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. WatsonR. F. G. Wyse, T. Zwitter

*Corresponding author for this work

    Research output: Contribution to journalArticlepeer-review

    124 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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