Local stellar kinematics from RAVE data - I. Local standard of rest

B. Coşkunoǧlu*, S. Ak, S. Bilir, S. Karaali, E. Yaz, G. Gilmore, G. M. Seabroke, O. Bienaymé, J. Bland-Hawthorn, R. Campbell, K. C. Freeman, B. Gibson, E. K. Grebel, U. Munari, J. F. Navarro, Q. A. Parker, A. Siebert, A. Siviero, M. Steinmetz, F. G. Watson & 2 others R. F. G. Wyse, T. Zwitter

*Corresponding author for this work

Research output: Contribution to journalArticle

119 Citations (Scopus)

Abstract

We analyse a sample of 82850 stars from the RAdial Velocity Experiment (RAVE) survey, with well-determined velocities and stellar parameters, to isolate a sample of 18026 high-probability thin-disc dwarfs within 600 pc of the Sun. We derive space motions for these stars, and deduce the solar space velocity with respect to the local standard of rest. The peculiar solar motion we derive is in excellent agreement in radial U and vertical W peculiar motions with other recent determinations. Our derived tangential peculiar velocity, V, agrees with very recent determinations, which favour values near 13kms-1, in disagreement with earlier studies. The derived values are not significantly dependent on the comparison sample chosen, or on the method of analysis. The local Galaxy seems very well dynamically relaxed, in a near symmetric potential.

Original languageEnglish
Pages (from-to)1237-1245
Number of pages9
JournalMonthly Notices of the Royal Astronomical Society
Volume412
Issue number2
DOIs
Publication statusPublished - Apr 2011

Keywords

  • galaxy: kinematics and dynamics
  • solar neighbourhood
  • galaxy: stellar content

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