Journal
ASTRONOMY & ASTROPHYSICS
Volume 547, Issue -, Pages -Publisher
EDP SCIENCES S A
DOI: 10.1051/0004-6361/201219462
Keywords
Galaxy: evolution; Galaxy: kinematics and dynamics; Galaxy: fundamental parameters
Categories
Funding
- John von Neumann - Institut fur Computing (NIC) - Germany [2979]
- German Research Foundation [Sonderforschungsbereich SFB 881, SPP 1177, SFB 881]
- Australian Astronomical Observatory
- Leibniz-Institut fuer Astrophysik Potsdam (AIP)
- Australian National University
- Australian Research Council
- French National Research Agency
- European Research Council [ERC-StG 240271 Galactica]
- Istituto Nazionale di Astrofisica at Padova
- Johns Hopkins University
- National Science Foundation of the USA [AST-0908326]
- W. M. Keck foundation
- Macquarie University
- Netherlands Research School for Astronomy
- Natural Sciences and Engineering Research Council of Canada
- Slovenian Research Agency
- Swiss National Science Foundation
- Science & Technology Facilities Council of the UK
- Opticon
- Strasbourg Observatory
- University of Groningen
- University of Heidelberg
- University of Sydney
- Science and Technology Facilities Council [ST/H00260X/1, ST/H00243X/1, ST/J001538/1] Funding Source: researchfish
- UK Space Agency [PP/D006570/1, ST/K00056X/1, ST/I000852/1] Funding Source: researchfish
- STFC [ST/J001538/1, ST/H00260X/1] Funding Source: UKRI
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Aims. We study the Milky Way (MW) thin disk with the RAdial Velocity Experiment (RAVE) survey. We consider the thin and thick disks as different Galactic components and present a technique to statistically disentangle the two populations. Then we focus our attention on the thin disk component. Methods. We disentangle the thin disk component from a mixture of the thin and thick disks using a data set providing radial velocities, proper motions, and photometrically determined distances. Results. We present the trend of the velocity dispersions in the thin disk component of the MW in the radial direction above and below the Galactic plane using data from the RAVE. The selected sample is a limited subsample from the entire RAVE catalogue, roughly mapping up to 500 pc above and below the Galactic plane, a few degrees in azimuthal direction and covering a radial extension of 2.0 kpc around the solar position. The solar motion relative to the local standard of rest is also re-determined with the isolated thin disk component. Major results are the trend of the velocity mean and dispersion in the radial and vertical direction. In addition the azimuthal components of the solar motion relative to the local standard of rest and the velocity dispersion are discussed.
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