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Estimation of the tilt of the stellar velocity ellipsoid from RAVE and implications for mass models

Siebert, A; Bienayme, O; Binney, J; Bland-Hawthorn, Joss; Campbell, R; Freeman, Kenneth; Gibson, Bradley K; Gilmore, Gerard; Grebel, E.; Helmi, Amina; Munari, U; Williams, Mary

Description

ABSTRACT We present a measure of the inclination of the velocity ellipsoid at 1 kpc below the Galactic plane using a sample of red clump giants from the RAdial Velocity Experiment (RAVE) Data Release 2. We find that the velocity ellipsoid is tilted towards the Galactic plane with an inclination of. We compare this value to computed inclinations for two mass models of the Milky Way. We find that our measurement is consistent with a short scalelength of the stellar disc (Rd ≃ 2 kpc) if the dark...[Show more]

CollectionsANU Research Publications
Date published: 2008
Type: Journal article
URI: http://hdl.handle.net/1885/36185
Source: Monthly Notices of the Royal Astronomical Society
DOI: 10.1111/j.1365-2966.2008.13912.x

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