in the disc, which introduces a correlation between the colour of a group of stars and the radial gradients of its properties. Comparing the local stellar kinematics to a chemodynamical model which accounts for these effects, we obtain (U, V, W)⊙= (11.1+0.69−0.75, 12.24+0.47−0.47, 7.25+0.37−0.36) km s−1, with additional systematic uncertainties ∼(1, 2, 0.5) km s−1. In particular, V⊙ is 7 km s−1 larger than previously estimated. The new values of (U, V, W)⊙ are extremely insensitive to the metallicity gradient within the disc.

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Metadata

Authors
Schönrich, R., Binney, J., & Dehnen, W.
Venue
Monthly Notices of the Royal Astronomical Society
Published
2010-04-21
Volume
403
Issue
4
Pages
1829-1833
ISSN
  • 0035-8711 (ISSN-L)
  • 1365-2966
OpenAlex
W2170011509
Cited by
1,909
References
3
FWCI
39.02
Type
journal article
Language
en
Open access
bronze

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CoChat. (2026). Citation check: Local kinematics and the local standard of rest. https://app.cochat.ai/papers/10.1111/j.1365-2966.2010.16253.x
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Schönrich, R., Binney, J., & Dehnen, W. (2010). Local kinematics and the local standard of rest. Monthly Notices of the Royal Astronomical Society. https://doi.org/10.1111/j.1365-2966.2010.16253.x

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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).

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